CN110373583A - A kind of quality oxide effect high strength alumin ium alloy and preparation method thereof - Google Patents
A kind of quality oxide effect high strength alumin ium alloy and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
Abstract
The present invention relates to non-ferrous metal technical fields, disclose a kind of quality oxide effect high strength alumin ium alloy, component including following mass percent: Si is 0.50~0.60%, Mg is 2.2~2.8%, Fe≤0.20%, and Cu is 0.55~0.75%, Cr≤0.01%, Mn≤0.30%, Ti≤0.03%, surplus Al；It also discloses preparation method: aluminium ingot heating being added into magnesium ingot and intermediate alloy, obtains aluminum alloy melt I；Refining agent is added into aluminum alloy melt I, then is passed through argon gas and aluminum alloy melt I is refined, obtains aluminum alloy melt II；Aluminum alloy melt II is put into chute, grain refiner is added and carries out online crystal grain refinement processing, obtain aluminum alloy melt III；Aluminum alloy melt III is cast under the conditions of 680~730 DEG C, obtains aluminium alloy cast ingot A；Aluminium alloy cast ingot A is subjected to segmentation multistage uniformization processing, obtains extruding aluminium alloy C；Aluminium alloy C is subjected to artificial aging processing.The present invention, yield strength is big, reaches 400MPa or more, and oxidation binding force of membrane is strong, oxidation effectiveness is high-quality.
Description
Technical field
The present invention relates to non-ferrous metal technical field, specifically a kind of quality oxide effect high strength alumin ium alloy and its preparation side
Method.
Background technique
Aluminium alloy is the alloy that other elements composition is added based on aluminium, it is small with specific gravity, intensity is high, it is corrosion-resistant,
The advantages that electrical and thermal conductivity is good, environmentally friendly and recoverable, it has also become one of most commonly used material of daily use.
In recent years, explosive growth slim structure, dexterous design, high face value high intensity is presented in 3C Product, is 3C Product
Persevering pursuit.In computer and communications industry, with the application of wireless charging and 5G technology, aluminium alloy is widely applied
The frame or backboard of structure function.Such as mobile phone center, with the application of wireless charging and 5G technology, size is more and more thinner,
Reach 1-3mm width, to the resistance to deformation of material and prevents the requirement for falling damage higher and higher.3C commercial aluminum alloys are main at present
There are 5 systems (Al-Mg) aluminium alloy, 6 systems (Al-Mg-Si) aluminium alloy, 7 systems (Al-Zn-Mg) aluminium alloy.
Wherein 5 line aluminium alloys belong to heat treatment can not reinforced aluminium alloy, when cold deformation is small, yield strength is low about
200MPa or so, if cold deformation is big, yield strength can be improved to 260MPa or so, but a large amount of cold deformation is led
Material internal crystal grain is caused to extend along machine direction, striated is presented in anodic oxidation rear surface, influences product appearance.6 are in alloy,
It is often used 6063,6061,6013 modified alloy, belonging to heat treatment can reinforced alloys.It is main alloy element Mg2Si in aluminium by 6
Maximum solid solution degree in alloy influences, it is impossible to unlimited addition.At present commercialization 6 be alloy yield strength highest can obtain 350MPa with
It is interior.7 line aluminium alloy category high-strength alloys, due to total amount of compound is high in 7 line aluminium alloys and main alloy phase MgZn2 not
It is corrosion-resistant, it is at high cost in process.And the binding force of oxidation film and matrix is not strong, and product often occurs in use
There is situations such as appearance damage in spalling of oxide film, and user is caused greatly to complain.Therefore, market demand yield strength reaches 400MPa
More than, oxidation binding force of membrane is strong, the good aluminum alloy materials of oxidation effectiveness, and then is widely applied to require beautiful and high structure strong
In the 3C Product of degree.
Summary of the invention
It is above-mentioned to solve the purpose of the present invention is to provide a kind of quality oxide effect high strength alumin ium alloy and preparation method thereof
The problem of proposing in background technique: 7 line aluminium alloy anode oxide films are not strong, not corrosion-resistant with basal body binding force, processed at its
It is at high cost in journey；6 line aluminium alloy intensity are not high enough；There is striped after 5 line aluminium alloy intensity are low and anodic oxidation.
