CN1555423A

CN1555423A - Aluminum alloy excellent in machinability, and aluminum alloy material and method for production thereof

Info

Publication number: CN1555423A
Application number: CNA028183037A
Authority: CN
Inventors: ˹��ɸ��; 松冈秀明; 山中雅树; 吉冈大贵; 冈本康夫; 北村仁雄
Original assignee: Showa Denko KK
Current assignee: Resonac Holdings Corp
Priority date: 2001-07-25
Filing date: 2002-07-25
Publication date: 2004-12-15
Also published as: JP2009024265A; EP1413636A1; EP1413636B1; JPWO2003010349A1; CA2454509A1; DE60231046D1; EP1413636A4; EP1413636B9; WO2003010349A1; ATE422000T1; JP4227014B2

Abstract

A first aluminum alloy which comprises 0.3 to 6 mass % of Mg, 0.3 to 10 mass % of Si, 0.05 to 1 mass % of Zn, 0.001 to 0.3 mass % of Sr and the balanced amount of Al and impurities; a second aluminum alloy which comprises the elements contained in the first alloy in amounts described above and further comprise one or more selected from among Cu, Fe, Mn, Cr, Zr, Ti, Na and Ca; A third aluminum alloy comprising 0.1 to 6 mass % of Mg, 0.3 to 12.5 mass % of Si, 0.01 mass % or more and less than 1 mass % of Cu, 0.01 to 3 mass % of Zn, 0.001 to 0.5 mass % of Sr and the balanced amount of Al and impurities; and a forth aluminium alloy which comprises the elements contained in the third alloy in amounts described above and further comprises one or more selected from among Ti, B, C, Fe, Cr, Mn, Zr, V, Sc, Ni, Na, Sb, Ca, Sn, Bi, and In.

Description

The aluminium alloy of excellent in machinability and aluminium alloy material and manufacture method thereof

The application advocates that the Japanese patent application laid that proposes July 25 calendar year 2001 is willing to that the Japanese patent application laid of the U.S. Patent application proposition on May 22nd, 60/311, No. 363 1 that 2001-224661 number, August 13 calendar year 2001 propose is willing to the application of 2001-148340 number right of priority, disclosed content in above-mentioned application, former state constitutes the application's a part.

Technical field

The present invention relates to aluminium alloy and the aluminium alloy material and the manufacture method thereof of the excellent in machinability of Al-Mg-Si system.

Background technology

Can see such problem in the prior art: in the machining of aluminium alloy material, smear metal is continuous, and goods bight and boring add the operation of the burr that generates around the drill bit bore in man-hour in the time of the operation of smear metal processing must being arranged and remove turning.

In order to address these problems, having proposed by adding with Pb, Bi, Sn is the low melting point element of representative, the cuttability of raising smear metal, and machinability is good and can suppress the free-cutting machinability aluminium alloy that burr generates.

But these low melting point elements are many in the situation of grain boundary segregation, for example, when implementing high-rate cutting, because of the heating in the processing can cause partial melting, become the reason that crackle takes place.In addition, from the viewpoint of global environment protection, making and using the free-cutting machinability aluminium alloy material that contains harmful elements Pb is CR Critical problem, and also existence makes the difficult point of the recirculation reduction of aluminum products.

For this reason, as the replacement element of above-mentioned low melting point element, developed the free-cutting machinability aluminium alloy that adds Si, Cu.

For example, open in the flat 11-12705 communique the spy, the forging aluminium alloy of the Si that has added 3～11 quality % is disclosed, open in the flat 9-249931 communique the spy, the highly corrosion resistant aluminium alloy of the Si that has added 1.5～12.0 quality % is disclosed, open in the flat 2-97638 communique the spy, disclose the contact with tape parts aluminium alloy of the Cu of the Si that added 2.0～12.5 quality % and 1.0～6.5 quality %.These aluminium alloy materials are dispersed in the matrix of aluminium the Si particle of hard, and pulverizing or peeling off of Si particle and basal body interface by the Si particle during cutting are segmented smear metal.These aluminium alloy materials do not contain low melting point metal, thereby recirculation is good, and solidity to corrosion and thermotolerance are also good.

In addition, these aluminium alloy materials by the extrusion blank that is cast as regulation and forms after, in 400～600 ℃ scope, implement homogenizing and handle, under 350～550 ℃, carry out extrusion processing, quench at the overflow mould exit end, or cut into enforcement solution treatment behind the long size material of 1～5m and make.

But, in above-mentioned existing free-cutting machinability aluminium alloy, the problem that exists is, surpass in 5% the alloy composition at the Si addition, because the Si particle disperses in a large number, thereby the Si particle with acute angle part destroys the point of a knife of cutting tool, and the wearing and tearing of instrument increase sharply, and hang down life-spanization because of damage makes instrument.In addition, also there is the problem of solidity to corrosion difference in the aluminium alloy that the Cu addition is many.

In addition, following characteristic is arranged in above-mentioned manufacturing process: during cast blank, the Si particle also has becomes 1 μ m or the following situation of 1 μ m, and surpasses the size of 1 μ m by the thermal treatment president great achievement more than 300 ℃ or 300 ℃ thereafter.Thereby, such problem will appear: through homogenizing processing, extrusion processing, quench at the overflow mould exit end, during each operation of solution treatment, the Si particle is grown up, finally become the scope of 5～10 μ m, in the process alloy material of above-mentioned a series of operation, its machinability ratio casting material more reduces, and the wearing and tearing of cutting tool and damage are significantly.Specifically, when existing median size to surpass the big Si particle of 5 μ m in the aluminum substrate, the wearing and tearing of cutting tool or be called as turned instrument damage and increase sharply.And, because of these instrument damages, the degradation on the machining surface in the long-time continuous machining.In addition, if when the aluminium alloy material that has thick like this Si particle implemented surface passivation and handles, because the Si particle that exposes on the surface is different with the formation speed of surface passivation epithelium in the aluminum substrate, so also there is the problem of membrane thickness unevenness.

Disclosure of an invention

In view of above-mentioned technical background, the objective of the invention is to, a kind of excellent machinability that has is provided, can suppress the wearing and tearing of cutting tool and turned etc. damage simultaneously, also have aluminium alloy, aluminium alloy material and manufacture method thereof that good surface passivation is handled property.

The present invention is made of following content: roughly divide into 4 kinds aluminium alloy, have the manufacture method of aluminium alloy material and these aluminium alloy materials of the metal structure corresponding with each chemical constitution according to chemical constitution.

The bare bones of the 1st kind of aluminium alloy is, contains Mg:0.3～6 quality %, Si:0.3～10 quality %, Zn:0.05～1 quality % and Sr:0.001～0.3 quality %, all the other are made up of Al and impurity.

In above-mentioned the 1st kind of aluminium alloy, preferred Mg content is 0.5～1.1 quality %.Preferred Si content is 1.5～5 quality %.Preferred Zn content is 0.1～0.3 quality %.Preferred Sr content is 0.005～0.05 quality %.

The bare bones of the 2nd kind of aluminium alloy is, contain Mg:0.3～6 quality %, Si:0.3～10 quality %, Zn:0.05～1 quality % and Sr:0.001～0.3 quality %, in addition, contain from Cu:0.01 quality % or more than the 0.01 quality % and less than 1 quality % as the interpolation element of selecting, Fe:0.01～1 quality %, Mn:0.01～1 quality %, Cr:0.01～1 quality %, Zr:0.01～1 quality %, Ti:0.01～1 quality %, Na:0.001～0.5 quality %, select among Ca:0.001～0.5 quality % more than a kind or a kind, all the other are made up of Al and impurity.

In above-mentioned the 2nd kind of aluminium alloy, preferred Mg content is 0.5～1.1 quality %.Preferred Si content is 1.5～5 quality %.Preferred Zn content is 0.1～0.3 quality %.Preferred Sr content is 0.005～0.05 quality %.

In addition, in above-mentioned the 2nd kind of aluminium alloy, the preferred interpolation element of selecting is Cu.The preferred interpolation element of selecting is Fe.The preferred interpolation element of selecting be among Cr, the Mn more than a kind or a kind.The preferred interpolation element of selecting is Zr.The preferred interpolation element of selecting is Ti.The preferred interpolation element of selecting be among Na, the Ca more than a kind or a kind.

In addition, in above-mentioned the 2nd kind of aluminium alloy, the content of preferred Cu is 0.1～0.3 quality %.The content of preferred Fe is 0.1～0.3 quality %.The content of preferred Mn is 0.1～0.3 quality %.The content of preferred Cr is 0.1～0.3 quality %.The content of preferred Zr is 0.1～0.3 quality %.The content of preferred Ti is 0.1～0.3 quality %.The content of preferred Na is 0.005～0.3 quality %.The content of preferred Ca is 0.005～0.3wt.

The bare bones of a kind of aluminium alloy material of the present invention is, on chemical constitution, by the 1st with the 2nd kind of aluminium alloy, be that any aluminium alloy of 1～24 of claim the is formed; On alloy structure, the median size of Si particle is 1～5 μ m, and the average line of apsides ratio of Si particle is 1～3 simultaneously.

In above-mentioned aluminium alloy material, the median size of preferred above-mentioned Si particle is 3 μ m or below the 3 μ m.The average line of apsides ratio of preferred above-mentioned Si particle is below 2 or 2.

The bare bones of the manufacture method of a kind of aluminium alloy material of the present invention is, make by the 1st and the 2nd kind of aluminium alloy with the casting speed of 10～180mm/min, it is the blank of any aluminium alloy formation of 1～24 of claim the, above-mentioned blank is kept down carrying out more than 6 hours or 6 hours after homogenizing handles at 400～570 ℃, 300～550 ℃ of blank temperature, extruded product speed 0.5～100m/min, be squeezed into the shape of wanting under the condition of extrusion ratio 10～200, this squeeze wood is kept carrying out more than 1 hour or 1 hour solution treatment down at 400～570 ℃, keep carrying out in 1～30 hour ageing treatment down at 90～300 ℃ again.

In the manufacture method of above-mentioned aluminium alloy material, preferred above-mentioned casting speed is 30～130mm/min.Preferred above-mentioned homogenizing is handled at 500～545 ℃ and is kept down more than 10 hours or 10 hours and carry out.Carry out under the preferred above-mentioned condition that is squeezed in 350～500 ℃ of blank temperature, extruded product speed 2～30m/min, extrusion ratio 20～85.Preferred above-mentioned solution treatment keeps down more than 3 hours or 3 hours and carries out at 500～545 ℃.Preferred above-mentioned ageing treatment kept 3～20 hours under 140～200 ℃ and carries out.Preferably carry out the drawing of the shape of being wanted for the squeeze wood after the above-mentioned solution treatment with 5～30% relative reduction in area, carry out above-mentioned ageing treatment then, the relative reduction in area of preferred especially drawing is 10～20%.

The bare bones of the 3rd kind of aluminium alloy is, it is above less than 1 quality %, Zn:0.01～3 quality % and Sr:0.001～0.5 quality % to contain Mg:0.1～6 quality %, Si:0.3～12.5 quality %, Cu:0.01 quality % or 0.01 quality %, and all the other are made up of Al and impurity.

In above-mentioned the 3rd kind of aluminium alloy, preferred Mg content is 0.3～5 quality %.Preferred Si content is 0.8～12 quality %.Preferred Cu content is 0.1～0.8 quality %.Preferred Zn content is 0.05～1.5 quality %.Preferred Sr content is 0.005～0.3 quality %.

The bare bones of the 4th kind of aluminium alloy is, contain Mg:0.1～6 quality %, Si:0.3～12.5 quality %, Cu:0.01 quality % or 0.01 quality % are above less than 1 quality %, Zn:0.01～3 quality % and Sr:0.001～0.5 quality %, in addition, contain from Ti:0.001～1 quality % as the interpolation element of selecting, B:0.0001～0.03 quality %, C:0.0001～0.5 quality %, Fe:0.01～1 quality %, Cr:0.01～1 quality %, Mn:0.01～1 quality %, Zr:0.01～1 quality %, V:0.01～1 quality %, Sc:0.0001～0.5 quality %, Ni:0.005～1 quality %, Na:0.001～0.5 quality %, Sb:0.001～0.5 quality %, Ca:0.001～0.5 quality %, Sn:0.01～1 quality %, Bi:0.01～1 quality %, select among In:0.001～0.5 quality % more than a kind or a kind, all the other are made up of Al and impurity.

In above-mentioned the 4th kind of aluminium alloy, preferred Mg content is 0.3～5 quality %.Preferred Si content is 0.8～12 quality %.Preferred Cu content is 0.1～0.8 quality %.Preferred Zn content is 0.05～1.5 quality %.Preferred Sr content is 0.005～0.03 quality %.

In addition, in above-mentioned the 4th kind of aluminium alloy, the preferred interpolation element of selecting be among Ti, B, C, the Sc more than a kind or a kind.The preferred interpolation element of selecting is Fe.The preferred interpolation element of selecting be among Cr, the Mn more than a kind or a kind.The preferred interpolation element of selecting be among Zr, the V more than a kind or a kind.The preferred interpolation element of selecting is Ni.The preferred interpolation element of selecting be among Na, Sb, the Ca more than a kind or a kind.The preferred interpolation element of selecting be among Sn, Bi, the In more than a kind or a kind.

In addition, in above-mentioned the 4th kind of aluminium alloy, the content of preferred Ti is 0.003～0.5 quality %.The content of preferred B is 0.0005～0.01 quality %.The content of preferred C is 0.001～0.3 quality %.The content of preferred Fe is 0.05～0.7 quality %.The content of preferred Cr is 0.03～0.7 quality %.The content of preferred Mn is 0.03～0.7 quality %.The content of preferred Zr is 0.03～0.7 quality %.The content of preferred V is 0.03～0.7 quality %.

The content of preferred Sc is 0.01～0.3 quality %.The content of preferred Ni is 0.03～0.7 quality %.The content of preferred Na is 0.005～0.3 quality %.The content of preferred Sb is 0.005～0.3 quality %.The content of preferred Ca is 0.005～0.3 quality %.The content of preferred Sn is 0.05～0.5 quality %.

The content of preferred Bi is 0.05～0.5 quality %.The content of preferred In is 0.01～0.3 quality %.

The bare bones of another kind of aluminium alloy material of the present invention is, on chemical constitution, by the 3rd with the 4th kind of aluminium alloy, be that any aluminium alloys of 36～70 of claims the is formed; On metal structure, average dendritic arm spacing is 1～200 μ m, on the border of dendritic crystal, contain second particle mutually of the eutectic Si particle of median size 0.01～5 μ m and other, the average skeleton line length (Lm) of its length direction is that 0.5 μ m or 0.5 μ m are above, width average (Wm) is 0.5 μ m or the above eutectic lamellar structure of 0.5 μ m forms netted.

Preferably in above-mentioned aluminium alloy material, the above-mentioned eutectic Si particle in the above-mentioned eutectic lamellar structure and other second mutually particle add up to 500/mm ²Or 500/mm ²More than, and the area ratio/occupancy ratio of these particles is 0.1～50%.Preferred above-mentioned average dendritic arm spacing is 3～100 μ m.The median size of preferred above-mentioned eutectic Si particle is 0.1～3 μ m.The average skeleton line length (Lm) of preferred above-mentioned eutectic lamellar structure is that 3 μ m or 3 μ m are above, width average (Wm) is 1 μ m or more than the 1 μ m.The average specific (L/Wm) of the skeleton line length of preferred above-mentioned eutectic lamellar structure and width is more than 3 or 3.

In addition, second of preferred above-mentioned eutectic Si particle and other mutually particle add up to 1000/mm ²Or 1000/mm ²More than.Preferred above-mentioned eutectic Si particle and other second mutually the area ratio/occupancy ratio of particle be 0.3～40%.

The bare bones of the manufacture method of another kind of aluminium alloy material of the present invention is, to make the 3rd and the 4th kind of aluminium alloy, be that each described aluminium alloys of 36～70 of claims the remains on solidus temperature or the molten metal more than the solidus temperature, the casting speed of dividing with 30～5000mm/, 10～600 ℃/second speed of cooling are continuously cast into the section bar of required section form, keep implementing in 0.5～100 hour ageing treatment down at 100～300 ℃ then.

In the manufacture method of above-mentioned aluminium alloy material, preferred above-mentioned casting speed is 100～2000mm/ branch.Preferred above-mentioned speed of cooling is 30～300 ℃/second.Preferred above-mentioned ageing treatment kept 1～30 hour under 120～220 ℃ and carries out.Preferred above-mentioned section bar is the solid shape material.Preferred above-mentioned section bar is external with the circle of diameter 10～150mm on section.Preferably for the section bar after the above-mentioned continuous casting, remove the part of skin depth 0.1～10mm, the amount of removing on preferred especially above-mentioned top layer is the degree of depth 0.2～5.0.

In addition, for the section bar after the continuous casting, preferably under the temperature below 400 ℃ or 400 ℃, the post forming that carries out relative reduction in area and be 30% or 30% below is processed.In addition, preferred above-mentioned processing temperature is below 250 ℃ or 250 ℃.Preferred above-mentioned relative reduction in area is below 20% or 20%.

In the following description, 4 kinds of aluminium alloys of the 1st～the 4th are divided into the 1st and the 2nd aluminium alloy that has necessary element M g, Si, Zn, Sr jointly and have the 3rd and the 4th aluminium alloy of necessary element M g, Si, Cu, Zn, Sr jointly and be described in detail.In addition, forming in the corresponding aluminium alloy material and manufacture method thereof, each aluminium alloy is formed proceeded explanation with these.

I. the 1st and the 2nd kind of aluminium alloy and alloy material and manufacture method (1～35 of claim the) thereof

The 1st and the 2nd kind of aluminium alloy and alloy material with these chemical constitutions, one side can be guaranteed good machinability by the smear metal cuttability based on the Si particle, and one side can suppress the wearing and tearing and the damage of instrument by making balling of Si particle and miniaturization.In addition, except by main precipitate Mg ₂Outside the reinforcement that Si produces, by the Si particle of surplus, the existing alloy of its strength ratio also significantly improves.

Below be described in detail the interpolation meaning of each element in aluminium alloy and alloy material and the qualification reason of content.

In the composition of above-mentioned aluminium alloy, these 4 kinds of elements of Mg, Si, Zn and Sr are must element.The 1st kind of aluminium alloy of the present invention (1～5 of claim the) is made up of for Al and impurity these 4 kinds of elements and all the other.

The Mg solid solution combines with the Si of surplus etc. simultaneously, as Mg in alloy substrate ₂The precipitate of Si etc. is dispersed in the matrix, and mechanical characteristics, particularly yield strength are improved, and by the synergy of solid solution type element with other machinability of alloy is improved.Mg content is when less than 0.3 quality %, and above-mentioned effect deficiency on the other hand, when surpassing 6.0 quality %, can promote the oxidation of alloy liquation, and also variation of plastic working, thereby is taken as 0.3～6 quality %.Preferred Mg content is 0.5～1.1 quality %.