To achieve the above object, the invention provides the following technical scheme:
A kind of quality oxide effect high strength alumin ium alloy, the component including following mass percent: Si is 0.50~0.60%,
Mg be 2.2~2.8%, Fe≤0.20%, Cu be 0.55~0.75%, Mn≤0.30%, Cr≤0.01%, Ti≤0.03%,
Surplus is Al.
As a further solution of the present invention: the component including following mass percent: Si is that 0.50~0.60%, Mg is
It is 0.05~0.20%, Cr≤0.01% that 2.5~2.7%, Fe≤0.15%, Cu, which are 0.60~0.70%, Mn, Ti≤
0.03%, surplus Al.
As a further solution of the present invention: other single impurity element≤0.05% in the aluminium alloy.
A kind of preparation method of quality oxide effect high strength alumin ium alloy, which comprises the steps of:
(1) it stocks up according to above-mentioned mass percent, wherein aluminium and magnesium use aluminium ingot and magnesium ingot；
(2) aluminium ingot is heated to 730~780 DEG C to melt, adds magnesium ingot and intermediate alloy, stirring fusing obtains
Aluminum alloy melt I；
(3) refining agent is added into aluminum alloy melt I, then is passed through argon gas and aluminum alloy melt I is refined, skims, stand, obtain
To aluminum alloy melt II；
(4) aluminum alloy melt II is put into chute, adds grain refiner and carries out online crystal grain refinement processing, obtain aluminium conjunction
Golden liquid III；
(5) aluminum alloy melt III is cast under the conditions of 680~730 DEG C, obtains aluminium alloy cast ingot A；
(6) aluminium alloy cast ingot A is subjected to segmentation multistage uniformization processing, obtains aluminium alloy cast ingot B；
(7) aluminium alloy cast ingot B is heated to 500~550 DEG C of progress extrusion moldings, extruded product is solid material, then is carried out
Water quenching is worn online, obtains extruding aluminium alloy C；
(8) aluminium alloy C is subjected to artificial aging processing, obtains the quality oxide effect high strength alumin ium alloy.
As a further solution of the present invention: in step (6), being segmented the step of multistage uniformization is handled are as follows: first from room temperature
It is warming up to 400~440 DEG C and keeps the temperature 2~4 hours, then heat to 550~575 DEG C and keep the temperature 12~24 hours, be cooled to room temperature.
As a further solution of the present invention: in step (7), extrusion ratio when extrusion molding is 30~80.
As the present invention further scheme: in step (8), the step of artificial aging processing are as follows: heat aluminium alloy C
6~16 hours are kept the temperature to 170~195 DEG C.
Compared with prior art, the beneficial effects of the present invention are:
A kind of quality oxide effect high strength alumin ium alloy, it is middle by Si control 0.50~0.60%, subtract preferentially with Mn,
Fe generate compound Si amount, Mg surplus, then Mg2Si total amount between 1.20-1.55%, distance Mg2Si in aluminium alloy most
Big solid solubility has certain distance, and production is effectively ensured.Cu exists in Al-Mg-Si system alloy with solution, ageing treatment mistake
As the forming core core of reinforced deposition phase in journey so that reinforced deposition phase small and dispersed is uniformly distributed, significantly improve material when
Hardening capacity is imitated, the content of Cu is controlled 0.55~0.75%；It is superfluous that Mg is designed in the present invention, total amount is 2.2~2.8%.
Mg maximum solid solution degree 17.4% in aluminium, the increase of Mg can be obviously improved intensity and will not excessively reduce ductility, by Mn matter
It is 0.05~0.20% that amount percentage, which controls the design more optimized≤0.30%, is not influencing material recrystallization and is quenching
A greater degree of nodularization Fe phase in the case where fiery sensibility, can not only eliminate the adverse effect of Fe phase, and the Fe phase of nodularization instead can
Promote Recrystallization nucleation, the grain structure of extruded product can be refined, product cross section average grain size within 3.0-5.0 grades,
The oxidation effectiveness of extruded product can be improved.Cr mass percent is controlled and significantly improves extrusion process in≤0.01%, Cr element
Not with the direct contact site of extrusion die, flow of metal degree is small for recrystallization temperature, especially extrusion pin meat thickness middle position, when
When Cr is more than 0.01%, which is presented recrystallization and the coexistent state of non-recrystallization, and material line defect is shown as after oxidation
Therefore, Cr mass percent will be controlled≤0.01% in the present invention.Simultaneously in preparation process, design piecewise uniformization processing
And artificial aging processing, the yield strength of aluminium alloy is further increased, and surrender reachable 400MPa or more, and oxidation film by force
Binding force is strong, oxidation effectiveness is high-quality.
Detailed description of the invention
Fig. 1 is the aluminium alloy C grain structure figure of embodiment 1 in the present invention.
Fig. 2 is the aluminium alloy C grain structure figure of comparative example 1 in the present invention.
Fig. 3 is the obtained aluminium alloy schematic diagram of comparative example 1 in the present invention.
Fig. 4 is the scanning electron microscope observation figure of the ingot casting B of embodiment 1 in the present invention.
Fig. 5 is the scanning electron microscope observation figure of the ingot casting B of embodiment 4 in the present invention.
Fig. 6 is the scanning electron microscope observation figure of the ingot casting B of comparative example 7 in the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Tradition 6 is alloy T6 state, and mostly between 170 to 350, Si, Mg, Cu element relied primarily in alloy contains yield strength
Amount is strengthened.
Design of alloy in the present invention, Si and Mg element are the main alloy elements to form hardening constituent, pass through to be formed
Mg2Si control the strength of materials, Mg2Si in aluminum substrate maximum solid solution degree be 1.85%, when Mg2Si total amount is closer to 1.85%
When, solid solubility temperature and solidus temperature are very close, are difficult to control in extrusion industry production.Temperature is too low, and solid solution is insufficient,
Mg2Si cannot play a role very well.Temperature is excessively high, more than the solidus temperature of material, then squeezes and cracks.It will in the present invention
Si controls the Si amount for subtracting 0.50~0.60% and preferentially generating compound with Mn, Fe, and Mg is superfluous, then Mg2Si total amount exists
Between 1.20-1.55%, production is effectively ensured.Cu exists in Al-Mg-Si system alloy with solution, in ageing process
As the forming core core of reinforced deposition phase, so that reinforced deposition phase small and dispersed is uniformly distributed, the timeliness for significantly improving material is hard
Change performance.Meanwhile the addition of Cu element will increase extruding difficulty, matrix color is partially yellow after oxidation is excessively added, and the present invention is by Cu
Content control 0.55~0.75%.It is superfluous that Mg is designed in the present invention, total amount is 2.2~2.8%.Mg maximum solid solution in aluminium
The increase of 17.4%, Mg of degree can be obviously improved intensity and will not excessively reduce ductility.But it is difficult that excessive Mg will increase extruding
Degree, it is difficult to realize that extrusion industry metaplasia produces.If simultaneously when excessive increase Mg, total amount of compound increases in alloy, to subsequent anode
The adhesive force of oxidation film has an impact.To improve extrusion process difficulty rising caused by addition Mg and avoiding excessive Mg in Re Chu
Eutectic dissolution occurs during reason leads to burn-off phenomenon, and the Homogenization Treatments in the present invention are multistage using segmentation: first from room temperature liter
Temperature to 400~440 DEG C keep the temperature 2~4 hours, then heat to 550~575 DEG C keep the temperature 12~24 hours, be cooled to room temperature.Together
When, the present invention in cooperate following extrusion process techniques: between extrusion ratio 30 to 80, extruded product be solid material.