The solid solution capacity of Si in Al is few, thereby except for forming the amount that compound needs, and is dispersed in the matrix as the monomer particle of Si.In Si particle dispersive alloy structure, owing to the pulverizing of the Si particle that is produced by cutting tool or the interface peel of Si particle and Al parent phase, smear metal can promptly be cut off, and machinability is improved.In addition,, make Si particle balling miniaturization simultaneously, also will improve machinability thus by the Sr that adds as necessary element or the Na, the Ca that add arbitrarily.Si content improves the effect deficiency of smear metal cuttability when less than 0.3 quality %, on the other hand, when surpassing 10 quality %, though the smear metal cuttability improves, because the cutting tool wearing and tearing significantly, productivity reduces, so be necessary to get 0.3～10 quality %.By such viewpoint, preferred Si content is 1.5～5 quality %.

The Zn solid solution combines with Mg, as MgZn in alloy substrate simultaneously ₂Deng precipitate be dispersed in the matrix.Therefore, can improve the mechanical characteristics of aluminium alloy, improve the machinability of alloy by the synergy of solid solution type element with other.Zn content is when less than 0.05 quality %, and above-mentioned effect deficiency on the other hand, when surpassing 1 quality %, be I'm afraid that solidity to corrosion can reduce, thereby is necessary to be taken as 0.05～1 quality %.In addition,, have and improve the effect that the formation speed of epithelium is handled in surface passivation, suitable being used in to improve the goods that wear resistance etc. is handled as the surface passivation of purpose if in above-mentioned scope.Preferred Zn content is 0.1～0.3 quality %.

Sr can make eutectic Si, primary crystal Si balling when solidifying by coexisting with Si, miniaturization simultaneously.Therefore, make the smear metal cuttability well improve machinability indirectly, the wearing and tearing of inhibition cutting tool and the effect of damage are arranged simultaneously.In addition, the Si particle evenly and is imperceptibly disperseed, the effect of further raising machinability is arranged.Sr content when less than 0.001 quality %, above-mentioned effect deficiency, in addition, when the Si particle is not generated acute angle part by balling, the wearing and tearing of cutting tool are remarkable, on the other hand, and when surpassing 0.3 quality %, above-mentioned effect is saturated, loses the meaning that volume is added, thereby gets 0.001～0.3 quality %.Preferred Sr content is 0.005～0.05 quality %.

The 2nd kind of aluminium alloy of the present invention (6～24 of claims the) with all characteristics of further raising alloy as purpose, to contain above-mentioned aluminium alloy that must 4 kinds of elements as essentially consist, also to have added the element more than 2 kinds or 2 kinds of any one or the arbitrary combination from 8 kinds of elements of Cu, Fe, Mn, Cr, Zr, Ti, Na, Ca, selected.

The Cu solid solution combines with Al, as CuAl in alloy substrate simultaneously ₂Deng precipitate be dispersed in the matrix.Therefore, the mechanical characteristics of aluminium alloy is improved, improve the machinability of alloy by the synergy of solid solution type element with other.Cu content when less than 0.01 quality %, above-mentioned effect deficiency, on the other hand, when 1 quality % or 1 quality % were above, probably solidity to corrosion can reduce, thereby was preferably 0.01 quality % or 0.01 quality % is above, less than 1 quality %.Preferred especially Cu content is 0.1～0.3 quality %.

Fe is the element that is contained inevitably in aluminium alloy.But, if its content is in the scope of 0.01～1 quality %, owing to be the amount that the quality bills of materials with common aluminium alloy contains, so the operation especially of seeking to reduce Fe needn't be arranged.In addition, because as long as just the binding capacity with Si is few in above-mentioned scope, so Si is dispersed into the resultful Si of smear metal cuttability as independent particle, thus excellent smear metal cuttability can be kept.If Fe content is reduced to less than 0.01 quality %, then cost increases, if surpass 1 quality %, then the compound with Si increases, and the independent particle of Si reduces, and the smear metal cuttability will reduce.Preferred especially Fe content is 0.1～0.3 quality %.

Mn and Cr are in order to improve physical strength by suppressing to recrystallize in aluminium alloy, to improve solidity to corrosion simultaneously and be added.Mn content and Cr content are when less than 0.01 quality %, the effect deficiency that inhibition recrystallizes, can not expect mechanical property and corrosion proof raising, in addition, reason recrystallizes the formation of the coarse grain that causes, and makes the smear metal cuttability instability on the section direction, on the other hand, when surpassing 1 quality %, the thermal distortion resistance during extruding rises and productivity is reduced, thereby is preferably 0.01～1 quality %.In addition, because as long as just the binding capacity with Si is few in this scope respectively for Mn content and Cr content, so Si is dispersed into the resultful Si of smear metal cuttability as independent particle, thus excellent smear metal cuttability can be kept.When Mn content and Cr content surpassed 1 quality %, with the compound increase of Si, the independent particle of Si reduced, and the smear metal cuttability will reduce.Preferred especially Mn content and Cr content are respectively 0.1～0.3 quality %.

Zr in order to improve physical strength by the generation of the coarse grain that suppresses to be caused by recrystallize, improves solidity to corrosion simultaneously and is added in aluminium alloy.In addition, by and Al between form intermetallic compound, and be dispersed in the matrix and improve machinability.Zr content is when less than 0.01 quality %, and the effect deficiency that inhibition recrystallizes can not be expected mechanical property and corrosion proof raising, in addition, because of forming by recrystallizing the coarse grain that causes, the smear metal cuttability instability on the section direction, and also it is also not enough to improve the effect of machinability.On the other hand, when surpassing 1 quality %, extruding property or castibility significantly reduce, thereby are preferably 0.01～1 quality %.By such viewpoint, preferred especially Zr content is 0.1～0.3 quality %.

Ti and Zr improve physical strength for the generation by the coarse grain that suppresses to be caused by recrystallize in aluminium alloy equally, improve solidity to corrosion simultaneously and are added.Ti content is when less than 0.01 quality %, the effect deficiency that inhibition recrystallizes, can not expect mechanical property and corrosion proof raising, in addition, because of forming by recrystallizing the coarse grain that causes, the smear metal cuttability instability on the section direction, on the other hand, if surpass 1 quality %, extruding property or castibility significantly reduce, thereby are preferably 0.01～1 quality %.By such viewpoint, preferred especially Ti content is 0.1～0.3 quality %.

Na and Ca and above-mentioned Sr are in order to seek the balling of Si particle equally, make its homodisperse simultaneously and the element that adds.Na content when less than 0.001 quality %, above-mentioned effect deficiency, even surpass 0.5 quality %, effect is also saturated, thereby is preferably 0.001～0.5 quality %.In addition, Ca content when less than 0.001 quality %, above-mentioned effect deficiency, even surpass 0.5 quality %, effect is also saturated, thereby is preferably 0.001～0.5 quality %.Preferred especially Na content is 0.005～0.3 quality %, and preferred especially Ca content is 0.005～0.3 quality %.

In addition, in aluminium alloy of the present invention and alloy material, owing to balling and uniformly dispersed effective Sr to the independent particle of Si are as containing by composition, so the interpolation of Na and Ca is arbitrarily, even do not add them, also can guarantee the balling of Si particle and uniformly dispersed.

Above-mentioned optional 8 kinds of elements as long as add a kind or more than 2 kinds or 2 kinds of arbitrary combination at least in 4 kinds of necessary elements, just can access corresponding effects.The aluminium alloy that claim the is 11～16 is exactly an aluminium alloy of having selected to add element in order to obtain desired effect.In addition, add the occasion more than 2 kinds or 2 kinds, what more preferably that effect is different elements was selected combines.For example, can be divided into following each group element: pass through CuAl ₂Deng precipitate and improve the A group element (Cu) of mechanical characteristics, make the independent particle of Si conduct and dispersive B group element (Fe), by suppressing to recrystallize the C group element (Cr that improves physical strength, Mn), generation by the coarse grain that suppresses to be caused by recrystallize improves physical strength, simultaneously to improving the resultful D group element of solidity to corrosion (Ti), generation by the coarse grain that suppresses to be caused by recrystallize improves physical strength, produce effect to improving solidity to corrosion simultaneously, also by forming the E group element (Zr) that intermetallic compound improves machinability, to balling of Si particle and the resultful F group element of miniaturization (Na, Ca).And, for must element, can arbitrary combination 1 group or 1 group above and add.In addition, in by a plurality of elementary composition groups, can in group, at random select more than a kind or a kind.In addition, select the occasion of interpolation element arbitrarily with the group unit, the content of each element also is taken as within the above-mentioned scope.

The aluminium alloy material that claim the is 25～27 is defined as above-mentioned scope (1～24 of claim the) afterwards in the chemical constitution with alloy, has stipulated the median size and the average line of apsides ratio of Si particle on alloy structure.

The Si particle becomes the starting point of the smear metal cut-out when cutting and machinability is improved, but in order to suppress the wearing and tearing of instrument, requiring it is fine and globular, and median size is taken as 1～5 μ m, and average line of apsides ratio is taken as 1～3.The Si particle has that Si content is many more, median size, the average line of apsides be than also big more tendency, even median size surpasses 5 μ m, also can obtain good machinability, but the average line of apsides is when becoming big, and the wearing and tearing of instrument increase sharply.Therefore, in the present invention,, the median size and the average line of apsides ratio of Si particle is defined in the above-mentioned scope in order to realize good machinability and to suppress this two aspect of tool wear.From can obtaining the viewpoint that excellent machinability can suppress the wearing and tearing of instrument simultaneously, the median size of preferred Si particle is 3 μ m or below the 3 μ m, preferred average line of apsides ratio is below 2 or 2.

The method manufacturing of 28～35 of claims the of above-mentioned aluminium alloy material.That is, by using the alloy of regulation chemical constitution, regulation until extruding or the processing conditions and the heat-treat condition of carrying out drawing again, just can be made micro situation and by the equally distributed alloy material of the Si particle of balling from the casting of blank.

Casting speed with 10～180mm/min is made blank.Therebetween, the Si-Sr compound in the molten metal becomes nuclear, and the primary crystal Si and the eutectic Si of balling are dispersed among the Al, by thermal treatment and extrusion processing or drawing processing thereafter, the Si particle that can have been carried out balling imperceptibly.In addition, because of the spot segregation of crystal boundary also less, can be in section uniform distribution, so can obtain stable smear metal cuttability.Casting speed is when not enough 10mm/min, and Si thickization of particle and particle distribution are thinning dredges, thereby can not obtain stable smear metal cuttability.On the other hand, when faster than 180mm/min, casting billet surface variation or solidification cracking occurs probably.Preferred casting speed is 30～130mm/min.

Handle by the homogenizing that keeps down carrying out blank more than 6 hours or 6 hours at 400～570 ℃.Owing to handle by such homogenizing, can make that Si is particle-stabilised to grow up, and make other solid solution type element solid solution, so do not have spot segregation on the border of dendritic crystal or crystal boundary, machinability, mechanical features, the solidity to corrosion of the final alloy material that forms are good.The condition that homogenizing is handled is in 400 ℃ of less thaies or less than in the time of 6 hours, and the Si particle can not be stablized and grows up, and in addition, solid solution type element can not spread in Al, solid solution.Therefore, the solidity to corrosion of segregation portion reduces, and can not obtain stable smear metal cuttability in addition.On the other hand, when surpassing 570 ℃,, cause mechanical characteristics to reduce because the eutectic fusion of Al and other each element forms the space in alloy structure.Preferred homogenizing treatment condition are to keep more than 10 hours or 10 hours down at 500～545 ℃.

In the blank temperature is that 300～550 ℃, extruded product speed are that 0.5～100m/min, extrusion ratio are to push under 10～200 the condition.By pushing in this scope, the Si particle spot segregation does not take place is not evenly dispersed on the crystal boundary, does not damage machinability, mechanical characteristics, the solidity to corrosion of the alloy material that finally obtains.In addition, productivity is also good.The blank temperature is when 300 ℃ of less thaies, and extrusion speed reduces, the productivity variation.Extruded product speed is in the occasion of not enough 0.5m/min, and productivity is variation also.In addition, extrusion ratio when less than 10 since Si dispersion of particles state can not homogenizing, on the border of former dendroid crystalline substance spot segregation takes place, so machinability is stable not good enough, and mechanical characteristics, solidity to corrosion reduction.On the other hand, the blank temperature is above 550 ℃ or extruded product speed surpasses 100m/min or extrusion ratio surpasses at 200 o'clock, can produce squeeze crack or adhesion etc. on the surface of squeeze wood, and surface quality descends.Preferred blank temperature is 350～500 ℃, and preferred extruded product speed is that 2～30m/min, preferred extrusion ratio are 20～85.

By the solution treatment after 400～570 ℃ maintenance is pushed more than 1 hour or 1 hour down.By such solution treatment, make the balling of Si particle, can obtain stable smear metal cuttability, it is few at the spot segregation of crystal boundary to add element simultaneously, can obtain high mechanical characteristics and solidity to corrosion.If in the time of 1 hour, intensity is just not enough, smear metal cuttability variation in 400 ℃ of less thaies or less than for the solution treatment condition.On the other hand, surpassing under 570 ℃ the high temperature, at crystal boundary partial melting can take place, mechanical characteristics significantly reduces.Thereby preferred solution treatment condition is to keep more than 3 hours or 3 hours down at 500～545 ℃.

Ageing treatment is to keep 1～30 hour down at 90～300 ℃.Around here, the alloy material becomes maximum intensity, can obtain the excellent chip cuttability.Aging temp in the time of 1 hour, becomes inferior timeliness state in less than in 90 ℃ of less thaies or hold-time, the roughness of machining surfaceization during cutting, and mechanical characteristics also reduces simultaneously.In addition, when surpassing 300 ℃ or 30 hours, the effect that obsolesces state, smear metal cuttability and mechanical characteristics reduce.Thereby preferred aging condition is to keep 3～20 hours down at 140～200 ℃.

In addition, for the squeeze wood after the above-mentioned solution treatment, more preferably carry out the drawing of the shape of being wanted with 5～30% relative reduction in area.By this drawing, can obtain the shape of wanting, the recrystallized structure miniaturization on the surface that forms in the time of can making extruding simultaneously improves mechanical characteristics.In addition, can obtain high dimensional accuracy in the longitudinal direction.The relative reduction in area of drawing is when less than 5%, and above-mentioned effect deficiency on the other hand, surpasses at 30% o'clock, when I'm afraid drawing tension fracture can take place, thereby preferred relative reduction in area is 10～20%.

Creating conditions of other carried out according to common method.

II. the 3rd and the 4th kind of aluminium alloy and alloy material and manufacture method (36～89 of claims the) thereof

The 3rd and the 4th kind of aluminium alloy and alloy material with these chemical constitutions, based on by deciding the Si particle that chemical constitution obtains and stipulated its machinability, make it further reliable by the regulation metal structure again, and can suppress the aluminium alloy of the wearing and tearing and the damage of cutting tool by the particle diameter of control Si particle.

In the composition of above-mentioned aluminium alloy, 5 kinds of elements of Mg, Si, Cu, Zn and Sr are must element.The 3rd kind of aluminium alloy of the present invention (36～41 of claims the) is made of for Al and impurity these 5 kinds of elements and all the other.

The Mg solid solution combines with Si etc. simultaneously, as Mg in alloy substrate ₂The precipitate of Si etc. is dispersed in the matrix, and mechanical characteristics, particularly yield strength are improved, and further improves the machinability of alloy by the synergy of solid solution type element with other.Mg content is when less than 0.1 quality %, and above-mentioned effect deficiency on the other hand, when surpassing 6 quality %, can promote the oxidation of alloy liquation, and also variation of plastic working, thereby is taken as 0.1～6 quality %.Preferred Mg content is 0.3～5 quality %.

The solid solution capacity of Si in Al is few, thereby except for forming the amount that compound needs, and is dispersed in the aluminum substrate as the monomer particle of Si.The eutectic Si particle that is particularly solidified by the quick cooling in when continuous casting of the present invention and form becomes 5 μ m or the minuteness particle below the 5 μ m, on the border of dendritic crystal with other second mutually particle form the eutectic lamellar structure together.During cutting, owing to separation, the pulverizing of eutectic Si particle or the interface peel of eutectic Si particle and Al parent phase of the eutectic lamellar structure that takes place to be caused by cutting tool, smear metal can promptly be cut off, so machinability significantly improves.In addition,, make Si particle balling miniaturization simultaneously, also can improve machinability by the Sr that adds as necessary element or Na, the Sb, the Ca that add arbitrarily.Si content is when less than 0.3 quality %, improve the smear metal cuttability, promptly improve the effect deficiency of machinability, on the other hand, when surpassing 12.5 quality %, though machinability improves, owing to form thick eutectic Si particle in a large number, the damage of wearing and tearing and turned etc. cutting tool is remarkable, productivity reduces, so be necessary to get 0.3～12.5 quality %.From such viewpoint, preferred Si content is 0.8～12 quality %.Be more preferably 1.2～8.5 quality %.

The Cu solid solution combines with Al, as CuAl in alloy substrate simultaneously ₂Deng precipitate be dispersed in the matrix.Therefore, the mechanical characteristics of aluminium alloy is improved, by improving the machinability of alloy with the synergy of solid solution type element than other.In addition, CuAl ₂Also be present in the eutectic lamellar structure, separating of the eutectic lamellar structure during also with cutting is closely related, and machinability is improved.Cu content when less than 0.01 quality %, above-mentioned effect deficiency, on the other hand, when 1 quality % or 1 quality % were above, probably solidity to corrosion can reduce, thereby was taken as 0.01 quality % or 0.01 quality % is above, less than 1 quality %.Preferred Cu content is 0.1～0.8 quality %.

The Zn solid solution combines with Mg, as MgZn in alloy substrate simultaneously ₂Deng precipitate be dispersed in the matrix.Therefore, the mechanical characteristics of aluminium alloy is improved, improve the machinability of alloy by the synergy of solid solution type element with other.Zn content is when less than 0.01 quality %, and above-mentioned effect deficiency on the other hand, when surpassing 3 quality %, be I'm afraid that solidity to corrosion can reduce, thereby is necessary to be taken as 0.01～3 quality %.In addition,, have and improve the effect that the formation speed of epithelium is handled in surface passivation, suitable being used in to improve wear resistance and the goods of handling as the surface passivation of purpose such as ornamental if in above-mentioned scope.Preferred Zn content is 0.05～1.5 quality %.

Sr makes eutectic Si, primary crystal Si balling when solidifying by coexisting with Si, makes its miniaturization simultaneously.Therefore, make cuttability well improve machinability indirectly, the wearing and tearing of inhibition cutting tool and the effect of turned equivalent damage are arranged simultaneously.In addition, in continuous casting and operations such as post forming processing thereafter, make the even and fine dispersion of Si particle, the effect of further raising machinability is arranged.Sr content when less than 0.001 quality %, above-mentioned effect deficiency, in addition, owing to the Si particle is not produced acute angle part by balling, the wearing and tearing of cutting tool and turned etc. damage are remarkable.On the other hand, when surpassing 0.5 quality %, above-mentioned effect is saturated, loses the meaning that volume is added, thereby preferred Sr content is 0.005～0.3 quality %.

The 4th kind of aluminium alloy of the present invention (42～70 of claims the) is that all characteristics with further raising alloy are as purpose, to contain above-mentioned aluminium alloy that must 5 kinds of elements as essentially consist, also to have added the element more than 2 kinds or 2 kinds of any one or the arbitrary combination from 16 kinds of elements of Ti, B, C, Fe, Cr, Mn, Zr, V, Sc, Ni, Na, Sb, Ca, Sn, Bi, In, selected.

Ti makes the ingot structure miniaturization, the appearance and the solidification cracking of the macroscopical decorative pattern that generates on the face of tool during with thickization of inhibition ingot structure.Ti content is when less than 0.001 quality %, and the effect deficiency of ingot casting miniaturization in addition, when surpassing 1 quality %, probably can form thick Ti-Al based compound, the castibility of aluminium alloy and ductility is reduced, thereby be preferably 0.001～1 quality %.Preferred especially Ti content is 0.003～0.5 quality %.

B and Ti make the ingot structure miniaturization equally, the appearance and the solidification cracking of the macroscopical decorative pattern that generates on the face of tool during with thickization of inhibition ingot structure.B content is when less than 0.0001 quality %, and the effect deficiency of ingot casting miniaturization in addition, when surpassing 0.03 quality %, forms hard particles, the wearing and tearing of cutting tool and turned equivalent damage is increased, thereby be preferably 0.0001～0.03 quality %.Preferred especially B content is 0.0005～0.01 quality %.

Fe is the element that is contained inevitably in aluminium alloy.But, if its content is in the scope of 0.01～1 quality %, owing to be the amount that the quality bills of materials with common aluminium alloy contains, so the operation especially of seeking to reduce Fe needn't be arranged.Because as long as just the binding capacity with Si is few in above-mentioned scope, thus Si is dispersed into the resultful Si of smear metal cuttability as independent particle, thus can keep excellent smear metal cuttability.If Fe content is reduced to less than 0.01 quality %, then cost increases, and when surpassing 1 quality %, with the compound increase of Si, the independent particle of Si reduces, and the smear metal cuttability reduces.Preferred especially Fe content is 0.05～0.7 quality %.

Zr and V and Ti, B are same, make the ingot structure miniaturization, the appearance and the solidification cracking of the macroscopical decorative pattern that generates on the face of tool when suppressing thickization of ingot structure.In addition, by and Al between form intermetallic compound, and be dispersed in the matrix and improve machinability.The content of these elements respectively when less than 0.01 quality %, above-mentioned effect deficiency, in addition, when surpassing 1 quality %, castibility reduces, thereby preferred 0.01～1 quality %.Particularly preferred content is respectively 0.03～0.7 quality %.In addition, Zr and Cr described later and Mn are same, have by suppressing to recrystallize the raising physical strength, simultaneously, improve corrosion proof effect.Even in these effects, Zr content can not be expected mechanical property and corrosion proof raising, in addition when less than 0.01 quality %, because of forming by recrystallizing the coarse grain that causes, it is unstable that smear metal cuttability on the section direction becomes, on the other hand, and when surpassing 1 quality %, the thermal distortion resistance that post forming adds man-hour rises, productivity reduces, thereby Zr content preferably is taken as 0.01～1 above-mentioned quality %, preferred especially 0.03～0.7 quality %.

For in aluminium alloy by suppressing to recrystallize the raising physical strength, improve solidity to corrosion simultaneously and add Cr and Mn.Cr content and Mn content are respectively when less than 0.01 quality %, the effect deficiency that inhibition recrystallizes, can not expect mechanical property and corrosion proof raising, in addition, because of forming, make the smear metal cuttability on the section direction become unstable by recrystallizing the coarse grain that causes, on the other hand, when surpassing 1 quality %, the thermal distortion resistance that post forming adds man-hour rises and the productivity reduction, thereby is preferably 0.01～1 quality %.In addition, because as long as just the binding capacity with Si is few in this scope for Cr content and Mn content, so Si is dispersed into the resultful Si of smear metal cuttability as independent particle, thus excellent smear metal cuttability can be kept.When Cr content and Mn content surpassed 1 quality %, with the compound increase of Si, the independent particle of Si reduced, and machinability reduces.Preferred especially Cr content and Mn content are respectively 0.03～0.7 quality %.

Sc and C and Zr, V, B, Ti are same, make the ingot structure miniaturization, the appearance and the solidification cracking of the macroscopical decorative pattern that generates on the face of tool when suppressing thickization of ingot structure.When less than 0.0001 quality %, above-mentioned effect deficiency is when surpassing 0.5 quality % respectively for the content of these elements, combine with Al or other elements, form hard particles, the wearing and tearing of cutting tool and turned equivalent damage are increased, thereby be preferably 0.0001～0.5 quality %.Particularly preferred content is respectively 0.01～0.3 quality %.

Ni can form the Ni-Al series intermetallic compound and improve machinability.Ni content when less than 0.005 quality %, above-mentioned effect deficiency, when surpassing 1 quality %, castibility and solidity to corrosion reduce, thereby are preferably 0.005～1 quality %.Preferred especially Ni content is 0.03～0.7 quality %.

Na, Sb, Ca and above-mentioned Sr are same, by coexisting with Si, make eutectic Si, the balling of primary crystal Si particle when solidifying, miniaturization simultaneously.Therefore, have and make machinability good and when improving machinability indirectly, suppress the effect of the wearing and tearing and turned etc. the damage of cutting tool.The content of these elements respectively when less than 0.001 quality %, above-mentioned effect deficiency, when surpassing 0.5 quality %, above-mentioned effect is saturated, loses the meaning that volume is added, thereby is preferably 0.001～0.5 quality %.Particularly preferred content is respectively 0.005～0.3 quality %.

Sn, Bi, In further improve machinability by coexisting with Si respectively.The content of these elements is taken as Sn:0.01～1 quality %, Bi:0.01～1 quality %, In:0.001～0.5 quality %.Respectively the time less than lower value, above-mentioned effect deficiency, when surpassing higher limit, not only solidity to corrosion reduces, and during because of cutting, particularly can produce squeeze crack during high-rate cutting, machined surface quality will descend.In addition, can bring out crackle during thermal distortion.The particularly preferred content of these elements is Sn:0.05～0.5 quality %, Bi:0.05～0.5 quality %, In:0.01～0.3 quality %.

Above-mentioned optional 16 kinds of elements if add a kind or more than 2 kinds or 2 kinds of arbitrary combination at least in 5 kinds of necessary elements, just can obtain corresponding effects.The aluminium alloy that claim the is 48～54 is to add the aluminium alloy of element for having obtained desired effect selection.In addition, add the occasion more than 2 kinds or 2 kinds, what more preferably that effect is different elements was selected combines.For example, can be divided into following each group element: make the ingot structure miniaturization, simultaneously to the appearance of macroscopical decorative pattern and the resultful A group element of the inhibition (Ti of solidification cracking, B, C, Sc), make Si as independent particle dispersive B group element (Fe), by suppressing to recrystallize the C group element (Cr that improves physical strength, Mn), make the ingot structure miniaturization, simultaneously the appearance of macroscopical decorative pattern and the inhibition of solidification cracking are produced effect, further by forming the D group element (Zr that intermetallic compound improves machinability, V), by forming the E group element (Ni) that intermetallic compound improves machinability, to balling of Si particle and the resultful F group element of miniaturization (Na, Sb, Ca), improve the G group element (Sn of machinability by coexisting with Si, Bi, In).And, for necessary element, can arbitrary combination add more than 1 group or 1 group.In addition, in by a plurality of elementary composition groups, can in group, at random select more than a kind or a kind.In addition, select the occasion of interpolation element arbitrarily with the group unit, the content of each element also is taken as within the above-mentioned scope.

The aluminium alloy that claim the is 71～78 has also been stipulated the aluminium alloy material of metal structure for except be defined as above-mentioned scope (36～70 of claims the) in the chemical constitution with alloy.

Here, Fig. 1 and Fig. 2 represent an example of the metal structure of the aluminium alloy material of the present invention that obtained by casting.Fig. 3 represents to cast after an example of the metal structure of the aluminium alloy material that operations such as Overheating Treatment, extruding are made.The alloy material of narrating in the aluminium alloy material of Fig. 3 and the background technology item is corresponding, is need to point out the alloy material that further improves aspect the wearing and tearing of machinability and instrument.

In Fig. 1 and Fig. 2, the part of representing with light color (being expressed as the part of primary crystal α-Al among Fig. 1) is a dendritic crystal, on its border, contain eutectic Si particle (being expressed as the part of eutectic Si among Fig. 1) and other second mutually the eutectic lamellar structure of particle (with the dark part of representing) to be three-dimensional shape continuous, be scattered in netted.On the other hand, can obviously find out, the existing aluminium alloy material of Fig. 3 become dendritic crystal second being cut off mutually of border, the Si particle is independent and the tissue morphology that distributes.

The difference that aluminium alloy material of the present invention is conceived to above-mentioned metal structure form is with the wearing and tearing of machinability and cutting tool and damage relevant aluminum alloy materials, specifically is exactly to have stipulated dendritic arm spacing (hereinafter referred to as " DAS ") and the aluminium alloy material of the eutectic lamellar structure that forms on the border of dendritic crystal.

Requiring average DAS (with reference to Fig. 1) in metal structure is 1～200 μ m.The reason that average DAS is taken as above-mentioned scope is, when being taken as less than 1 μ m, just must the speed of cooling when casting be taken as more than 1000 ℃/second or 1000 ℃/second, surpassed manufacturing boundary as the melting material because of average DAS, when surpassing 200 μ m, cause the remarkable reduction of machinability, mechanical characteristics.In addition, preferred average DAS is 3～100 μ m.

On the dendritic crystal border, in the aluminium parent phase, be formed with the second eutectic lamellar structure of particle mutually of the eutectic Si particle that contains median size 0.01～5 μ m and other.During cutting,, also can become the starting point that smear metal is cut off, have the effect that improves machinability, in addition,, peel off like that according to the eutectic lamellar structure and separate, can machinability will improve owing to form lamellated eutectic lamellar structure even eutectic Si particle is independent.Such eutectic lamellar structure is three-dimensional shape and is scattered in continuously nettedly, thereby above-mentioned separation can recur and obtain good machinability, and the wearing and tearing of cutting tool are few.On the other hand, in metal structure form shown in Figure 3, owing to become the Si particle independent distribution that starting point is cut off in smear metal, so aspect the wearing and tearing that relate to machinability, cutting tool, just poorer than the situation of the net distribution of Fig. 1, Fig. 2.

The median size of above-mentioned eutectic Si particle improves the effect deficiency of machinability when less than 0.01 μ m.In addition, eutectic Si particle has Si content many more, and the tendency that particle diameter is big more also can access good machinability even median size surpasses 5 μ m, but when particle diameter was big, the wearing and tearing of instrument and turned etc. damage increased sharply.Therefore, in order to realize good machinability and to suppress these two aspects of damage of instrument, the median size of eutectic Si particle is defined as 0.01～5 μ m.Particularly from the viewpoint of inhibition instrument damage, preferred median size is 0.1～3 μ m.

In addition, so-called other the second phase particle is CuAl ₂, Al-Fe-Si system, Al-Mn-Si system, Al-Cr-Si system, Al-Fe system etc. at Al and add the particle that generates between element, preferred median size is at 0.1～0.3 μ m.

As shown in Figure 1, the size of above-mentioned eutectic lamellar structure is represented with the skeleton line length (L) and the width (W) of length direction.So-called above-mentioned skeleton line length (L) is meant the skeleton line length of the skeleton of expression eutectic lamellar structure, so-called width be meant with the vertical direction of above-mentioned skeleton line on maximum width.Therefore, in the present invention, come regulation eutectic lamellar structure, average skeleton line length (Lm) is taken as 0.5 μ m or 0.5 μ m is above, width average (Wm) is taken as 0.5 μ m or more than the 0.5 μ m with these mean value and ratio.When on average skeleton line length (Lm) and width average (Wm) are respectively less than 0.5 μ m, can not obtain good machinability.Preferred average skeleton line length (Lm) is 3 μ m or more than the 3 μ m, and preferred width average (Wm) is 1 μ m or more than the 1 μ m.In addition, from good this point of isolating continuity, the mean value (L/Wm) of the ratio (L/W) of preferred skeleton line length (L) and width average (W) is the elongated shape more than 3 or 3.

In above-mentioned eutectic lamellar structure, constitute second population and the area ratio/occupancy ratio of particle mutually of the eutectic Si particle of eutectic lamellar structure and other by regulation, can obtain more excellent machinability.That is, in above-mentioned eutectic lamellar structure, preferred above-mentioned eutectic Si particle and other second mutually particle amount to and have 500/mm ²Or 500/mm ²More than, and the area ratio/occupancy ratio of these particles is 0.1～50%.Population amounts to 500/mm of less than ²Perhaps during area ratio/occupancy ratio less than 0.1%, improve the effect deficiency of machinability.In addition, have that Si content is many more, eutectic Si population and a big more tendency of area ratio/occupancy ratio,, also can obtain good machinability even area ratio/occupancy ratio surpasses 50%.But area ratio/occupancy ratio surpasses at 50% o'clock, the physical strength of alloy material, particularly ductility (tensile strength) and solidity to corrosion reduction, thereby, the higher limit of area ratio/occupancy ratio is taken as 50%.The viewpoint that suppresses physical strength and corrosion proof reduction when keeping machinability, eutectic Si particle and other second mutually the particularly preferred population total of particle at 1000/mm ²Or 1000/mm ²More than, particularly preferred area ratio/occupancy ratio is 0.3～40%.

Have of the method manufacturing of the aluminium alloy material of above-mentioned metal structure with 79～89 of claims the.That is, by using the alloy of regulation chemical constitution, all conditions of regulation casting just can be made the alloy material with netted eutectic lamellar structure.

The molten metal that the casting speed of dividing with 30～5000mm/, 10～600 ℃/second speed of cooling will remain on the aluminium alloy of solidus temperature or the regulation chemical constitution more than the solidus temperature is continuously cast into the section bar of required section form.In the process of setting betwixt, Si-Sr compound in the molten metal becomes nuclear, fine and be dispersed among the Al by the eutectic Si particle of balling, simultaneously, dendritic crystal is grown up into the average DAS of above-mentioned scope, on the border of dendritic crystal, contain eutectic Si particle and other second mutually the eutectic lamellar structure of particle form netted with the size of regulation.

Casting speed is in not enough 30mm/ timesharing, eutectic Si thickization of particle and particle distribution becomes sparse, thereby can not obtain good machinability, the damage of cutting tool increases sharply.On the other hand, surpass the 5000mm/ timesharing, solidification cracking in addition, probably can take place, produce casting flaw such as pore and make the casting billet surface variation in the section form that can not obtain wishing in section bar.Preferred casting speed is 50～3000mm/ branch, is more preferably 100～2000mm/ branch.

During 10 ℃/second of speed of cooling less thaies, eutectic Si thickization of particle and particle distribution becomes sparse, thereby the damage of cutting tool increases sharply.On the other hand, surpass 600 ℃/second speed of cooling if want to reach, just special equipment and process management must be arranged, productivity will reduce.In addition, problem also takes place aspect cost.Preferred speed of cooling is 30～500 ℃/second, is more preferably 30～300 ℃.

As long as can reach above-mentioned casting condition, the mode that casts continuously is not just limited, for example can enumerate vertical continuous casting method, horizontal continuous-casting method.In addition, in order to reach above-mentioned speed of cooling, can recommend direct cooling.

Without any qualification, for example can enumerate circle, polygon, other abnormity for the section form of molded shapes, recommend the solid shape material.In addition, the hollow shape material of section with hollow bulb is also included within the present invention.

In the occasion of solid shape material, preferably external with the circle of diameter 10～150mm in section.During external circular diameter is not enough 10mm, the mobile of molten metal significantly reduces, to the shaping of the regulation shape difficulty that becomes.On the other hand, when surpassing 150mm, the cooling deficiency that the increase of reason basal area produces makes that reaching above-mentioned speed of cooling becomes difficult, is difficult to form netted eutectic lamellar structure.And then probably can cause machinability to reduce.

Ageing treatment for the section bar that casts continuously is taken at 100～300 ℃ of following maintenances 0.5～100 hour.Around here, the element of solid solution is separated out in parent phase during casting, and physical strength becomes maximum, can obtain good machinability simultaneously.When 100 ℃ of aging temp less thaies or hold-time less than are below 0.5 hour, become inferior timeliness state, the quality of the finished surface during cutting will reduce, and machinability, mechanical characteristics do not rise yet simultaneously.In addition, aging temp surpasses 300 ℃ or hold-time when surpassing 100 hours, the effect that obsolesces state, and machinability, mechanical characteristics reduce.Thereby preferred aging condition is to keep 1～30 hour down at 120～220 ℃.

The top layer of the section bar of casting is formed with heterogeneity layers such as negative segregation layer, chill, coarse grain layer when solidifying.Because such heterogeneity layer reduces the quality of section bar, so the part of the degree of depth 0.1～10mm of preferably removing the top layer is to get rid of the heterogeneity layer.The amount of removing on top layer during its degree of depth is not enough 0.1mm, can not be removed the heterogeneity layer fully, if remove to 10mm, just can get rid of the heterogeneity layer really, removes then to lose the meaning of removing more than the 10mm and wasted material.Thereby preferably the degree of depth of the amount of removing is 0.2～5mm.Also can be after casting whenever carry out removing of top layer before the post forming processing before the ageing treatment or after the ageing treatment.In addition, also unqualified for the method for removing, for example can enumerate the processing that strips off the skin, peel off processing.

The section bar of casting if desired, can be implemented post forming processing before ageing treatment or after the ageing treatment, be shaped as needed shape.So long as can reduce the plastic working of cross-sectional area, just do not limit for the post forming working method, for example can enumerate drawing, extruding, rolling etc.The processing temperature of preferred processing conditions is below 400 ℃ or 400 ℃, and the relative reduction in area (basal area that the basal area/processing after the processing is preceding) that is produced by processing is below 30% or 30%.When processing temperature surpasses 400 ℃, be dispersed in the eutectic Si particle coacervation in the eutectic lamellar structure, become thick spherically, machinability is reduced.In addition, implement relative reduction in area and surpass for 30% the man-hour that adds, the eutectic lamellar structure is destroyed, and machinability is reduced, and the quality of alloy material reduces simultaneously.Condition in the preferred post forming processing be processing temperature below 250 ℃ or 250 ℃, relative reduction in area is below 20% or 20%.

In addition, suitable carry out before the ageing treatment or post forming processing before homogenizing handle and the thermal treatment of solution treatment etc.

The section bar of aluminium alloy material of casting with the present invention or the post forming processing of casting back is suitable to cut off with saw or stapling machine.For example cut into the short material of not enough 1m or long size material or the work in-process material of length 1～10m, these cut off material and are regardless of length, are also included within the present invention.

Creating conditions of other can be according to usual method.

By above order, the present invention has following effect.

According to the invention of claim 1, the Si particle is because of the Sr miniaturization and by balling, thereby can access the wearing and tearing of the good and cutting tool of the smear metal cuttability of the alloy material that is made of this alloy and damage few aluminium alloy.In addition, can access mechanical characteristics, the surface passivation property handled, the also excellent aluminium alloy of plastic working because of containing Mg, Zn.

According to the invention of claim 2, can access the more excellent aluminium alloy of mechanical characteristics.

According to the invention of claim 3, can access the more excellent aluminium alloy of machinability.

According to the invention of claim 4, can access the more excellent aluminium alloy of mechanical characteristics and the surface passivation property handled.

According to the invention of claim 5, make further balling of Si particle and miniaturization, can access the wearing and tearing of the good and cutting tool of smear metal cuttability and damage few aluminium alloy.