Mn, Cr element can improve recrystallization temperature, and wherein Cr element influences become apparent.The present invention exists Cr control of element
≤ 0.01%.Excessive Cr element will significantly improve the recrystallization temperature of material, lead to product recrystallization does not occur and is indulged
To the fibr tissue of elongation, it is low and deep to aoxidize rear surface；Or making material that partial, re-crystallization occur, i.e. material is mixed grain structure.Oxidation
There is no the regions of recrystallization to belong to longitudinally elongated crystal grain afterwards, and material line state is rendered as after oxidation.And the appropriate addition energy of Mn
Effectively promoting needle-shaped inversion of phases containing Fe is spherical phase containing Fe, and Mn mass percent of the present invention is controlled≤0.30%, more
Design for optimization is 0.05~0.20%, a greater degree of ball in the case where not influencing material recrystallization with quenching sensitive
Change Fe phase, the adverse effect of Fe phase can not only be eliminated, the Fe phase of nodularization can promote Recrystallization nucleation instead, can refine extruded product
Grain structure, product cross section average grain size can improve the oxidation effectiveness of extruded product within 3.0-5.0 grades.
Fe solid solubility very little at room temperature, mainly with brittlement phases and eutectics such as insoluble or indissoluble Al7Cu2Fe, AlFeMnSi
The form of compound exists, and Fe and Si also will form brittle AlFeSi intermetallic compound, if these compounds do not close
It is black to also result in product oxidation appearance not only bad for extruding for its size of the control of reason and distribution situation, coarse acicular Fe phase
The defects of line, material line, sand hole, excessive Fe will lead to the requirement that product is unable to satisfy highlighted oxidation, and Fe phase particle can not reach
To required size.The present invention need to control Fe mass percent and control within 0.20%.
Homogenization Treatments: carrying out segmentation multistage uniformization processing in the present invention, main to consider Mg eutectic solution temperature 450
DEG C, therefore kept the temperature at 400-440 DEG C, superfluous MG is dissolved.Burning caused by avoiding eutectic from dissolving.Meanwhile in order to reduce
Casting stress is dissolved Mg2Si and promotes Copper component nodularization, improves Squeezing ground, be warming up to 550~575 DEG C of heat preservations, 12~24 hours
Extrusion process technique: between extrusion ratio 30 to 80, extruded product is solid material.
Artificial aging, 5 be that alloy belongs to not heat-treatable strengthened alloy, and heat treatable alloy member is added in the present invention
Element, therefore increase artificial aging process.
Concrete scheme is as follows:
A kind of quality oxide effect high strength alumin ium alloy, the component including following mass percent: Si is 0.50~0.60%,
Mg be 2.2~2.8%, Fe≤0.20%, Cu be 0.55~0.75%, Mn≤0.30%, Cr≤0.01%, Ti≤0.03%,
Other single impurity element≤0.05, surplus Al.
Preferably, a kind of ingredient of quality oxide effect high strength alumin ium alloy, the component including following mass percent: Si is
0.50~0.60%, Mg be 2.5~2.8%, Fe≤0.15%, Cu be 0.60~0.70%, Cr≤0.01%, Mn be 0.05~
0.20%, Ti≤0.03%, other single impurity element≤0.05, surplus Al.
A kind of manufacturing method of quality oxide effect high strength alumin ium alloy, comprising the following steps:
(1) it stocks up according to above-mentioned mass percent, wherein aluminium and magnesium use aluminium ingot and magnesium ingot；
(2) aluminium ingot is heated to 730~780 DEG C to melt, adds magnesium ingot and intermediate alloy, stirring fusing obtains
Aluminum alloy melt I；
(3) refining agent is added into aluminum alloy melt I, then is passed through argon gas and aluminum alloy melt is refined, skims, stand, obtain
To aluminum alloy melt II；
(4) aluminum alloy melt II is put into chute, adds grain refiner and carries out online crystal grain refinement processing, obtain aluminium conjunction
Golden liquid III；
(5) aluminum alloy melt III is cast under the conditions of 680~730 DEG C, obtains aluminium alloy cast ingot A；
(6) aluminium alloy cast ingot A is subjected to segmentation multistage uniformization processing: first from room temperature to 400~440 DEG C of heat preservations 2
It~4 hours, then heats to 550~575 DEG C and keeps the temperature 12~24 hours, be cooled to room temperature, obtain aluminium alloy cast ingot B；
(7) aluminium alloy cast ingot B is heated to 500~550 DEG C of progress extrusion moldings, between extrusion ratio 30~80, extruded product
For solid material, then water quenching is worn online, obtain extruding aluminium alloy C；
(8) artificial aging is handled: aluminium alloy C being heated to 170~195 DEG C and keeps the temperature 6~16 hours, obtains having high-quality oxygen
Change effect high strength alumin ium alloy.