According to the invention of claim 6, the Si particle is because of Sr or also have Na, Ca miniaturization and balling, thereby can access the wearing and tearing of the good and cutting tool of the smear metal cuttability of the alloy material that is made of this alloy and damage few aluminium alloy.In addition, can access mechanical characteristics, solidity to corrosion, the surface passivation property handled, the also excellent aluminium alloy of plastic working because of containing Mg, Zn.In addition, because of containing Cu mechanical characteristics is improved.Because of containing Fe, help Si as particle dispersion separately, improve machinability.Can improve physical strength because of containing Cr, Mn.Because of containing Zr, physical strength, solidity to corrosion and machinability are improved.In addition, because of containing Ti physical strength and solidity to corrosion are improved.

According to the invention of claim 7, can access the more excellent aluminium alloy of mechanical characteristics.

Invention according to Claim 8 can access the more excellent aluminium alloy of machinability.

According to the invention of claim 9, can access the more excellent aluminium alloy of mechanical characteristics and the surface passivation property handled.

According to the invention of claim 10, make further balling of Si particle and miniaturization, can access the wearing and tearing of the good and cutting tool of smear metal cuttability and damage few aluminium alloy.

According to the invention of claim 11, can access the more excellent aluminium alloy of mechanical characteristics.

According to the invention of claim 12, make Si as particle dispersion separately, can keep more excellent smear metal cuttability.

According to the invention of claim 13, can access the more excellent aluminium alloy of physical strength and solidity to corrosion.

According to the invention of claim 14, can access the more excellent aluminium alloy of physical strength, solidity to corrosion and machinability.

According to the invention of claim 15, can access the more excellent aluminium alloy of physical strength and solidity to corrosion.

According to the invention of claim 16, make further balling of Si particle and miniaturization, can access the wearing and tearing of the good and cutting tool of smear metal cuttability and damage few aluminium alloy.

According to the invention of claim 17, can access the more excellent aluminium alloy of mechanical characteristics.

According to the invention of claim 18, Si is disperseed as independent particle, can keep more excellent smear metal cuttability.

According to the invention of claim 19 or claim 20, can access the more excellent aluminium alloy of physical strength and solidity to corrosion.

According to the invention of claim 21, can access the more excellent aluminium alloy of physical strength, solidity to corrosion and machinability.

According to the invention of claim 22, can access the more excellent aluminium alloy of physical strength and solidity to corrosion.

According to the invention of claim 23 or claim 24, make further balling of Si particle and miniaturization, can access the wearing and tearing of the good and cutting tool of smear metal cuttability and damage few aluminium alloy.

According to the invention of claim 25, owing to can make the fine and balling of Si particle, so the smear metal cuttability of aluminium alloy material is good and the wearing and tearing of cutting tool and damage are few.In addition, because of other interpolation element, mechanical characteristics, surface passivation are handled property, plastic working is also good.

According to the invention of claim 26, because above-mentioned Si particle is by miniaturization, thereby the wearing and tearing of cutting tool and damage are still less.

According to the invention of claim 27, because above-mentioned Si particle is by balling, thereby the wearing and tearing of cutting tool and damage are still less.

According to the invention of claim 28, the Si particle is by fine and balling, and it is good and wearing and tearing and damage cutting tool are few to make the smear metal cuttability, and mechanical characteristics, surface passivation are handled the also excellent aluminium alloy material of property, plastic working.

According to the invention of claim 29, can make aluminium alloy material with the best machinability.

According to the invention of claim 30, can make and have the best machinability, mechanical characteristics, corrosion proof aluminium alloy material.

According to the invention of claim 31, can make and have the best machinability, mechanical characteristics, corrosion proof aluminium alloy material.And productivity is also good.

According to the invention of claim 32, can make and have favorable mechanical characteristic, corrosion proof aluminium alloy material.

According to the invention of claim 33, can make aluminium alloy material with favorable mechanical characteristic.

According to the invention of claim 34, the recrystallized structure on surface can be made the particularly aluminium alloy material of mechanical characteristics excellence by miniaturization.

According to the invention of claim 35, can the more excellent aluminium alloy material of manufacturing machine characteristic.

Invention according to claim 36, the Si particle because of Sr by miniaturization and balling, and on the border of dendritic crystal, form the eutectic lamellar structure, thereby can make the machinability of the alloy material that constitutes by this alloy good and can make the wearing and tearing of cutting tool and damage few.In addition, because of containing Mg, Cu, Zn, can also obtain excellent mechanical characteristics, particularly tensile properties, solidity to corrosion, the surface passivation property handled, plastic working.

According to the invention of claim 37, can access the more excellent aluminium alloy of mechanical characteristics.

According to the invention of claim 38, can access the more excellent aluminium alloy of machinability.

According to the invention of claim 39, can access the more excellent aluminium alloy of mechanical characteristics and machinability.

According to the invention of claim 40, can access the more excellent aluminium alloy of mechanical characteristics and the surface passivation property handled.

According to the invention of claim 41, make further balling of Si particle and miniaturization, can access the wearing and tearing of the good and cutting tool of smear metal cuttability and damage few aluminium alloy.

Invention according to claim 42, the Si particle because of Sr or also have Na, Sb, Ca any by miniaturization and balling, and on the border of dendritic crystal, form the eutectic lamellar structure, thereby can make the machinability of the alloy material that constitutes by this alloy good and can make the wearing and tearing of cutting tool and damage few.In addition, because of Mg, Zn, Cu, can also obtain excellent mechanical characteristics, particularly tensile properties, solidity to corrosion, the surface passivation property handled, plastic working.In addition, because of containing any of Ti, B, C, Sc, when ingot structure is by miniaturization, can suppress the appearance and the solidification cracking of macroscopical decorative pattern.Because of containing Fe, help Si to disperse as independent particle, can improve machinability.Because of containing Cr, Mn physical strength is improved.Cause contains any of Zr, V, makes ingot structure by miniaturization, can suppress the appearance and the solidification cracking of macroscopical decorative pattern simultaneously, in addition, because of the formation intermetallic compound, and machinability is improved.Because of containing Ni, form intermetallic compound, machinability is improved.Cause contains any of Sn, Bi, In, and machinability improves.

According to the invention of claim 43, can access the more excellent aluminium alloy of mechanical characteristics.

According to the invention of claim 44, can access the more excellent aluminium alloy of machinability.

According to the invention of claim 45, can access the more excellent aluminium alloy of mechanical characteristics and machinability.

According to the invention of claim 46, can access the more excellent aluminium alloy of mechanical characteristics and the surface passivation property handled.

According to the invention of claim 47, make further balling of Si particle and miniaturization, can access the wearing and tearing of the good and cutting tool of smear metal cuttability and damage few aluminium alloy.

According to the invention of claim 48, can access and make the further miniaturization of ingot structure, suppress the appearance of macroscopical decorative pattern and the aluminium alloy of solidification cracking simultaneously.

According to the invention of claim 49, make Si as particle dispersion separately, can keep more excellent smear metal cuttability.

According to the invention of claim 50, can access the more excellent aluminium alloy of physical strength and solidity to corrosion.

According to the invention of claim 51, when can access ingot structure by further miniaturization, the appearance of macroscopical decorative pattern and solidification cracking are suppressed and have the aluminium alloy of good machinability.

According to the invention of claim 52, can access the more excellent aluminium alloy of machinability.

According to the invention of claim 53, make further balling of Si particle and miniaturization, can access the wearing and tearing of the good and cutting tool of smear metal cuttability and damage few aluminium alloy.

According to the invention of claim 54, can access the more excellent aluminium alloy of machinability.

According to the invention of claim 55～57, when can access ingot structure by further miniaturization, the repressed aluminium alloy of the appearance of macroscopical decorative pattern and solidification cracking.

According to the invention of claim 58, Si is disperseed as independent particle, can keep more excellent smear metal cuttability.

According to the invention of claim 59 or claim 60, can access the more excellent aluminium alloy of physical strength and solidity to corrosion.

According to the invention of claim 61 or claim 62, when can access ingot structure by further miniaturization, the appearance and the solidification cracking of macroscopical decorative pattern are suppressed, and have the aluminium alloy of good machinability.

According to the invention of claim 63, when can access ingot structure by further miniaturization, the repressed aluminium alloy of the appearance of macroscopical decorative pattern and solidification cracking.

According to the invention of claim 64, can access the more excellent aluminium alloy of machinability.

Each invention according to claim 65～67 makes further balling of Si particle and miniaturization, can access the wearing and tearing of the good and cutting tool of smear metal cuttability and damage few aluminium alloy.

According to every invention of claim 69～70, can access the more excellent aluminium alloy of machinability.

According to the invention of claim 71, eutectic Si particle becomes the starting point of smear metal cut-out separately and machinability is improved, and by the continuous separation of eutectic lamellar structure machinability is improved.And because of the miniaturization and the balling of eutectic Si particle, the wearing and tearing of cutting tool and damage are few.Property is handled in mechanical characteristics, particularly tensile properties, solidity to corrosion, surface passivation in addition, plastic working is also good.

According to the invention of claim 72, can obtain more excellent machinability, can access the wearing and tearing of cutting tool and damage repressed aluminium alloy material simultaneously.

According to the invention of claim 73, can access the more excellent aluminium alloy material of machinability and mechanical characteristics.

According to the invention of claim 74, when obtaining more excellent machinability, the wearing and tearing and the damage of cutting tool are suppressed.

According to the invention of claim 75, can access the more excellent aluminium alloy material of machinability.

According to the invention of claim 76, can access the more excellent aluminium alloy material of machinability.

According to the invention of claim 77, can obtain excellent especially machinability, the wearing and tearing and the damage of cutting tool simultaneously is suppressed.

According to the invention of claim 78, can obtain excellent especially machinability, the wearing and tearing and the damage of cutting tool simultaneously is suppressed.

Invention according to claim 79, can make and have eutectic Si particle and eutectic lamellar structure, have the wearing and tearing of excellent machinability and cutting tool and damage less and also mechanical characteristics, particularly tensile properties, solidity to corrosion, surface passivation handle the aluminium alloy material of property, plastic working excellence.

According to Claim 80 or the invention of claim 81, particularly can form above-mentioned eutectic Si particle and eutectic lamellar structure really.

2 invention according to Claim 8, the element of solid solution is separated out fully in the time of can making casting, has the excellent especially machinability and the aluminium alloy material of mechanical characteristics.

3 invention according to Claim 8 can be made and had the above-mentioned eutectic Si particle and the solid shape material of eutectic lamellar structure.

4 invention according to Claim 8 reaches above-mentioned speed of cooling easily when the flowability of molten metal is good especially.

5 invention according to Claim 8 can be got rid of the heterogeneity layer on top layer, obtains high-quality aluminium alloy material.

6 invention according to Claim 8 can be got rid of the heterogeneity layer really.

The cohesion of eutectic Si particle and the destruction of eutectic lamellar structure are not worried in 7 invention according to Claim 8, can be processed into desirable shape when aluminium alloy material is kept excellent machinability.

According to Claim 88 or the invention of claim 89, promptly use post forming processing, also can keep machinability really.

The simple declaration of accompanying drawing

Fig. 1 is the photo of the metal structure of the expression aluminium alloy material corresponding with claim 71～75 of the present invention.

The photo of another metal structure of Fig. 2 another aluminium alloy material that to be expression corresponding with claim the of the present invention 71～75.

Fig. 3 is the photo of the metal structure of the existing aluminium alloy material of expression.

Fig. 4 is that expression squeeze crack rate is the photo in 98.2% face of tool in the quality of the finished surface of estimating example II A.

Fig. 5 is that expression squeeze crack rate is the photo in 3.4% face of tool in the quality of the finished surface of estimating example II A.

Fig. 6 is the sectional view of gas-pressurization type insulation ring (ホットトップ) casting device major portion used in example II A, IIB, IIC.

Fig. 7 is the sectional view of the major portion of horizontally continuously casting device used in example II B.

Embodiment

I. the 1st and the 2nd kind of aluminium alloy, alloy material and manufacture method thereof

(with the corresponding embodiment of claim 1～35)

Prepare each aluminium alloy formed of the alloy No.I-1～I-17 shown in the table 1.Alloy No.I-1,2 contains Mg, Si, Zn, Sr, and all the other are made up of aluminium and impurity, is and claim 1～5 a corresponding composition.Alloy No.I-3～I-12 has added in the above-mentioned element any selection element of 8 kinds, is the composition corresponding with claim 6～24.Alloy No.I-13～I-17 is their relatively composition.

As material,, be made into bar with these aluminium alloys by rough-cast, extruding, drawing.

At first, with DC (directly Quench) casting, make blank with the casting speed of 80mm/min.This blank after 520 ℃ the homogenizing processing was carried out in maintenance in 10 hours down, is squeezed into the bar of diameter 15mm under the condition of 450 ℃ of blank temperature, extruded product speed 12m/min, extrusion ratio 35.This squeeze wood is kept down carrying out solution treatment in 3 hours at 540 ℃, carry out drawing with 25% relative reduction in area again, keep down implementing ageing treatment in 5 hours, make the test material at 160 ℃.

The material of making (drawing material) of respectively testing is measured 0.2% yield strength, tensile strength, tension set, estimate wearing and tearing, the surface passivation property handled, the plastic working of smear metal cuttability, solidity to corrosion, instrument simultaneously with following method.

[wearing and tearing of smear metal cuttability, instrument]

Carry out the wet type cutting with superhard blade with the cutting speed of 150m/min, the feed rate of 0.2mm/rev, the depth of cut of 1.0mm, estimate the smear metal cuttability with smear metal number/100g.

[solidity to corrosion]

Carry out salt spray testing according to JIS Z2371, use the corrosion decrement that produces by spraying in 1000 hours to estimate.

[wearing and tearing of instrument]

By DRY CUTTING with rapid steel single-blade lathe tool, under the condition of the depth of cut of the feed rate of the cutting speed of 200m/min, 0.2mm/rev, 10mm, carry out 5 minutes continuous cutting, measure the flank wear width of lathe tool.

[surface passivation processing]

Implement the sulfuric acid surface passivation with usual method and handle, estimate with the thickness of the surface passivation epithelium that generates.

[plastic working]

Use by the size of the limit cold upsetting rate of cold upsetting test and estimate.The content of test is to investigate the crackle generation limit that is caused by cold working (forging), estimates by this.

These results are shown in Table 1 in the lump.In addition, for wearing and tearing, the surface passivation property handled, the plastic working of smear metal cuttability, solidity to corrosion, instrument, relatively estimate as benchmark to compare alloy No.I-13.Represent that with the usefulness zero that compares the equal performance of alloy No.I-13 excellent represents with ◎, poor represents worse usefulness * expression with △.

Table 1

Alloy No. (I-n)		Al-Mg-Si is the chemical constitution (quality %, all the other be Al and impurity) of alloy													All characteristics
															All characteristics								Tensile properties			The smear metal cuttability	Solidity to corrosion	The wearing and tearing of instrument	The surface passivation property handled	Plastic working
															0.2% yield strength N/mm ²	Tensile strength N/mm ²	Tension set %						Tensile properties
																		Mg	??Si	Zn	?Sr	?Cu	?Fe	?Mn	?Cr						?Zr	?Ti	??Na	??Ca	そ he
		Invention	????1	1.0	??1.8	0.3	?0.03	?-	?-	?-	??-	??-	??-	???-				Mg	??Si	Zn	?Sr	?Cu	?Fe	?Mn	?Cr						?Zr	?Ti	??Na	??Ca	そ he	???-	????-	?290	?315	?15.5	??○	??○	??◎	??◎	??○
????2	0.6		????1	1.0	??1.8	0.3	?0.03	?-	?-	?-	??-	??-	??-	???-	??4.8	0.2	?0.05	?-	?-	?-	??-	??-	??-	???-	???-	????-	?315	?338	?9.0	??○	??○	??◎	??◎	??○		???-	????-	?290	?315	?15.5	??○	??○	??◎	??◎	??○
????2	0.6		????3	1.0	??1.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??-	???-	??4.8	0.2	?0.05	?-	?-	?-	??-	??-	??-	???-	???-	????-	?315	?338	?9.0	??○	??○	??◎	??◎	??○	???-	????-	?305	?335	?14.0	??○	??○	??◎	??◎	??○
????4	1.0		????3	1.0	??1.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??-	???-	??2.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??-	???-	???-	????-	?312	?340	?12.0	??○	??○	??○	??◎	??○	???-	????-	?305	?335	?14.0	??○	??○	??◎	??◎	??○
????4	1.0		????5	1.0	??4.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??-	???-	??2.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??-	???-	???-	????-	?312	?340	?12.0	??○	??○	??○	??◎	??○	???-	????-	?328	?348	?11.0	??◎	??○	??○	??○	??○
????6	1.0		????5	1.0	??4.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??-	???-	??2.8	0.3	?0.01	?0.2	?0.2	?0.01	??-	??-	??-	???-	???-	????-	?310	?339	?12.5	??○	??○	??○	??◎	??○	???-	????-	?328	?348	?11.0	??◎	??○	??○	??○	??○
????6	1.0		????7	1.0	??2.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??-	???-	??2.8	0.3	?0.01	?0.2	?0.2	?0.01	??-	??-	??-	???-	???-	????-	?310	?339	?12.5	??○	??○	??○	??◎	??○	???-	????-	?315	?336	?12.6	??○	??○	??○	??◎	??○
????8	1.0		????7	1.0	??2.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??-	???-	??2.8	0.3	?0.03	?0.2	?0.2	?0.01	??0.2	??-	??-	???-	???-	????-	?320	?345	?13.5	??○	??○	??○	??◎	??○	???-	????-	?315	?336	?12.6	??○	??○	??○	??◎	??○
????8	1.0		????9	1.0	??2.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??0.2	??-	???-	??2.8	0.3	?0.03	?0.2	?0.2	?0.01	??0.2	??-	??-	???-	???-	????-	?320	?345	?13.5	??○	??○	??○	??◎	??○	???-	????-	?315	?340	?13.5	??○	??○	??○	??◎	??○
????10	1.0		????9	1.0	??2.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??0.2	??-	???-	??2.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??0.2	???-	???-	????-	?318	?340	?12.5	??○	??○	??○	??◎	??○	???-	????-	?315	?340	?13.5	??○	??○	??○	??◎	??○
????10	1.0		????11	1.0	??2.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??-	??0.005	??2.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??0.2	???-	???-	????-	?318	?340	?12.5	??○	??○	??○	??◎	??○	???-	????-	?310	?340	?13.0	??○	??○	??◎	??◎	??○
????12	1.0		????11	1.0	??2.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??-	??0.005	??2.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??-	???-	??0.005	????-	?305	?335	?13.5	??○	??○	??◎	??◎	??○	???-	????-	?310	?340	?13.0	??○	??○	??◎	??◎	??○
????12	1.0		Relatively	????13	1.0	??0.8	-	?-	?0.2	?0.2	?0.10	??-	??-	??-	??2.8	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??-	???-	??0.005	????-	?305	?335	?13.5	??○	??○	??◎	??◎	??○	???-	???-	???Pb：0.5 ???Bi：0.5	?280	?310	?16.0	??○	??○	??○	??○	??○
????14	1.0	??2.8		????13	1.0	??0.8	-	?-	?0.2	?0.2	?0.10	??-	??-	??-	0.3	? -	?0.2	?0.2	?0.01	??-	??-	??-	???-	???-	????-	?322	?342	?12.1	??○	??○	??△	??○	??○		???-	???-	???Pb：0.5 ???Bi：0.5	?280	?310	?16.0	??○	??○	??○	??○	??○
????14	1.0	??2.8		????15	1.0	??4.8	0.3	? -	?0.2	?0.2	?0.01	??-	??-	??-	0.3	? -	?0.2	?0.2	?0.01	??-	??-	??-	???-	???-	????-	?322	?342	?12.1	??○	??○	??△	??○	??○	???-	???-	????-	?327	?339	?11.6	??○	??○	??△	??○	??△
????16	1.0	? 11.5		????15	1.0	??4.8	0.3	? -	?0.2	?0.2	?0.01	??-	??-	??-	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??-	???-	???-	????-	?295	?315	?9.5	??◎	??△	??×	??△	??×	???-	???-	????-	?327	?339	?11.6	??○	??○	??△	??○	??△
????16	1.0	? 11.5		????17	1.0	? 11.5	0.3	?-	?0.2	?0.2	?0.01	??-	??-	??-	0.3	?0.03	?0.2	?0.2	?0.01	??-	??-	??-	???-	???-	????-	?295	?315	?9.5	??◎	??△	??×	??△	??×	???-	???-	????-	?290	?309	?7.9	??◎	??△	??×	??△	??×

Have being illustrated in beyond the scope of the invention of rolling off the production line in the table.

In addition, for invention alloy No.I-1, I-3～I-5, I-11, I-12, comparison alloy No.I-14～I-17, investigated median size, particle dia scope, the average line of apsides ratio of Si particle.Show the result in table 2, for the wearing and tearing of the Si content that gives their influences, Sr content, Na content, Ca content, smear metal cuttability, instrument, disclose once more simultaneously.

Table 2

Alloy No. (I-n)		The content of Si, Sr, Na, Ca (quality %)				The Si particle			All characteristics
						The Si particle			All characteristics		Median size (μ m)	The scope of particle dia (μ m)	Average line of apsides ratio	The smear metal cuttability	The wearing and tearing of instrument
						????Si	??Sr	????Na	????Ca
		Invention	??1	????1.8	??0.03	????Si	??Sr	????Na	????Ca	????-						????-	????1.2	??0.3-3.3	????1.5	??○	??◎
??3	????1.8		??1	????1.8	??0.03	??0.03	????-	????-	????1.2	????-	??0.3-3.2	????1.3	??○	??◎		????-	????1.2	??0.3-3.3	????1.5	??○	??◎
??3	????1.8		??4	????2.8	??0.03	??0.03	????-	????-	????1.2	????-	??0.3-3.2	????1.3	??○	??◎	????-	????3.1	??0.8-4.2	????2.3	??○	??○
??5	????4.8		??4	????2.8	??0.03	??0.03	????-	????-	????4.9	????-	??1.2-6.6	????2.8	??◎	??○	????-	????3.1	??0.8-4.2	????2.3	??○	??○
??5	????4.8		??11	????2.8	??0.03	??0.03	????-	????-	????4.9	????0.005	??1.2-6.6	????2.8	??◎	??○	????-	????3.0	??0.7-4.2	????2.3	??○	??◎
??12	????2.8		??11	????2.8	??0.03	??0.03	????-	????0.005	????3.1	????0.005	??0.7-4.1	????2.1	??○	??◎	????-	????3.0	??0.7-4.2	????2.3	??○	??◎
??12	????2.8		Relatively	??14	????2.8	??0.03	????-	????0.005	????3.1	??-	??0.7-4.1	????2.1	??○	??◎	????-	????-	????3.3	??0.1-5.5	????4.1	??○	??△
??15	????4.8	??-		??14	????2.8	????-	????-	????4.2	??0.1-6.9	??-	????4.2	??○	??△		????-	????-	????3.3	??0.1-5.5	????4.1	??○	??△
??15	????4.8	??-		??16	????11.5	????-	????-	????4.2	??0.1-6.9	??0.03	????4.2	??○	??△	????-	????-	????6.5	??0.5-12.1	????3.6	??◎	??×
??17	????11.5	??-		??16	????11.5	????-	????-	????6.8	??0.3-11.2	??0.03	????4.9	??◎	??×	????-	????-	????6.5	??0.5-12.1	????3.6	??◎	??×

Can confirm by table 1,2 result, even the aluminium alloy material of alloy No.I-1～I-12 of the present invention adds Si since particle in by miniaturization by balling, thereby the smear metal cuttability is good, and the wearing and tearing of instrument are also few.In addition, intensity, solidity to corrosion, surface passivation are handled property, plastic working is also good.

II. the 3rd and the 4th kind of aluminium alloy, alloy material and manufacture method thereof

(with the corresponding embodiment of claim 36～89)

A. the chemical constitution of aluminium alloy

Prepare each aluminium alloy formed of the alloy No.IIA-1～IIA-129 shown in table 3～8.Alloy No.IIA-1～IIA-30 contains Mg, Si, Cu, Zn, Sr, and all the other are made up of aluminium and impurity, is and the corresponding composition of claim 36～41 of the present invention.Alloy No.IIA-1～IIA-10 is that it is relatively formed.Alloy No.IIA-41～IIA-108 (except the IIA-93,94,97) with alloy No.IIA-30 as essentially consist, alloy No.IIA-109～IIA-129 as essentially consist, and has added 16 kinds of alloys of selecting to add elements arbitrarily with alloy No.IIA-10 therein.Alloy No.IIA-94 with alloy No.IIA-7 (Mg:1 quality %, Si:0.8 quality %, Cu:0.2 quality %, Zn:0.2 quality %, Sr:0.03 quality %) as essentially consist, alloy No.IIA-93,97 as essentially consist, and has added the alloy of optional interpolation element with alloy (Mg:1 quality %, Si:1.5 quality %, Cu:0.2 quality %, Zn:0.2 quality %, Sr:0.03 quality %) therein.Alloy No.IIA-41～IIA-129 is and the corresponding composition of claim 42～70.

As cast material, with gas-pressurization type insulation ring casting described later, vertical continuous casting becomes the section of diameter 53mm to be circular solid shape material with these aluminium alloys.

[gas-pressurization type insulation ring casting]

In gas-pressurization type insulation ring casting device shown in Figure 6, (1) is the mold of the periphery of shaping ingot casting, and (2) are arranged on the molten metal Receiving bin of tubular on the top of mold (1).

Above-mentioned mold (1) has the cyclic blank part (3) of heat-eliminating medium portion's circulation within it that can make water etc., is formed with a plurality of ejiction openings (4) to outside opening on this blank part (3).And the heat-eliminating medium (C) that imports to blank part (3) by not shown ingress pipe cools off mold (1), and the casting material (S) that is shaped is carried out a refrigerative simultaneously, by ejiction opening (4) ejection, casting material (S) is carried out secondary cool off.In addition, the inner crest face (1a) of above-mentioned mold (1) is lower than (1b) above the outside, and above-mentioned molten metal Receiving bin (2) below between be formed with gap (6) to gas stream path (5) opening.

The inboard of the interior side direction mold (1) of the following quadrate part of above-mentioned molten metal Receiving bin (2) is flatly outstanding, is formed with over-hang part (7).Therefore, from the outside by gas import road (8) import to the gas stream path (5) gas under pressure (F) by above-mentioned gap (6) be directed to over-hang part (7) under, can make molten metal zone under the over-hang part (7) get rid of and the position that quite reduces in upper end than mold (1) on contact with the inwall of mold (1).And, the distance that contacts of molten metal and mold (1) be can control by the flow of gas under pressure (F), and then refrigerative time and process of setting controlled, can cast the casting material (S) of good metal structure.Among the figure, (M) overhang of expression over-hang part (7).

In addition,, lubricating oil is imported in the supply passageway (9) by the outside, by supply to the inwall of mold (1) from supply passageway (9) a plurality of fine supplying openings of ramose (10) by not shown path.(11) be the thermotolerance sealing material that embeds in the ditch that is arranged with on mold (1), to prevent the leakage of the gas of circulation in the gap (6).

According to above-mentioned vertical continuous casting device, can reach casting speed of the present invention and speed of cooling, can make casting material with excellent specific properties such as machinabilities.

Casting condition is got the casting condition b shown in the table 9 of back, and any alloy just can cast continuously well.

Then,, skin section is removed after the part of degree of depth 1.5mm, kept 11 hours and the enforcement ageing treatment down, make the test material at 170 ℃ by the processing that strips off the skin for the solid shape material of casting.

Respectively test material to what make, measure the mechanical characteristics (tensile properties) of 0.2% yield strength, tensile strength, tension set, investigated uniformity, plastic working, machinability, the wearing and tearing of instrument, the quality of finished surface, cutting crackle, solidity to corrosion, the surface passivation processing property of metal structure simultaneously with following method.And, except mechanical characteristics, compare with all characteristics by the squeeze wood of JIS A6262 alloy composition, estimate with following 5 grades.

◎ ◎: extremely good

◎: good

Zero: equal

△: poor slightly

*: poor

[uniformity of metal structure]

Estimate with the uniformity in size, form, continuity and the test material section of measurement result relevant and eutectic lamellar structure with size, the interval between branch of dendritic crystal tissue.

[plastic working]

Relative reduction in area with 20% is carried out drawing, and the result during by supply machinability test, tension test estimates with the velocity of variation of characteristic.

[machinability]

Carry out the wet type cutting with superhard blade with the cutting speed of 150m/min, the feed rate of 0.2mm/rev, the depth of cut of 1.0mm,, estimate machinability with the smear metal cuttability by smear metal number/100g investigation smear metal cuttability.

[wearing and tearing of instrument]

[quality of finished surface]

Face of tool to the test material that cuts in above-mentioned machinability test is used in unit surface (1mm ²) in the ratio (%) of the squeeze crack part that exists estimate.As the example in face of tool, the illustrative squeeze crack rate of Fig. 3 is 98.2% face of tool, and the illustrative squeeze crack rate of Fig. 4 is 3.4% face of tool.

[cutting crackle]

Carry out the wet type cutting with superhard blade with the cutting speed of 150m/min, the feed rate of 0.2mm/rev, the depth of cut of 3.0mm, be used in unit surface (1mm ²) the cutting cracking frequency (%) that go up to exist estimates.

[solidity to corrosion]

[surface passivation processing]

These results are shown in table 3～8 in the lump.

Table 3

Alloy No. (IIA-n)		The chemical constitution of aluminium alloy (quality %, all the other be Al and impurity)					All characteristics
							All characteristics											Mechanical characteristics			Organize uniformity	Plastic working	Machinability	The wearing and tearing of instrument	The quality of finished surface	The cutting crackle	Solidity to corrosion	The surface passivation property handled
							0.2% yield strength N/mm ²	Tensile strength N/mm ²	Tension set %									Mechanical characteristics
										????Mg	?Si	????Cu	??Zn	??Sr
		Invention	????1	????0.3	?2.8	????0.2				????Mg	?Si	????Cu	??Zn	??Sr	??0.2	??0.03	??285	??320	??7.2	?◎									?○	?◎	?◎	○	◎	?◎	?◎
????2	????2.0		????1	????0.3	?2.8	????0.2	?2.8	????0.2	??0.2	??0.03	??305	??330	??8.6	?○	??0.2	??0.03	??285	??320	??7.2	?◎	?○	?◎	?◎	○	◎	?◎	?◎		?○	?◎	?◎	○	◎	?◎	?◎
????2	????2.0		????3	????4.0	?2.8	????0.2	?2.8	????0.2	??0.2	??0.03	??305	??330	??8.6	?○	??0.2	??0.03	??307	??330	??8.0	?○	?○	?◎	?◎	○	◎	?◎	?◎	?○	?◎	?◎	○	◎	?◎	?◎
????4	????5.0		????3	????4.0	?2.8	????0.2	?2.8	????0.2	??0.2	??0.03	??300	??325	??8.0	?○	??0.2	??0.03	??307	??330	??8.0	?○	?○	?○	?○	◎	◎	?○	?○	?○	?◎	?◎	○	◎	?◎	?◎
????4	????5.0		????5	????6.0	?2.8	????0.2	?2.8	????0.2	??0.2	??0.03	??300	??325	??8.0	?○	??0.2	??0.03	??290	??320	??7.8	?○	?○	?○	?○	◎	◎	?○	?○	?○	?○	?○	◎	◎	?○	?○
????6	????1.0		????5	????6.0	?2.8	????0.2	?0.3	????0.2	??0.2	??0.03	??280	??315	??14.5	?◎	??0.2	??0.03	??290	??320	??7.8	?○	?○	?○	?◎	◎	◎	?◎	?◎	?○	?○	?○	◎	◎	?○	?○
????6	????1.0		????7	????1.0	?0.8	????0.2	?0.3	????0.2	??0.2	??0.03	??280	??315	??14.5	?◎	??0.2	??0.03	??305	??330	??13.0	?◎	?○	?○	?◎	◎	◎	?◎	?◎	?○	?○	?◎	◎	◎	?◎	?◎
????8	????1.0		????7	????1.0	?0.8	????0.2	?4.0	????0.2	??0.2	??0.03	??326	??340	??12.1	?◎	??0.2	??0.03	??305	??330	??13.0	?◎	?○	?◎	?○	○	◎	?◎	?◎	?○	?○	?◎	◎	◎	?◎	?◎
????8	????1.0		????9	????1.0	?6.0	????0.2	?4.0	????0.2	??0.2	??0.03	??326	??340	??12.1	?◎	??0.2	??0.03	??320	??330	??9.6	?○	?○	?◎	?○	○	◎	?◎	?◎	?○	?◎	?○	○	◎	?◎	?◎
????10	????1.0		????9	????1.0	?6.0	????0.2	?8.0	????0.2	??0.2	??0.03	??305	??325	??9.0	?○	??0.2	??0.03	??320	??330	??9.6	?○	?○	?◎	?○	○	◎	?○	?○	?○	?◎	?○	○	◎	?◎	?◎
????10	????1.0		????11	????1.0	?10.0	????0.2	?8.0	????0.2	??0.2	??0.03	??305	??325	??9.0	?○	??0.2	??0.03	??290	??310	??8.0	?○	?○	?◎	?○	○	◎	?○	?○	?○	?◎	?○	○	◎	?○	?○
????12	????1.0		????11	????1.0	?10.0	????0.2	?12.0	????0.2	??0.2	??0.03	??290	??315	??8.1	?○	??0.2	??0.03	??290	??310	??8.0	?○	?○	?◎	?○	○	◎	?○	?○	?○	?◎	?○	○	◎	?○	?○
????12	????1.0		????14	????1.0	?2.8	????0.05	?12.0	????0.2	??0.2	??0.03	??290	??315	??8.1	?○	??0.2	??0.03	??280	??310	??12.6	?◎	?○	?◎	?○	○	◎	?○	?○	?○	?○	?◎	○	◎	?◎	?◎
????15	????1.0		????14	????1.0	?2.8	????0.05	?2.8	????0.1	??0.2	??0.03	??280	??320	??13.0	?◎	??0.2	??0.03	??280	??310	??12.6	?◎	?○	?○	?◎	○	◎	?◎	?◎	?○	?○	?◎	○	◎	?◎	?◎
????15	????1.0		????16	????1.0	?2.8	????0.3	?2.8	????0.1	??0.2	??0.03	??280	??320	??13.0	?◎	??0.2	??0.03	??308	??340	??13.9	?◎	?○	?○	?◎	○	◎	?◎	?◎	?○	?◎	?◎	○	◎	?◎	?◎
????17	????1.0		????16	????1.0	?2.8	????0.3	?2.8	????0.5	??0.2	??0.03	??340	??376	??14.2	?◎	??0.2	??0.03	??308	??340	??13.9	?◎	?○	?◎	?◎	◎	◎	?◎	?◎	?○	?◎	?◎	○	◎	?◎	?◎
????17	????1.0		????18	????1.0	?2.8	????0.8	?2.8	????0.5	??0.2	??0.03	??340	??376	??14.2	?◎	??0.2	??0.03	??350	??395	??13.0	?◎	?○	?◎	?◎	◎	◎	?◎	?◎	?○	?◎	?○	◎	◎	?○	?◎
????19	????1.0		????18	????1.0	?2.8	????0.8	?2.8	????0.2	??0.01	??0.03	??305	??330	??14.5	?◎	??0.2	??0.03	??350	??395	??13.0	?◎	?○	?◎	?◎	◎	◎	?◎	?○	?○	?◎	?○	◎	◎	?○	?◎
????19	????1.0		????20	????1.0	?2.8	????0.2	?2.8	????0.2	??0.01	??0.03	??305	??330	??14.5	?◎	??0.05	??0.03	??308	??325	??15.0	?◎	?○	?◎	?◎	◎	◎	?◎	?○	?○	?◎	?◎	◎	◎	?◎	?○