Embodiment 1
The ingredient of aluminium alloy: Si 0.55%, Mg 2.7%, Fe 0.12%, Cu 0.65%, Mn 0.12%, Cr
For 0.0080%, Ti 0.01%, other single impurity element≤0.05, surplus Al.
A kind of manufacturing method of quality oxide effect high strength alumin ium alloy, comprising the following steps:
(1) it stocks up according to above-mentioned mass percent, wherein aluminium and magnesium use aluminium ingot and magnesium ingot；
(2) aluminium ingot is heated to 760 DEG C to melt, adds magnesium ingot and intermediate alloy, stirring fusing obtains aluminium alloy
Liquid I；
(3) refining agent is added into aluminum alloy melt I, then is passed through argon gas and aluminum alloy melt is refined, skims, stand, obtain
To aluminum alloy melt II；
(4) aluminum alloy melt II is put into chute, adds grain refiner and carries out online crystal grain refinement processing, obtain aluminium conjunction
Golden liquid III；
(5) aluminum alloy melt III is cast under the conditions of 680~730 DEG C, obtains aluminium alloy cast ingot A；
(6) aluminium alloy cast ingot A is subjected to segmentation multistage uniformization processing: first keeps the temperature 3 hours from room temperature to 430 DEG C,
It then heats to 570 DEG C and keeps the temperature 16 hours, be cooled to room temperature, obtain aluminium alloy cast ingot B；
(7) aluminium alloy cast ingot B being heated to 530 DEG C of progress extrusion moldings, extrusion ratio 40, extruded product is solid material, then
Progress wears water quenching online, obtains extruding aluminium alloy C；
(8) artificial aging is handled: aluminium alloy C being heated to 195 DEG C and keeps the temperature 6 hours, is obtained high with quality oxide effect
Strength aluminum alloy.
Embodiment 2
The ingredient of aluminium alloy: Si 0.6%, Mg 2.5%, Fe 0.15%, Cu 0.55%, Mn 0.08%, Cr
For 0.0080%, Ti 0.01%, other single impurity element≤0.05, surplus Al.
A kind of manufacturing method of quality oxide effect high strength alumin ium alloy, comprising the following steps:
(1) it stocks up according to above-mentioned mass percent, wherein aluminium and magnesium use aluminium ingot and magnesium ingot；
(2) aluminium ingot is heated to 760 DEG C to melt, adds magnesium ingot and intermediate alloy, stirring fusing obtains aluminium alloy
Liquid I；
(3) refining agent is added into aluminum alloy melt I, then is passed through argon gas and aluminum alloy melt is refined, skims, stand, obtain
To aluminum alloy melt II；
(4) aluminum alloy melt II is put into chute, adds grain refiner and carries out online crystal grain refinement processing, obtain aluminium conjunction
Golden liquid III；
(5) aluminum alloy melt III is cast under the conditions of 680~730 DEG C, obtains aluminium alloy cast ingot A；
(6) aluminium alloy cast ingot A is subjected to segmentation multistage uniformization processing: first keeps the temperature 3 hours from room temperature to 430 DEG C,
It then heats to 570 DEG C and keeps the temperature 16 hours, be cooled to room temperature, obtain aluminium alloy cast ingot B；
(7) aluminium alloy cast ingot B being heated to 530 DEG C of progress extrusion moldings, extrusion ratio 40, extruded product is solid material, then
Progress wears water quenching online, obtains extruding aluminium alloy C；
(8) artificial aging is handled: aluminium alloy C being heated to 195 DEG C and keeps the temperature 6 hours, is obtained high with quality oxide effect
Strength aluminum alloy.