Table 4

Alloy No. (IIA-n)		The chemical constitution of aluminium alloy (quality %, all the other be Al and impurity)					All characteristics
							All characteristics											Mechanical characteristics			Organize uniformity	Plastic working	Machinability	The wearing and tearing of instrument	The quality of finished surface	The cutting crackle	Solidity to corrosion	The surface passivation property handled
							0.2% yield strength N/mm ²	Tensile strength N/mm ²	Tension set %									Mechanical characteristics
										??Mg	????Si	??Cu	????Zn	??Sr
		Invention	??21	??1.0	????2.8	??0.2				??Mg	????Si	??Cu	????Zn	??Sr	????0.1	??0.03	??315	??335	??14.3	??◎									??○	??◎	??◎	??◎	??◎	??◎	??○
??22	??1.0		??21	??1.0	????2.8	??0.2	????2.8	??0.2	????0.5	??0.03	??332	??356	??11.2	??◎	????0.1	??0.03	??315	??335	??14.3	??◎	??○	??◎	??◎	??◎	??◎	??○	??○		??○	??◎	??◎	??◎	??◎	??◎	??○
??22	??1.0		??23	??1.0	????2.8	??0.2	????2.8	??0.2	????0.5	??0.03	??332	??356	??11.2	??◎	????1.0	??0.03	??335	??350	??12.6	??◎	??○	??◎	??◎	??◎	??◎	??○	??○	??○	??◎	??◎	??◎	??◎	??○	??○
??24	??1.0		??23	??1.0	????2.8	??0.2	????2.8	??0.2	????1.5	??0.03	??340	??355	??10.9	??◎	????1.0	??0.03	??335	??350	??12.6	??◎	??○	??◎	??◎	??○	??◎	??○	??○	??○	??◎	??◎	??◎	??◎	??○	??○
??24	??1.0		??25	??1.0	????2.8	??0.2	????2.8	??0.2	????1.5	??0.03	??340	??355	??10.9	??◎	????0.2	??0.005	??306	??319	??12.6	??◎	??○	??◎	??◎	??○	??◎	??○	??○	??○	??◎	??◎	??◎	??◎	??◎	??○
??26	??1.0		??25	??1.0	????2.8	??0.2	????2.8	??0.2	????0.2	??0.01	??310	??332	??15.6	??◎	????0.2	??0.005	??306	??319	??12.6	??◎	??○	??◎	??◎	??◎	??◎	??◎	??○	??○	??◎	??◎	??◎	??◎	??◎	??○
??26	??1.0		??27	??1.0	????2.8	??0.2	????2.8	??0.2	????0.2	??0.01	??310	??332	??15.6	??◎	????0.2	??0.05	??308	??327	??16.2	??◎	??○	??◎	??◎	??◎	??◎	??◎	??○	??○	??◎	??◎	??◎	??◎	??○	??○
??28	??1.0		??27	??1.0	????2.8	??0.2	????2.8	??0.2	????0.2	??0.1	??301	??320	??15.8	??◎	????0.2	??0.05	??308	??327	??16.2	??◎	??○	??◎	??◎	??◎	??◎	??○	??○	??○	??◎	??◎	??◎	??◎	??○	??○
??28	??1.0		??29	??1.0	????2.8	??0.2	????2.8	??0.2	????0.2	??0.1	??301	??320	??15.8	??◎	????0.2	??0.2	??301	??322	??15.1	??◎	??○	??◎	??◎	??◎	??◎	??○	??○	??○	??◎	??◎	??◎	??◎	??○	??○
??30	??1.0		??29	??1.0	????2.8	??0.2	????2.8	??0.2	????0.2	??0.03	??303	??326	??14.6	??◎	????0.2	??0.2	??301	??322	??15.1	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??○	??○
??30	??1.0		Relatively	??31	??0.01	????2.8	????2.8	??0.2	????0.2	??0.03	??303	??326	??14.6	??◎	??0.2	????0.2	??0.03	??265	??305	??8.2	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??○	??◎	??○	??×	??△	??○	??○
??32	? 7.0	????2.8		??31	??0.01	????2.8	??0.2	????0.2	??0.03	??280	??300	??7.5	??○	??○	??0.2	????0.2	??0.03	??265	??305	??8.2	??△	??○	??×	??△	??○	??△		??◎	??○	??◎	??○	??×	??△	??○	??○
??32	? 7.0	????2.8		??33	??1.0	??? 0.1	??0.2	????0.2	??0.03	??280	??300	??7.5	??○	??○	??0.2	????0.2	??0.03	??272	??298	??17.6	??△	??○	??×	??△	??○	??△	??◎	??○	??△	??◎	??○	??◎	??○	??○
??34	??1.0	??? 14.0		??33	??1.0	??? 0.1	??0.2	????0.2	??0.03	??335	??358	??4.1	??△	??○	??0.2	????0.2	??0.03	??272	??298	??17.6	??◎	??△	??△	??○	??△	??△	??◎	??○	??△	??◎	??○	??◎	??○	??○
??34	??1.0	??? 14.0		??35	??1.0	????2.8	??0.2	????0.2	??0.03	??335	??358	??4.1	??△	??○	? -	????0.2	??0.03	??285	??310	??10.6	??◎	??△	??△	??○	??△	??△	??◎	??○	??△	??◎	??○	??○	??◎	??◎
??36	??1.0	????2.8		??35	??1.0	????2.8	? 1.2	????0.2	??0.03	??358	??396	??12.6	??○	??○	? -	????0.2	??0.03	??285	??310	??10.6	??○	??○	??○	??○	??△	??○	??◎	??○	??△	??◎	??○	??○	??◎	??◎
??36	??1.0	????2.8		??37	??1.0	????2.8	? 1.2	????0.2	??0.03	??358	??396	??12.6	??○	??○	??0.2	??? -	??0.03	??290	??316	??13.1	??○	??○	??○	??○	??△	??○	??◎	??○	??◎	??◎	??◎	??◎	??◎	??△
??38	??1.0	????2.8		??37	??1.0	????2.8	??0.2	??? 4.0	??0.03	??390	??421	??10.6	??○	??○	??0.2	??? -	??0.03	??290	??316	??13.1	??◎	??◎	??◎	??◎	??△	??○	??◎	??○	??◎	??◎	??◎	??◎	??◎	??△
??38	??1.0	????2.8		??39	??1.0	????2.8	??0.2	??? 4.0	??0.03	??390	??421	??10.6	??○	??○	??0.2	????0.2	? -	??270	??295	??8.2	??◎	??◎	??◎	??◎	??△	??○	??△	??○	??◎	??△	??○	??○	??○	??○
??40	??1.0	????2.8		??39	??1.0	????2.8	??0.2	????0.2	??0.8	??305	??321	??14.6	??○	??○	??0.2	????0.2	? -	??270	??295	??8.2	??◎	??○	??△	??○	??△	??○	??△	??○	??◎	??△	??○	??○	??○	??○

Attached being illustrated in beyond the scope of the invention of rolling off the production line in the table.

Table 5

Alloy No. (IIA-n)		The chemical constitution of aluminium alloy (quality %) essentially consist: Mg:1.0, Si:2.8, Cu:0.2, Zn:0.2, Sr:0.03 all the other: Al and impurity	All characteristics
			All characteristics											Mechanical characteristics			Organize uniformity	Plastic working	Machinability	The wearing and tearing of instrument	The quality of finished surface	The cutting crackle	Solidity to corrosion	The surface passivation property handled
			0.2% yield strength N/mm ²	Tensile strength N/mm ²	Tension set %									Mechanical characteristics
			0.2% yield strength N/mm ²	Tensile strength N/mm ²	Tension set %	Invention	??41	????Ti：0.003	298	??319	??12.8	??◎	??○	??◎	??◎	??◎									??◎	??◎	??○
??42	????Ti：0.02	302	??320	??14.6	??◎		??41	????Ti：0.003	298	??319	??12.8	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??○		??◎	??◎	??○
??42	????Ti：0.02	302	??320	??14.6	??◎		??43	????Ti：0.3	308	??325	??13.1	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??○	??◎	??◎	??○
??44	????B：0.0005	302	??330	??15.1	??◎		??43	????Ti：0.3	308	??325	??13.1	??◎	??○	??◎	??◎	??◎	??◎	??◎	??○	??○	??◎	??◎	??◎	??◎	??◎	??○
??44	????B：0.0005	302	??330	??15.1	??◎		??45	????B：0.005	305	??320	??15.2	??◎	??◎	??◎	??○	??○	??◎	??◎	??○	??○	??◎	??◎	??◎	??◎	??◎	??◎
??46	????B：0.01	308	??329	??14.6	??◎		??45	????B：0.005	305	??320	??15.2	??◎	??◎	??◎	??○	??○	??○	??◎	??○	??○	??◎	??◎	??◎	??◎	??◎	??◎
??46	????B：0.01	308	??329	??14.6	??◎		??47	????C：0.01	305	??320	??15.1	??◎	??○	??◎	??◎	??◎	??○	??◎	??○	??○	??◎	??◎	??◎	??◎	??◎	??○
??48	????C：0.15	295	??315	??14.0	??◎		??47	????C：0.01	305	??320	??15.1	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??○	??◎	??◎	??○
??48	????C：0.15	295	??315	??14.0	??◎		??49	????Fe：0.05	285	??318	??16.2	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??○	??◎	??◎	??◎
??50	????Fe：0.2	296	??325	??15.1	??◎		??49	????Fe：0.05	285	??318	??16.2	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎
??50	????Fe：0.2	296	??325	??15.1	??◎		??51	????Fe：0.7	291	??323	??13.6	??○	??○	??◎	??○	??○	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??○	??○
??52	????Cr：0.03	305	??318	??14.1	??◎		??51	????Fe：0.7	291	??323	??13.6	??○	??○	??◎	??○	??○	??○	??◎	??◎	??○	??◎	??◎	??◎	??◎	??○	??○
??52	????Cr：0.03	305	??318	??14.1	??◎		??53	????Cr：0.2	302	??325	??16.2	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎
??54	????Cr：0.7	308	??330	??15.1	??○		??53	????Cr：0.2	302	??325	??16.2	??◎	??○	??◎	??◎	??◎	??○	??◎	??○	??◎	??◎	??○	??○	??◎	??◎	??◎
??54	????Cr：0.7	308	??330	??15.1	??○		??55	????Mn：0.1	309	??328	??14.6	??◎	??○	??◎	??◎	??◎	??○	??◎	??○	??◎	??◎	??○	??○	??◎	??◎	??◎
??56	????Mn：0.3	319	??338	??12.5	??◎		??55	????Mn：0.1	309	??328	??14.6	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎
??56	????Mn：0.3	319	??338	??12.5	??◎		??57	????Zr：0.1	310	??329	??13.6	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎
??58	????Zr：0.3	312	??329	??12.9	??◎		??57	????Zr：0.1	310	??329	??13.6	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎
??58	????Zr：0.3	312	??329	??12.9	??◎		??59	????Zr：0.7	309	??336	??14.9	??○	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??○	??○
??60	????V：0.1	296	??318	??10.2	??◎		??59	????Zr：0.7	309	??336	??14.9	??○	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??○	??○
??60	????V：0.1	296	??318	??10.2	??◎		??61	????V：0.3	296	??322	??11.2	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎

Table 6

Alloy No. (IIA-n)		The chemical constitution of aluminium alloy (quality %) essentially consist: Mg:1.0, Si:2.8, Cu:0.2, Zn:0.2, Sr:0.03 all the other: Al and impurity	All characteristics
			All characteristics											Mechanical characteristics			Organize uniformity	Plastic working	Machinability	The wearing and tearing of instrument	The quality of finished surface	The cutting crackle	Solidity to corrosion	The surface passivation property handled
			0.2% yield strength N/mm ²	Tensile strength N/mm ²	Rate % is stretched in the fracture court of a feudal ruler									Mechanical characteristics
			0.2% yield strength N/mm ²	Tensile strength N/mm ²	Rate % is stretched in the fracture court of a feudal ruler	Invention	????62	????Sc：0.07	??300	?325	14.6	?◎	?○	??◎	?◎	?◎									?◎	?◎	??○
????63	????Sc：0.16	??310	?330	13.1	?◎		????62	????Sc：0.07	??300	?325	14.6	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?◎	??○		?◎	?◎	??○
????63	????Sc：0.16	??310	?330	13.1	?◎		????64	????Ni：0.003	??302	?320	15.2	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?◎	??○	?◎	?◎	??○
????65	????Ni：0.2	??315	?340	11.6	?◎		????64	????Ni：0.003	??302	?320	15.2	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?◎	??○	?◎	?◎	??○
????65	????Ni：0.2	??315	?340	11.6	?◎		????66	????Ni：0.7	??318	?342	10.9	?○	?○	??◎	?◎	?○	?○	??◎	?◎	?◎	?◎	?◎	??○	?◎	?○	??○
????67	????Na：0.01	??300	?320	13.6	?◎		????66	????Ni：0.7	??318	?342	10.9	?○	?○	??◎	?◎	?○	?○	??◎	?◎	?◎	?◎	?◎	??○	?◎	?○	??○
????67	????Na：0.01	??300	?320	13.6	?◎		????68	????Na：0.1	??302	?328	13.1	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?◎	??○	?◎	?◎	??○
????69	????Sb：0.01	??305	?325	13.0	?◎		????68	????Na：0.1	??302	?328	13.1	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?◎	??○	?◎	?◎	??○
????69	????Sb：0.01	??305	?325	13.0	?◎		????70	????Sb：0.1	??304	?326	12.9	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?◎	??○	?◎	?◎	??○
????71	????Ca：0.01	??301	?322	14.6	?◎		????70	????Sb：0.1	??304	?326	12.9	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?◎	??○	?◎	?◎	??○
????71	????Ca：0.01	??301	?322	14.6	?◎		????72	????Ca：0.1	??298	?320	12.6	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?◎	??○	?◎	?◎	??○
????73	????Ca：0.3	??300	?325	12.4	?○		????72	????Ca：0.1	??298	?320	12.6	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?○	??○	?◎	?◎	??○
????73	????Ca：0.3	??300	?325	12.4	?○		????74	????Sn：0.05	??315	?335	13.2	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?○	??○	?◎	?◎	??◎
????75	????Sn：0.2	??308	?330	14.2	?◎		????74	????Sn：0.05	??315	?335	13.2	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?○	??○	?◎	?◎	??◎
????75	????Sn：0.2	??308	?330	14.2	?◎		????76	????Sn：0.4	??310	?328	13.9	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?○	??○	?◎	?○	??○
????77	????Bi：0.05	??305	?332	14.1	?◎		????76	????Sn：0.4	??310	?328	13.9	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?◎	??◎	?◎	?○	??○
????77	????Bi：0.05	??305	?332	14.1	?◎		????78	????Bi：0.2	??300	?326	14.8	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?◎	??◎	?◎	?◎	??○
????79	????Bi：0.4	??305	?328	12.9	?◎		????78	????Bi：0.2	??300	?326	14.8	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?○	??○	?◎	?◎	??○
????79	????Bi：0.4	??305	?328	12.9	?◎		????80	????In：0.01	??300	?320	16.2	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?○	??○	?◎	?◎	??◎
????81	????In：0.1	??302	?330	12.6	?◎		????80	????In：0.01	??300	?320	16.2	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?○	??○	?◎	?◎	??◎
????81	????In：0.1	??302	?330	12.6	?◎		????82	????In：0.3	??305	?328	14.1	?◎	?○	??◎	?◎	?◎	?○	??◎	?◎	?◎	?◎	?○	??○	?◎	?○	??○

Table 7

????No. ??(IIA-n)		The chemical constitution of aluminium alloy (quality %) essentially consist: Mg:1.0, Si:2.8, Cu:0.2, Zn:0.2, Sr:0.03 all the other: Al and impurity	All characteristics
			All characteristics											Mechanical characteristics			Organize uniformity	Plastic working	Machinability	The wearing and tearing of instrument	The quality of finished surface	The cutting crackle	Solidity to corrosion	The surface passivation property handled
			0.2% yield strength N/mm ²	Tensile strength N/mm ²	Tension set %									Mechanical characteristics
			0.2% yield strength N/mm ²	Tensile strength N/mm ²	Tension set %	Invention	??88	Ti：0.1、Fe：0.1	??306	????321	??12.6	?◎	?○	?◎	?◎	?◎									?◎	?◎	?○
??89	Ti：0.1、Mn：0.1	??302	????320	??12.8	?◎		??88	Ti：0.1、Fe：0.1	??306	????321	??12.6	?◎	?○	?◎	?◎	?◎	?○	?◎	?◎	?◎	?◎	?◎	?○		?◎	?◎	?○
??89	Ti：0.1、Mn：0.1	??302	????320	??12.8	?◎		??90	Ti：0.1、Cr：0.1	??310	????321	??10.9	?◎	?○	?◎	?◎	?◎	?○	?◎	?◎	?◎	?◎	?◎	?○	?◎	?◎	?○
??91	Cr：0.1、Ni：0.1	??308	????320	??11.6	?◎		??90	Ti：0.1、Cr：0.1	??310	????321	??10.9	?◎	?○	?◎	?◎	?◎	?○	?◎	?◎	?◎	?◎	?◎	?◎	?◎	?◎	?○
??91	Cr：0.1、Ni：0.1	??308	????320	??11.6	?◎		??92	Sn：0.3、Bi：0.1	??309	????330	??14.6	?◎	?○	?◎◎	?◎◎	?○	?○	?◎	?◎	?◎	?◎	?◎	?◎	?◎	?◎	?○
??93	Si：1.5、Sn：0.4、In：0.02????**	??298	????323	??12.9	?◎		??92	Sn：0.3、Bi：0.1	??309	????330	??14.6	?◎	?○	?◎◎	?◎◎	?○	?○	?◎◎	?◎◎	?○	?◎	?○	?○	?◎	?◎	?○
??93	Si：1.5、Sn：0.4、In：0.02????**	??298	????323	??12.9	?◎		??94	Si：0.8、Sn：0.5、Bi：0.5?????*	??289	????319	??11.6	?◎	?○	?◎	?◎	?○	?○	?◎◎	?◎◎	?○	?◎	?○	?○	?○	?○	?○
??95	Ti：0.1、Sn：0.1	??292	????320	??12.1	?◎		??94	Si：0.8、Sn：0.5、Bi：0.5?????*	??289	????319	??11.6	?◎	?○	?◎	?◎	?○	?○	?◎	?◎	?◎	?◎	?◎	?○	?○	?○	?○
??95	Ti：0.1、Sn：0.1	??292	????320	??12.1	?◎		??96	Fe：0.2、Cr：0.1	??299	????323	??14.6	?◎	?○	?◎	?◎	?◎	?○	?◎	?◎	?◎	?◎	?◎	?○	?◎	?◎	?○
??97	Si：1.5、Sn：0.3，In：0.05????**	??316	????331	??12.6	?◎		??96	Fe：0.2、Cr：0.1	??299	????323	??14.6	?◎	?○	?◎	?◎	?◎	?○	?◎◎	?◎◎	?◎	?◎	?○	?◎	?◎	?◎	?○
??97	Si：1.5、Sn：0.3，In：0.05????**	??316	????331	??12.6	?◎		??98	Fe：0.2、Ca：0.1	??301	????320	??13.9	?◎	?○	?◎	?◎	?◎	?○	?◎◎	?◎◎	?◎	?◎	?○	?◎	?◎	?◎	?○
??99	Ti：0.1、Fe：0.2、Cr：0.1	??302	????326	??14.1	?◎		??98	Fe：0.2、Ca：0.1	??301	????320	??13.9	?◎	?○	?◎	?◎	?◎	?○	?◎	?◎	?◎	?◎	?◎	?○	?◎	?◎	?○
??99	Ti：0.1、Fe：0.2、Cr：0.1	??302	????326	??14.1	?◎		??100	Fe：0.2、Zr：0.1、Ni：0.1	??300	????315	??10.6	?◎	?○	?◎	?◎	?◎	?○	?◎	?◎	?◎	?◎	?◎	?○	?◎	?◎	?○
??101	Fe：0.2、Zr：0.1，Bi：0.1	??305	????319	??10.8	?◎		??100	Fe：0.2、Zr：0.1、Ni：0.1	??300	????315	??10.6	?◎	?○	?◎	?◎	?◎	?○	?◎	?◎	?◎	?◎	?○	?○	?◎	?◎	?○
??101	Fe：0.2、Zr：0.1，Bi：0.1	??305	????319	??10.8	?◎		??102	Ti：0.1、Fe：0.2、Cr：0.1，Sb：0.05	??295	????322	??14.6	?◎	?○	?◎	?◎	?◎	?○	?◎	?◎	?◎	?◎	?○	?○	?◎	?◎	?○
??103	Ti：0.1、Fe：0.2、Mn：0.1，Cr：0.1	??290	????320	??15.1	?◎		??102	Ti：0.1、Fe：0.2、Cr：0.1，Sb：0.05	??295	????322	??14.6	?◎	?○	?◎	?◎	?◎	?○	?◎	?◎	?◎	?◎	?◎	?○	?◎	?◎	?○
??103	Ti：0.1、Fe：0.2、Mn：0.1，Cr：0.1	??290	????320	??15.1	?◎		??104	Ti：0.1、Fe：0.2、V：0.1，Ca：0.1，Sn：0.1	??295	????319	??14.0	?◎	?○	?◎	?◎	?◎	?○	?◎	?◎	?◎	?◎	?◎	?○	?◎	?○	?○
??105	C：0.1、Fe：0.2、Mn：0.1、Zr：0.1、Na：0.1	??290	????315	??12.6	?◎		??104	Ti：0.1、Fe：0.2、V：0.1，Ca：0.1，Sn：0.1	??295	????319	??14.0	?◎	?○	?◎	?◎	?◎	?○	?◎	?◎	?◎	?◎	?◎	?○	?◎	?○	?○
??105	C：0.1、Fe：0.2、Mn：0.1、Zr：0.1、Na：0.1	??290	????315	??12.6	?◎		??106	B：0.1、Fe：0.2、Mn：0.1、Zr：0.1、In：0.1	??286	????310	??12.1	?◎	?○	?◎	?◎	?◎	?○	?◎	?◎	?◎	?◎	?◎	?○	?◎	?○	?○
??107	B：0.1、Fe：0.2、Mn：0.1、Ni：0.1、In：0.1	??292	????318	??14.6	?◎		??106	B：0.1、Fe：0.2、Mn：0.1、Zr：0.1、In：0.1	??286	????310	??12.1	?◎	?○	?◎	?◎	?◎	?○	?◎	?◎	?◎	?◎	?○	?○	?◎	?○	?○
??107	B：0.1、Fe：0.2、Mn：0.1、Ni：0.1、In：0.1	??292	????318	??14.6	?◎		??108	Fe:0.2, B, Mn, Zr, Ni, Sb, In: each is 0.1 years old	??290	????320	??12.6	?◎	?○	?◎	?◎	?◎	?○	?◎	?◎	?◎	?◎	?○	?○	?◎	?○	?○

In the table, * represents that Si content is 0.8 quality %, and * * represents that Si content is 1.5 quality %, and Mg, Cu, Zn, Sr content are identical.

Table 8

Alloy No. (IIA-n)		The chemical constitution of aluminium alloy (quality %) essentially consist: Mg:1.0, Si:8, Cu:0.2, Zn:0.2, Sr:0.03 all the other: Al and impurity	All characteristics
			All characteristics											Mechanical characteristics			Organize uniformity	Plastic working	Machinability	The wearing and tearing of instrument	The quality of finished surface	The cutting crackle	Solidity to corrosion	The surface passivation property handled
			0.2% yield strength N/mm ²	Tensile strength N/mm ²	Tension set %									Mechanical characteristics
			0.2% yield strength N/mm ²	Tensile strength N/mm ²	Tension set %	Invention	??109	Ti：0.02	????302	??319	??11.6	??◎	??○	??◎	??◎	??◎									??◎	??◎	??○
??110	B：0.005	????302	??318	??10.9	??◎		??109	Ti：0.02	????302	??319	??11.6	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎		??◎	??◎	??○
??110	B：0.005	????302	??318	??10.9	??◎		??111	C：0.1	????298	??319	??12.1	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??○
??112	Fe：0.2	????302	??321	??12.0	??◎		??111	C：0.1	????298	??319	??12.1	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??○
??112	Fe：0.2	????302	??321	??12.0	??◎		??113	Cr：0.2	????303	??319	??10.1	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎
??114	Mn：0.1	????302	??322	??14.6	??◎		??113	Cr：0.2	????303	??319	??10.1	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎
??114	Mn：0.1	????302	??322	??14.6	??◎		??115	Zr：0.3	????305	??320	??13.6	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎
??116	V：0.1	????302	??319	??12.0	??◎		??115	Zr：0.3	????305	??320	??13.6	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎
??116	V：0.1	????302	??319	??12.0	??◎		??117	Sc：0.07	????305	??322	??11.8	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??◎	??○
??118	Ni：0.2	????300	??318	??10.1	??◎		??117	Sc：0.07	????305	??322	??11.8	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??○	??◎	??◎	??○
??118	Ni：0.2	????300	??318	??10.1	??◎		??119	Na：0.1	????305	??321	??13.9	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??○	??◎	??◎	??○
??120	Sb：0.1	????300	??322	??14.1	??◎		??119	Na：0.1	????305	??321	??13.9	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??○	??◎	??◎	??○
??120	Sb：0.1	????300	??322	??14.1	??◎		??121	Ca：0.1	????300	??320	??13.6	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??○	??◎	??◎	??○
??122	Sn：0.2	????308	??329	??13.2	??◎		??121	Ca：0.1	????300	??320	??13.6	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??○	??◎	??◎	??○
??122	Sn：0.2	????308	??329	??13.2	??◎		??123	Bi：0.2	????307	??320	??14.9	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??○	??◎	??○	??○
??124	In：0.1	????302	??318	??12.6	??◎		??123	Bi：0.2	????307	??320	??14.9	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??○	??○	??◎	??○	??○
??124	In：0.1	????302	??318	??12.6	??◎		??125	Ti：0.1、Fe：0.2	????298	??319	??10.6	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??○	??○	??◎	??◎	??○
??126	Ti：0.1、Ni：0.1	????297	??316	??10.1	??◎		??125	Ti：0.1、Fe：0.2	????298	??319	??10.6	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??○	??◎	??◎	??○
??126	Ti：0.1、Ni：0.1	????297	??316	??10.1	??◎		??127	Ti：0.03、Fe：0.2、Cr：0.1	????289	??316	??11.1	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??◎	??○	??◎	??○	??○
??128	B：0.1、Fe：0.2、Mn：0.1、Ni：0.1、In：0.1	????280	??314	??11.0	??◎		??127	Ti：0.03、Fe：0.2、Cr：0.1	????289	??316	??11.1	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??○	??○	??◎	??○	??○
??128	B：0.1、Fe：0.2、Mn：0.1、Ni：0.1、In：0.1	????280	??314	??11.0	??◎		??129	Fe:0.2, B, Mn, Zr, Ni, Sb, Sc: each is 0.1 years old	????282	??316	??10.9	??◎	??○	??◎	??◎	??◎	??○	??◎	??◎	??◎	??◎	??○	??○	??◎	??◎	??○

Table 9

	Casting condition a	Casting condition b
	Casting condition a	Casting condition b	The molten metal temperature	????730℃	????730℃
Cooling water inflow	40 liters/minute	40 liters/minute	The molten metal temperature	????730℃	????730℃
Cooling water inflow	40 liters/minute	40 liters/minute	The casting diameter	Diameter 120mm	Diameter 53mm
Casting speed	The 150mm/ branch	The 300mm/ branch	The casting diameter	Diameter 120mm	Diameter 53mm
Casting speed	The 150mm/ branch	The 300mm/ branch	Lubricating oil types	Viscotrol C	Viscotrol C
The lubricating oil feed rate	The 1cc/ branch	The 1cc/ branch	Lubricating oil types	Viscotrol C	Viscotrol C
The lubricating oil feed rate	The 1cc/ branch	The 1cc/ branch	The kind of gas	Air	Air
The flow of gas	0.5 rise/minute	0.5 rise/minute	The kind of gas	Air	Air
The flow of gas	0.5 rise/minute	0.5 rise/minute	The overhang of over-hang part (M)	????10mm	????10mm

Result by table 3～table 8 can confirm, the aluminium alloy that the present invention forms has uniformity, plastic working, machinability (quality, the cutting crackle that comprise finished surface), solidity to corrosion, the surface passivation property handled of excellent metal structure, the wearing and tearing of instrument in the time of can also suppressing to cut.

B. metal structure and creating conditions

From the alloy of above-mentioned composition, carry out the manufacturing test of aluminium alloy material with IIA-30 (table 4), IIA-127 (table 8).

For casting No.IIB-1,2,5, the casting of 6 usefulness vertical continuous casting methods, for casting No.IIB-3,4,7, the horizontal Continuous casting process casting of 8 usefulness.The casting material is all made section and is circular solid shape material (bar), and the details and the casting condition of casting are as described below.In addition, as a comparative example, make the method casting of casting No.IIB-9,10 usefulness die casts.

[vertical continuous casting]

Identical with the embodiment of the chemical constitution of the aluminium alloy of above-mentioned A., with gas-pressurization type insulation ring casting, make 2 kinds of solid shape materials that section is a circle with casting condition a shown in the table 9 and casting condition b.

[horizontal continuous-casting]

In horizontally continuously casting device shown in Figure 7, (20) are molds, and (21) are tundish, and (22) are the resistivity against fire conduits that molten metal is imported to mold (20) from tundish (21).In addition, (23), (24) are that regulation is from the resistivity against fire plate body of resistivity against fire conduit (22) to the opening footpath of the molten metal influx (32) of mold (20).

Above-mentioned mold (20) has the cyclic blank part (25) of heat-eliminating medium (C) portion's circulation within it that can make water etc., is formed with from a plurality of ejiction openings (26) of this blank part (25) to outside opening.And the heat-eliminating medium (C) that imports to blank part (25) by not shown ingress pipe cools off mold (20), and the casting material (S) that is shaped is once cooled off, and simultaneously by ejiction opening (26) ejection, casting material (S) is carried out secondary cool off.

In addition,, lubricating oil is imported in the supply passageway (28) by the outside, by means of the inwall (20a) of supplying with mold (20) by a plurality of supply tubules of ramose (29) in the supply passageway (28) by path (27).

In Fig. 7, the outlet of (31) expression tundish (21), (32) expression molten metal influx.

According to above-mentioned horizontally continuously casting device, can reach casting speed of the present invention and speed of cooling, can make casting material with excellent specific properties such as machinabilities.

Casting condition is got the casting condition c and the casting condition d of the table 10 of back, has made 2 kinds of sections and has been circular solid shape material.

Table 10

	Casting condition c	Casting condition d
	Casting condition c	Casting condition d	Molten metal temperature in the tundish	????730℃	????730℃
Cooling water inflow	8 liters/minute	2 liters/minute	Molten metal temperature in the tundish	????730℃	????730℃
Cooling water inflow	8 liters/minute	2 liters/minute	The casting diameter	Diameter 25mm	Diameter 10mm
Casting speed	The 800mm/ branch	The 3000mm/ branch	The casting diameter	Diameter 25mm	Diameter 10mm
Casting speed	The 800mm/ branch	The 3000mm/ branch	Lubricating oil types	Viscotrol C	Viscotrol C
The lubricating oil feed rate	0.2cc/ divide	0.2cc/ divide	Lubricating oil types	Viscotrol C	Viscotrol C
The lubricating oil feed rate	0.2cc/ divide	0.2cc/ divide	Molten metal flows into bore	????5mm	????5mm

[die cast]

The casting No.IIB-9, the 10th of comparative example, under the casting condition shown in the table 11 of back, the ingot casting that obtains by sand mold formula sample mold (ISO mold).

Casting No.IIB-1～the IIB-4, the section bar of IIB-9 of casting, after 170 ℃ * 11 hours ageing treatment, by peeling off the top layer that degree of depth 1.5mm is removed in processing, with it as the test material.In addition, the section bar of casting No.IIB-5～IIB-8, IIB-10 by peeling off after processing removes the top layer of degree of depth 1.5mm, carries out 170 ℃ * 11 hours ageing treatment, with it as the test material.

Observe the metal structure that these respectively test material, investigate the size (average skeleton line length L m, width average Wm, their ratio L/Wm) of particle distribution state in average DAS, the eutectic lamellar structure (median size of eutectic Si particle, eutectic Si particle with second population and the area ratio/occupancy ratio of particle) mutually, eutectic lamellar structure.The main points of creating conditions with each casting example are shown in Table 11 again, and the observations with metal structure also is shown in Table 11 simultaneously.

Table 11

Casting No. (IIB-n)		Alloy No.	Casting condition				Ageing treatment			Metal structure
			Casting condition				Ageing treatment			Metal structure						The forging type casting condition	Casting speed mm/ branch	Casting diameter mm	Speed of cooling ℃/minute	Temperature ℃	Time h	Average DAS μ m	The dispersion of particles state			The eutectic lamellar structure
			Median size μ m	Area ratio/occupancy ratio %	Particle several/mm ²	Average skeleton line length L m, μ m	Width average Wm, μ m	??L/Wm															The dispersion of particles state			The eutectic lamellar structure
			Median size μ m	Area ratio/occupancy ratio %	Particle several/mm ²	Average skeleton line length L m, μ m	Width average Wm, μ m	??L/Wm	Invention	????1	IIA-30	Perpendicular type, a	150	??120	?20								170	?11	??15.9	??0.78	??3.1	?2.7×10 ³	????42.4	????4.6	??9.2
????2	Perpendicular type, b	300	??53	?40	??20.4	??0.91	??2.9	?5.9×10 ³		????1		Perpendicular type, a	150	??120	?20	????50.6	????4.9	??10.3							??15.9	??0.78	??3.1	?2.7×10 ³	????42.4	????4.6	??9.2
????2	Perpendicular type, b	300	??53	?40	??20.4	??0.91	??2.9	?5.9×10 ³		????3		Level, d	3000	??10	?400	????50.6	????4.9	??10.3	??4.9	??0.45	??3.6	?2.9×10 ⁴			????49.5	????3.2	??15.5
????4	Level, c	800	??25	?100	??7.6	??0.50	??3.0	?1.8×10 ⁴		????3		Level, d	3000	??10	?400	????44.6	????3.9	??11.4	??4.9	??0.45	??3.6	?2.9×10 ⁴			????49.5	????3.2	??15.5
????4	Level, c	800	??25	?100	??7.6	??0.50	??3.0	?1.8×10 ⁴		????5		IIA-127	Perpendicular type, a	150	??120	????44.6	????3.9	??11.4	?20	??8.7	??1.02	??7.5			?2.7×10 ⁴	????108.6	????4.1	??26.5
????6	Perpendicular type, b	300	??53	?40	??12.4	??1.55	??7.7	?2.7×10 ⁴		????5	????12.4		Perpendicular type, a	150	??120	????5.3	??21.2		?20	??8.7	??1.02	??7.5			?2.7×10 ⁴	????108.6	????4.1	??26.5
????6	Perpendicular type, b	300	??53	?40	??12.4	??1.55	??7.7	?2.7×10 ⁴		????7	????12.4		Level, d	3000	??10	????5.3	??21.2	?400	??4.5	??0.65	??6.9	?2.7×10 ⁴			????70.2	????4.1	??17.1
????8	Level, c	800	??25	?100	??7.2	??1.01	??7.6	?2.7×10 ⁴		????7	????88.6		Level, d	3000	??10	????3.7	??23.9	?400	??4.5	??0.65	??6.9	?2.7×10 ⁴			????70.2	????4.1	??17.1
????8	Level, c	800	??25	?100	??7.2	??1.01	??7.6	?2.7×10 ⁴		Relatively	????88.6		????9	IIA-30	The gold type	????3.7	??23.9	10	??200	? 0.5	170	?11			??22.7	? 6.20	??4.2	?3.5×10 ²	????10.3	????2.1	??4.9
???10	IIA-127	The gold type	10	??200	? 0.5	??16.2	? 7.22	??9.5	?2.5×10 ²		????15.5	????4.6	????9	IIA-30	The gold type	??3.4		10	??200	? 0.5					??22.7	? 6.20	??4.2	?3.5×10 ²	????10.3	????2.1	??4.9

Have being illustrated in beyond the scope of the present invention of rolling off the production line in the table.

Respectively test material to what make, the mechanical characteristics of the yield strength of mensuration 0.2%, tensile strength, tension set, use simultaneously and method that the test of above-mentioned alloy composition is same, carried out quality, the cutting crackle of wearing and tearing, the finished surface of castibility, machinability, instrument, the test of solidity to corrosion projects.In addition, having or not with quantity of subsurface defect also carried out relative evaluation.In addition, estimated integrated quality as the alloy material.The relative evaluation of 4 grades stating is taken off in evaluation.In addition, in this test, mechanical characteristics is also got relative evaluation.

◎: good

Zero: more excellent

△: relatively poor

*: poor

Table 12

Casting No. (IIB-n)		Mechanical characteristics	The productivity castibility	Machinability	The wearing and tearing of instrument	The quality of finished surface	The cutting crackle	Solidity to corrosion	Subsurface defect	Comprehensive evaluation
Casting No. (IIB-n)		Mechanical characteristics	The productivity castibility	Machinability	The wearing and tearing of instrument	The quality of finished surface	The cutting crackle	Solidity to corrosion	Subsurface defect	Comprehensive evaluation	Invention	????1	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎
????2	????◎	????○	????○	????◎	????◎	????◎	????○	????◎	????○			????1	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎
????2	????◎	????○	????○	????◎	????◎	????◎	????○	????◎	????○	????3		????○	????○	????◎	????◎	????◎	????◎	????○	????◎	????○
????4	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????3		????○	????○	????◎	????◎	????◎	????◎	????○	????◎	????○
????4	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????5		????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎
????6	????○	????◎	????○	????◎	????◎	????◎	????○	????◎	????○	????5		????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎
????6	????○	????◎	????○	????◎	????◎	????◎	????○	????◎	????○	????7		????◎	????○	????◎	????◎	????◎	????◎	????◎	????◎	????○
????8	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????7		????◎	????○	????◎	????◎	????◎	????◎	????◎	????◎	????○
????8	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎	????◎	Relatively		????9	????△	????△	????×	????△	????×	????△	????△	????×	????×
????10	????×	????△	????×	????△	????×	????△	????△	????×	????×			????9	????△	????△	????×	????△	????×	????△	????△	????×	????×

Result by table 12 can confirm, aluminium alloy material with method manufacturing of the present invention, in metal structure, have Si particle dispersive eutectic lamellar structure imperceptibly, by this, have excellent machinability (quality, the cutting crackle that comprise finished surface), solidity to corrosion.Can confirm,, can obtain excellent machinability, can also suppress the wearing and tearing of instrument simultaneously particularly by the eutectic lamellar structure of regulation.C. ageing treatment and post forming processing

As cast material, identical with the embodiment of the chemical constitution of the aluminium alloy of above-mentioned A. with IIA-30 and IIA-127, with gas-pressurization type insulation ring casting, the section of making diameter 53mm with the casting condition b shown in the table 7 is the solid shape material of circle.For the solid shape material of casting, make skin section remove part by the processing that strips off the skin until degree of depth 1.5mm, implement ageing treatment under the conditions shown in Table 13.In addition, in handling No.IIC-5～IIC-8, IIC-13～IIC-16, implement drawing processing with temperature shown in the table 13 and relative reduction in area.For whole processing samples, can carry out drawing well.

Respectively test material to what make, measure the mechanical characteristics of 0.2% yield strength, tensile strength, tension set, estimated machinability, the wearing and tearing of instrument, the quality of finished surface, cutting crackle, solidity to corrosion, impact characteristics simultaneously.Impact characteristics is tested with following method, and the test method of sundry item and the test of above-mentioned alloy composition are adopted and used the same method, and carry out relative evaluation with following 4 grades.In addition, in this test, mechanical characteristics is also carried out relative evaluation.

◎: good

Zero: more excellent

△: relatively poor

*: poor

[impact characteristics]

Carry out the shock test of metallic substance according to JIS Z2202 and JIS Z2242, estimate impact characteristics with summer formula impact value.