Embodiment 3
The ingredient of aluminium alloy: Si 0.5%, Mg 2.5%, Fe 0.18%, Cu 0.75%, Mn 0.18%, Cr
For 0.0080%, Ti 0.0050%, other single impurity element≤0.05, surplus Al.
A kind of manufacturing method of quality oxide effect high strength alumin ium alloy, comprising the following steps:
(1) it stocks up according to above-mentioned mass percent, wherein aluminium and magnesium use aluminium ingot and magnesium ingot；
(2) aluminium ingot is heated to 760 DEG C to melt, adds magnesium ingot and intermediate alloy, stirring fusing obtains aluminium alloy
Liquid I；
(3) refining agent is added into aluminum alloy melt I, then is passed through argon gas and aluminum alloy melt is refined, skims, stand, obtain
To aluminum alloy melt II；
(4) aluminum alloy melt II is put into chute, adds grain refiner and carries out online crystal grain refinement processing, obtain aluminium conjunction
Golden liquid III；
(5) aluminum alloy melt III is cast under the conditions of 680~730 DEG C, obtains aluminium alloy cast ingot A；
(6) aluminium alloy cast ingot A is subjected to segmentation multistage uniformization processing: first keeps the temperature 3 hours from room temperature to 430 DEG C,
It then heats to 570 DEG C and keeps the temperature 16 hours, be cooled to room temperature, obtain aluminium alloy cast ingot B；
(7) aluminium alloy cast ingot B being heated to 530 DEG C of progress extrusion moldings, extrusion ratio 40, extruded product is solid material, then
Progress wears water quenching online, obtains extruding aluminium alloy C；
(8) artificial aging is handled: aluminium alloy C being heated to 195 DEG C and keeps the temperature 6 hours, is obtained high with quality oxide effect
Strength aluminum alloy.
Embodiment 4
The ingredient of aluminium alloy: Si 0.55%, Mg 2.7%, Fe 0.20%, Cu 0.65%, Mn 0.12%, Cr
For 0.0080%, Ti 0.01%, other single impurity element≤0.05, surplus Al.
A kind of manufacturing method of quality oxide effect high strength alumin ium alloy, comprising the following steps:
(1) it stocks up according to above-mentioned mass percent, wherein aluminium and magnesium use aluminium ingot and magnesium ingot；
(2) aluminium ingot is heated to 760 DEG C to melt, adds magnesium ingot and intermediate alloy, stirring fusing obtains aluminium alloy
Liquid I；
(3) refining agent is added into aluminum alloy melt I, then is passed through argon gas and aluminum alloy melt is refined, skims, stand, obtain
To aluminum alloy melt II；
(4) aluminum alloy melt II is put into chute, adds grain refiner and carries out online crystal grain refinement processing, obtain aluminium conjunction
Golden liquid III；
(5) aluminum alloy melt III is cast under the conditions of 680~730 DEG C, obtains aluminium alloy cast ingot A；
(6) aluminium alloy cast ingot A is subjected to Homogenization Treatments: small from 560 DEG C of room temperature heat preservations 12 with 0.8 DEG C per minute
When, it is cooled to room temperature, obtains aluminium alloy cast ingot B；
(7) aluminium alloy cast ingot B being heated to 530 DEG C of progress extrusion moldings, extrusion ratio 30, extruded product is solid material, then
Progress wears water quenching online, obtains extruding aluminium alloy C；
(8) artificial aging is handled: aluminium alloy C being heated to 195 DEG C and keeps the temperature 6 hours, is obtained high with quality oxide effect
Strength aluminum alloy.
Comparative example 1
The ingredient of aluminium alloy: Si 0.55%, Mg 2.7%, Fe 0.12%, Cu 0.65%, Mn 0.10%, Cr
For 0.15%, Ti 0.01%, other single impurity element≤0.05, surplus Al.
A kind of manufacturing method of quality oxide effect high strength alumin ium alloy, comprising the following steps:
(1) it stocks up according to above-mentioned mass percent, wherein aluminium and magnesium use aluminium ingot and magnesium ingot；
(2) aluminium ingot is heated to 760 DEG C to melt, adds magnesium ingot and intermediate alloy, stirring fusing obtains aluminium alloy
Liquid I；
(3) refining agent is added into aluminum alloy melt I, then is passed through argon gas and aluminum alloy melt is refined, skims, stand, obtain
To aluminum alloy melt II；
(4) aluminum alloy melt II is put into chute, adds grain refiner and carries out online crystal grain refinement processing, obtain aluminium conjunction
Golden liquid III；
(5) aluminum alloy melt III is cast under the conditions of 680~730 DEG C, obtains aluminium alloy cast ingot A；
(6) aluminium alloy cast ingot A is subjected to segmentation multistage uniformization processing: first keeps the temperature 3 hours from room temperature to 430 DEG C,
It then heats to 570 DEG C and keeps the temperature 16 hours, be cooled to room temperature, obtain aluminium alloy cast ingot B；
(7) aluminium alloy cast ingot B being heated to 530 DEG C of progress extrusion moldings, extrusion ratio 40, extruded product is solid material, then
Progress wears water quenching online, obtains extruding aluminium alloy C；
(8) artificial aging is handled: aluminium alloy C being heated to 195 DEG C and keeps the temperature 6 hours, is obtained high with quality oxide effect
Strength aluminum alloy.
Comparative example 2
Si is 0.65%, Mg 0.95%, Fe 0.12%, Cu 0.65%, Mn 0.30%, Cr 0.0090%,
Ti is 0.02%, other single impurity element≤0.05, surplus Al.
A kind of manufacturing method of quality oxide effect high strength alumin ium alloy, comprising the following steps:
(1) it stocks up according to above-mentioned mass percent, wherein aluminium and magnesium use aluminium ingot and magnesium ingot；
(2) aluminium ingot is heated to 760 DEG C to melt, adds magnesium ingot and intermediate alloy, stirring fusing obtains aluminium alloy
Liquid I；
(3) refining agent is added into aluminum alloy melt I, then is passed through argon gas and aluminum alloy melt is refined, skims, stand, obtain
To aluminum alloy melt II；
(4) aluminum alloy melt II is put into chute, adds grain refiner and carries out online crystal grain refinement processing, obtain aluminium conjunction
Golden liquid III；
(5) aluminum alloy melt III is cast under the conditions of 680~730 DEG C, obtains aluminium alloy cast ingot A；
(6) aluminium alloy cast ingot A is subjected to segmentation multistage uniformization processing: first keeps the temperature 3 hours from room temperature to 430 DEG C,
It then heats to 570 DEG C and keeps the temperature 16 hours, be cooled to room temperature, obtain aluminium alloy cast ingot B；
(7) aluminium alloy cast ingot B being heated to 530 DEG C of progress extrusion moldings, extrusion ratio 40, extruded product is solid material, then
Progress wears water quenching online, obtains extruding aluminium alloy C；
(8) artificial aging is handled: aluminium alloy C being heated to 195 DEG C and keeps the temperature 6 hours, is obtained high with quality oxide effect
Strength aluminum alloy.
Comparative example 3
Si is 0.55%, Mg 2.0%, Fe 0.12%, Cu 0.65%, Mn 0.12%, Cr 0.0020%, Ti
It is 0.01%, other single impurity element≤0.05, surplus Al.
A kind of manufacturing method of quality oxide effect high strength alumin ium alloy, comprising the following steps:
(1) it stocks up according to above-mentioned mass percent, wherein aluminium and magnesium use aluminium ingot and magnesium ingot；
(2) aluminium ingot is heated to 760 DEG C to melt, adds magnesium ingot and intermediate alloy, stirring fusing obtains aluminium alloy
Liquid I；
(3) refining agent is added into aluminum alloy melt I, then is passed through argon gas and aluminum alloy melt is refined, skims, stand, obtain
To aluminum alloy melt II；
(4) aluminum alloy melt II is put into chute, adds grain refiner and carries out online crystal grain refinement processing, obtain aluminium conjunction
Golden liquid III；
(5) aluminum alloy melt III is cast under the conditions of 680~730 DEG C, obtains aluminium alloy cast ingot A；
(6) aluminium alloy cast ingot A is subjected to segmentation multistage uniformization processing: first keeps the temperature 3 hours from room temperature to 430 DEG C,
It then heats to 570 DEG C and keeps the temperature 16 hours, be cooled to room temperature, obtain aluminium alloy cast ingot B；
(7) aluminium alloy cast ingot B being heated to 530 DEG C of progress extrusion moldings, extrusion ratio 40, extruded product is solid material, then
Progress wears water quenching online, obtains extruding aluminium alloy C；
(8) artificial aging is handled: aluminium alloy C being heated to 195 DEG C and keeps the temperature 6 hours, is obtained high with quality oxide effect
Strength aluminum alloy.