Table 13

Handle No. (IIC-n)		Alloy No	Ageing treatment		Drawing processing		All characteristics
			Ageing treatment		Drawing processing		All characteristics							Temperature ℃	Time h	Temperature ℃	Relative reduction in area %	Mechanical characteristics	Machinability	The wearing and tearing of instrument	The quality of surface working	The cutting crackle	Solidity to corrosion	Impact characteristics
			Invention	?1	IIA-30	??170	????11	-	?-	?◎	??◎	??○	??◎	Temperature ℃	Time h	Temperature ℃	Relative reduction in area %	Mechanical characteristics	Machinability	The wearing and tearing of instrument	The quality of surface working	The cutting crackle	Solidity to corrosion	Impact characteristics	??◎	??○	○
?2	IIA-30	??160		?1	IIA-30	??170	????11	-	?-	?◎	??◎	??○	??◎	????6	-	?-	?○	??○	??○	??○	??◎	??○	○		??◎	??○	○
?2	IIA-30	??160		?3	IIA-30	??160	????15	-	?-	?◎	??◎	??○	??◎	????6	-	?-	?○	??○	??○	??○	??◎	??○	○	??◎	??○	○
?4	IIA-30	??200		?3	IIA-30	??160	????15	-	?-	?◎	??◎	??○	??◎	????7	-	?-	?◎	??◎	??○	??◎	??◎	??○	○	??◎	??○	○
?4	IIA-30	??200		?5	IIA-30	??160	????9	Normal temperature	?5	?◎	??◎	??○	??◎	????7	-	?-	?◎	??◎	??○	??◎	??◎	??○	○	??◎	??○	○
?6	IIA-30	??160		?5	IIA-30	??160	????9	Normal temperature	?5	?◎	??◎	??○	??◎	????8	Normal temperature	?10	?◎	??◎	??○	??◎	??◎	??○	○	??◎	??○	○
?6	IIA-30	??160		?7	IIA-30	??170	????7	Normal temperature	?10	?◎	??◎	??○	??◎	????8	Normal temperature	?10	?◎	??◎	??○	??◎	??◎	??○	○	??◎	??○	○
?8	IIA-30	??200		?7	IIA-30	??170	????7	Normal temperature	?10	?◎	??◎	??○	??◎	????4	Normal temperature	?10	?◎	??◎	??○	??◎	??◎	??○	○	??◎	??○	○
?8	IIA-30	??200		?9	IIA-127	??170	????11	-	?-	?◎	??◎	??○	??◎	????4	Normal temperature	?10	?◎	??◎	??○	??◎	??◎	??○	○	??◎	??○	○
?10	IIA-127	??160		?9	IIA-127	??170	????11	-	?-	?◎	??◎	??○	??◎	????6	-	?-	?◎	??◎	??○	??◎	??◎	??○	○	??◎	??○	○
?10	IIA-127	??160		?11	IIA-127	??160	????15	-	?-	?○	??○	??○	??○	????6	-	?-	?◎	??◎	??○	??◎	??◎	??○	○	??◎	??○	○
?12	IIA-127	??200		?11	IIA-127	??160	????15	-	?-	?○	??○	??○	??○	????7	-	?-	?◎	??◎	??○	??◎	??◎	??○	○	??◎	??○	○
?12	IIA-127	??200		?13	IIA-127	??160	????9	Normal temperature	?5	?◎	??◎	??○	??◎	????7	-	?-	?◎	??◎	??○	??◎	??◎	??○	○	??◎	??○	○
?14	IIA-127	??160		?13	IIA-127	??160	????9	Normal temperature	?5	?◎	??◎	??○	??◎	????8	Normal temperature	?10	?◎	??◎	??○	??◎	??◎	??○	○	??◎	??○	○
?14	IIA-127	??160		?15	IIA-127	??170	????7	Normal temperature	?10	?◎	??◎	??○	??◎	????8	Normal temperature	?10	?◎	??◎	??○	??◎	??◎	??○	○	??◎	??○	○
?16	IIA-127	??200		?15	IIA-127	??170	????7	Normal temperature	?10	?◎	??◎	??○	??◎	????4	Normal temperature	?10	?◎	??◎	??○	??◎	??◎	??○	○	??◎	??○	○
?16	IIA-127	??200		Relatively	?17	IIA-30	? 310	????1	-	?-	?×	??△	??○	????4	Normal temperature	?10	?◎	??◎	??○	??◎	??◎	??○	○	??△	??○	??△	△
?18	IIA-30	??160	??? 105		?17	IIA-30	? 310	????1	-	?-	?×	??△	??○	-	?-	?×	??△	??○	??△	??○	??△	△		??△	??○	??△	△
?18	IIA-30	??160	??? 105		?19	IIA-127	? 310	????1	-	?-	?×	??△	??○	-	?-	?×	??△	??○	??△	??○	??△	△	??△	??○	??△	△
?20	IIA-127	??160	??? 105		?19	IIA-127	? 310	????1	-	?-	?×	??△	??○	-	?-	?×	??△	??○	??△	??○	??△	△	??△	??○	??△	△

Result by table 13 can confirm, by the casting material is implemented ageing treatment with condition of the present invention, excellent mechanical characteristics, machinability (quality, the cutting crackle that comprise finished surface), solidity to corrosion, impact characteristics can be obtained, the wearing and tearing of instrument can be suppressed simultaneously.In addition, can confirm,, all characteristics, particularly machinability are formed with reducing by under condition of the present invention, carrying out post forming processing.

Here, employed term and expression are explanation usefulness, rather than be used for making an explanation limitedly, neither get rid of shown in constituting here and any equipollent of described various features, also it must be understood that the various modification of allowing in claim scope of the present invention.

Utilizability on the industry

As mentioned above, the excellent in machinability of aluminium alloy material of the present invention, thereby be applicable to be attended by the manufactured materials of the various parts of machining. In addition, do not contain harmful Pb, thereby environment is not had harmful effect yet, cyclicity is also good, thereby from the viewpoint of the environment of preserving our planet, also is excellent material.

Claims

1. an aluminium alloy is characterized in that, contains Mg:0.3～6 quality %, Si:0.3～10 quality %, Zn:0.05～1 quality % and Sr:0.001～0.3 quality %, and all the other are made of Al and impurity.

2. aluminium alloy according to claim 1, Mg content are 0.5～1.1 quality %.

3. aluminium alloy according to claim 1 and 2, Si content are 1.5～5 quality %.

4. according to each described aluminium alloy of claim 1～3, Zn content is 0.1～0.3 quality %.

5. according to each described aluminium alloy of claim 1～4, Sr content is 0.005～0.05 quality %.

6. an aluminium alloy is characterized in that, contains Mg:0.3～6 quality %, Si:0.3～10 quality %, Zn:0.05～1 quality % and Sr:0.001～0.3 quality %,

In addition, as the interpolation element of selecting contain from Cu:0.01 quality % or the above less than 1 quality % of 0.01 quality %, Fe:0.01～1 quality %, Mn:0.01～1 quality %, Cr:0.01～1 quality %, Zr:0.01～1 quality %, Ti:0.01～1 quality %, Na:0.001～0.5 quality %, Ca:0.001～0.5 quality %, select more than a kind or a kind, all the other are made of Al and impurity.

7. aluminium alloy according to claim 6, Mg content are 0.5～1.1 quality %.

8. according to claim 6 or 7 described aluminium alloys, Si content is 1.5～5 quality %.

9. according to each described aluminium alloy of claim 6～8, Zn content is 0.1～0.3 quality %.

10. according to each described aluminium alloy of claim 6～9, Sr content is 0.005～0.05 quality %.

11. according to each described aluminium alloy of claim 6～10, the interpolation element of selection is Cu.

12. according to each described aluminium alloy of claim 6～10, the interpolation element of selection is Fe.

13. according to each described aluminium alloy of claim 6～10, the interpolation element of selection be among Cr, the Mn more than a kind or a kind.

14. according to each described aluminium alloy of claim 6～10, the interpolation element of selection is Zr.

15. according to each described aluminium alloy of claim 6～10, the interpolation element of selection is Ti.

16. according to each described aluminium alloy of claim 6～10, the interpolation element of selection be among Na, the Ca more than a kind or a kind.

17. according to each described aluminium alloy of claim 6～11, the content of Cu is 0.1～0.3 quality %.

18. according to claim 6～10,12, each described aluminium alloy of 17, the content of Fe is 0.1～0.3 quality %.

19. according to claim 6～10,13,17, each described aluminium alloy of 18, the content of Mn is 0.1～0.3 quality %.

20. according to claim 6～10,13, each described aluminium alloy of 17～19, the content of Cr is 0.1～0.3 quality %.

21. according to claim 6～10,14, each described aluminium alloy of 17～20, the content of Zr is 0.1～0.3 quality %.

22. according to each described aluminium alloy of claim 6～1 0,15,17～21, the content of Ti is 0.1～0.3 quality %.

23. according to claim 6～10, each described aluminium alloy of 16～22, the content of Na is 0.005～0.3 quality %.

24. according to claim 6～10, each described aluminium alloy of 16～23, the content of Ca is 0.005～0.3 quality %.

25. an aluminium alloy material is characterized in that, on chemical constitution, is made of any aluminium alloy of 1～24 of claim the;

On alloy structure, the median size of Si particle is 1～5 μ m, and the average line of apsides ratio of Si particle is 1～3 simultaneously.

26. aluminium alloy material according to claim 25, the median size of above-mentioned Si particle are 3 μ m or below the 3 μ m.

27. according to claim 25 or 26 described aluminium alloy materials, the average line of apsides ratio of above-mentioned Si particle is below 2 or 2.

28. the manufacture method of an aluminium alloy material, it is characterized in that, make the blank that any aluminium alloy by 1～24 of claim the constitutes with the casting speed of 10～180mm/min, above-mentioned blank is kept down carrying out more than 6 hours or 6 hours after homogenizing handles at 400～570 ℃, 300～550 ℃ of blank temperature, extruded product speed 0.5～100m/min, be squeezed into needed shape under the condition of extrusion ratio 10～200, this squeeze wood is kept carrying out more than 1 hour or 1 hour solution treatment down at 400～570 ℃, keep carrying out in 1～30 hour ageing treatment down at 90～300 ℃ again.

29. the manufacture method of aluminium alloy material according to claim 28, above-mentioned casting speed is 30～130mm/min.

30. according to the manufacture method of claim 28 or 29 described aluminium alloy materials, above-mentioned homogenizing is handled at 500～545 ℃ and is kept down more than 10 hours or 10 hours and carry out.

31., carry out under the above-mentioned condition that is squeezed in 350～500 ℃ of blank temperature, extruded product speed 2～30m/min, extrusion ratio 20～85 according to the manufacture method of each described aluminium alloy material of claim 28～30.

32. according to the manufacture method of each described aluminium alloy material of claim 28～31, above-mentioned solution treatment keeps down more than 3 hours or 3 hours and carries out at 500～545 ℃.

33. according to the manufacture method of each described aluminium alloy material of claim 28～32, above-mentioned ageing treatment kept 3～20 hours down and carries out at 140～200 ℃.

34. according to the manufacture method of each described aluminium alloy material of claim 28～33, carry out the drawing of the shape of being wanted with 5～30% relative reduction in area, carry out above-mentioned ageing treatment then for the squeeze wood after the above-mentioned solution treatment.

35. the manufacture method of aluminium alloy material according to claim 34, the relative reduction in area of above-mentioned drawing is 10～20%.

36. aluminium alloy, it is characterized in that, contain Mg:0.1～6 quality %, Si:0.3～12.5 quality %, Cu:0.01 quality % or 0.01 quality % above less than 1 quality %, Zn:0.01～3 quality % and Sr:0.001～0.5 quality %, all the other are made of Al and impurity.

37. aluminium alloy according to claim 36, Mg content are 0.3～5 quality %.

38. according to claim 36 or 37 described aluminium alloys, Si content is 0.8～12 quality %.

39. according to each described aluminium alloy of claim 36～38, Cu content is 0.1～0.8 quality %.

40. according to each described aluminium alloy of claim 36～39, Zn content is 0.05～1.5 quality %.

41. according to each described aluminium alloy of claim 36～40, Sr content is 0.005～0.3 quality %.

42. an aluminium alloy is characterized in that, contains the above less than 1 quality % of Mg:0.1～6 quality %, Si:0.3～12.5 quality %, Cu:0.01 quality % or 0.01 quality %, Zn:0.01～3 quality % and Sr:0.001～0.5 quality %,

In addition, contain from Ti:0.001～1 quality % as the interpolation element of selecting, B:0.0001～0.03 quality %, C:0.0001～0.5 quality %, Fe:0.01～1 quality %, Cr:0.01～1 quality %, Mn:0.01～1 quality %, Zr:0.01～1 quality %, V:0.01～1 quality %, Sc:0.0001～0.5 quality %, Ni:0.005～1 quality %, Na:0.001～0.5 quality %, Sb:0.001～0.5 quality %, Ca:0.001～0.5 quality %, Sn:0.01～1 quality %, Bi:0.01～1 quality %, select among In:0.001～0.5 quality % more than a kind or a kind, all the other are made of Al and impurity.

43. according to the described aluminium alloy of claim 42, Mg content is 0.3～5 quality %.

44. according to claim 42 or 43 described aluminium alloys, Si content is 0.8～12 quality %.

45. according to each described aluminium alloy of claim 42～44, Cu content is 0.1～0.8 quality %.

46. according to each described aluminium alloy of claim 42～45, Zn content is 0.05～1.5 quality %.

47. according to each described aluminium alloy of claim 42～46, Sr content is 0.005～0.03 quality %.

48. according to the described aluminium alloy of claim 42～47, the interpolation element of selection be among Ti, B, C, the Sc more than a kind or a kind.

49. according to the described aluminium alloy of claim 42～47, the interpolation element of selection is Fe.

50. according to the described aluminium alloy of claim 42～47, the interpolation element of selection be among Cr, the Mn more than a kind or a kind.

51. according to the described aluminium alloy of claim 42～47, the interpolation element of selection be among Zr, the V more than a kind or a kind.

52. according to the described aluminium alloy of claim 42～47, the interpolation element of selection is Ni.

53. according to the described aluminium alloy of claim 42～47, the interpolation element of selection be among Na, Sb, the Ca more than a kind or a kind.

54. according to the described aluminium alloy of claim 42～47, the interpolation element of selection be among Sn, Bi, the In more than a kind or a kind.

55. according to each described aluminium alloy of claim 42～48, the content of Ti is 0.003～0.5 quality %.

56. according to claim 42～48, each described aluminium alloy of 55, the content of B is 0.0005～0.01 quality %.

57. according to claim 42～48,55, each described aluminium alloy of 56, the content of C is 0.001～0.3 quality %.

58. according to claim 42～47,49, each described aluminium alloy of 55～57, the content of Fe is 0.05～0.7 quality %.

59. according to claim 42～47,50, each described aluminium alloy of 55～58, the content of Cr is 0.03～0.7 quality %.

60. according to claim 42～47,50, each described aluminium alloy of 55～59, the content of Mn is 0.03～0.7 quality %.

61. according to claim 42～47,51, each described aluminium alloy of 55～60, the content of Zr is 0.03～0.7 quality %.

62., it is characterized in that the content of V is 0.03～0.7 quality % according to claim 42～47,51, each described aluminium alloy of 55～61.

63. according to claim 42～48, each described aluminium alloy of 55～62, the content of Sc is 0.01～0.3 quality %.

64. according to claim 42～47,52, each described aluminium alloy of 55～63, the content of Ni is 0.03～0.7 quality %.

65. according to claim 42～47,53, each described aluminium alloy of 55～64, the content of Na is 0.005～0.3 quality %.

66. according to claim 42～47,53, each described aluminium alloy of 55～65, the content of Sb is 0.005～0.3 quality %.

67. according to claim 42～47,53, each described aluminium alloy of 55～66, the content of Ca is 0.005～0.3 quality %.

68. according to claim 42～47, each described aluminium alloy of 54～67, the content of Sn is 0.05～0.5 quality %.

69. according to claim 42～47, each described aluminium alloy of 54～68, the content of Bi is 0.05～0.5 quality %.

70. according to claim 42～47, each described aluminium alloy of 54～69, the content of In is 0.01～0.3 quality %.

71. an aluminium alloy material is characterized in that, on chemical constitution, is made of each described aluminium alloy of claim the 36～70;

On alloy structure, average dendritic arm spacing is 1～200 μ m, on the border of dendritic crystal, second particle mutually that contains the eutectic Si particle of median size 0.01～5 μ m and other, the average skeleton line length (Lm) of its length direction at 0.5 μ m or more than the 0.5 μ m, width average (Wm) forms netted at 0.5 μ m or the eutectic lamellar structure more than the 0.5 μ m.

72. according to the described aluminium alloy material of claim 71, in above-mentioned eutectic lamellar structure, above-mentioned eutectic Si particle and other second mutually particle amount to and have 500/mm ²Or 500/mm ²More than, and the area ratio/occupancy ratio of these particles is 0.1～50%.

73. according to claim 71 or 72 described aluminium alloy materials, above-mentioned average dendritic arm spacing is 3～100 μ m.

74. according to each described aluminium alloy material of claim 71～73, the median size of above-mentioned eutectic Si particle is 0.1～3 μ m.

75. according to each described aluminium alloy material of claim 71～74, the average skeleton line length (Lm) of above-mentioned eutectic lamellar structure is that 3 μ m or 3 μ m are above, width average (Wm) is 1 μ m or more than the 1 μ m.

76. according to each described aluminium alloy material of claim 71～75, the average specific (L/Wm) of the skeleton line length of above-mentioned eutectic lamellar structure and width is more than 3 or 3.

77. according to the described aluminium alloy material of claim 72～76, above-mentioned eutectic Si particle and other second mutually particle amount to and have 1000/mm ²Or 1000/mm ²More than.

78. according to the described aluminium alloy material of claim 72～77, it is characterized in that, above-mentioned eutectic Si particle and other second mutually the area ratio/occupancy ratio of particle be 0.3～40%.

79. the manufacture method of an aluminium alloy material, it is characterized in that, each described aluminium alloy of claim the 36～70 is remained on solidus temperature or the molten metal more than the solidus temperature, be continuously cast into the section bar of required section form with the casting speed of 30～5000mm/min, 10～600 ℃/second speed of cooling, keep implementing in 0.5～100 hour ageing treatment down at 100～300 ℃ then.

80. according to the manufacture method of the described aluminium alloy material of claim 79, above-mentioned casting speed is 100～2000mm/ branch.

81. the manufacture method according to claim 79 or 80 described aluminium alloy materials is characterized in that, above-mentioned speed of cooling is 30～300 ℃/second.

82. according to the manufacture method of each described aluminium alloy material of claim 79～81, above-mentioned ageing treatment kept 1～30 hour down and carries out at 120～220 ℃.

83. according to the manufacture method of each described aluminium alloy material of claim 79～82, above-mentioned section bar is the solid shape material.

84. according to the manufacture method of each described aluminium alloy material of claim 79～83, above-mentioned section bar is external with the circle of diameter 10～150mm on section.

85. according to the manufacture method of each described aluminium alloy material of claim 79～84, for the section bar after the continuous casting, the part of removing skin depth 0.1～10mm.

86. the manufacture method of 5 described aluminium alloy materials according to Claim 8, the amount of removing on above-mentioned top layer is the degree of depth 0.2～5mm.

87. according to the manufacture method of each described aluminium alloy material of claim 79～86, for the section bar after the continuous casting, under the temperature below 400 ℃ or 400 ℃, the post forming that carries out relative reduction in area and be 30% or 30% below is processed.

88. the manufacture method of 7 described aluminium alloy materials according to Claim 8, above-mentioned processing temperature is below 250 ℃ or 250 ℃.

89. the manufacture method of 7 or 88 described aluminium alloy materials according to Claim 8, above-mentioned relative reduction in area is below 20% or 20%.