Comparative example 4
The ingredient of aluminium alloy: Si 0.55%, Mg 2.7%, Fe 0.12%, Cu 0.04%, Mn 0.12%, Cr
For 0.0080%, Ti 0.01%, other single impurity element≤0.05, surplus Al.
A kind of manufacturing method of quality oxide effect high strength alumin ium alloy, comprising the following steps:
(1) it stocks up according to above-mentioned mass percent, wherein aluminium and magnesium use aluminium ingot and magnesium ingot；
(2) aluminium ingot is heated to 760 DEG C to melt, adds magnesium ingot and intermediate alloy, stirring fusing obtains aluminium alloy
Liquid I；
(3) refining agent is added into aluminum alloy melt I, then is passed through argon gas and aluminum alloy melt is refined, skims, stand, obtain
To aluminum alloy melt II；
(4) aluminum alloy melt II is put into chute, adds grain refiner and carries out online crystal grain refinement processing, obtain aluminium conjunction
Golden liquid III；
(5) aluminum alloy melt III is cast under the conditions of 680~730 DEG C, obtains aluminium alloy cast ingot A；
(6) aluminium alloy cast ingot A is subjected to segmentation multistage uniformization processing: first keeps the temperature 3 hours from room temperature to 430 DEG C,
It then heats to 570 DEG C and keeps the temperature 16 hours, be cooled to room temperature, obtain aluminium alloy cast ingot B；
(7) aluminium alloy cast ingot B being heated to 530 DEG C of progress extrusion moldings, extrusion ratio 40, extruded product is solid material, then
Progress wears water quenching online, obtains extruding aluminium alloy C；
(8) artificial aging is handled: aluminium alloy C being heated to 195 DEG C and keeps the temperature 6 hours, is obtained high with quality oxide effect
Strength aluminum alloy.
Comparative example 5
The ingredient of aluminium alloy: Si 0.55%, Mg 2.7%, Fe 0.12%, Cu 0.65%, Mn 0.12%, Cr
For 0.0080%, Ti 0.01%, other single impurity element≤0.05, surplus Al.
A kind of manufacturing method of quality oxide effect high strength alumin ium alloy, comprising the following steps:
(1) it stocks up according to above-mentioned mass percent, wherein aluminium and magnesium use aluminium ingot and magnesium ingot；
(2) aluminium ingot is heated to 760 DEG C to melt, adds magnesium ingot and intermediate alloy, stirring fusing obtains aluminium alloy
Liquid I；
(3) refining agent is added into aluminum alloy melt I, then is passed through argon gas and aluminum alloy melt is refined, skims, stand, obtain
To aluminum alloy melt II；
(4) aluminum alloy melt II is put into chute, adds grain refiner and carries out online crystal grain refinement processing, obtain aluminium conjunction
Golden liquid III；
(5) aluminum alloy melt III is cast under the conditions of 680~730 DEG C, obtains aluminium alloy cast ingot A；
(6) aluminium alloy cast ingot A is subjected to segmentation multistage uniformization processing: first keeps the temperature 3 hours from room temperature to 430 DEG C,
It then heats to 570 DEG C and keeps the temperature 16 hours, be cooled to room temperature, obtain aluminium alloy cast ingot B；
(7) aluminium alloy cast ingot B being heated to 530 DEG C of progress extrusion moldings, extrusion ratio 40, extruded product is solid material, then
Progress wears water quenching online, obtains extruding aluminium alloy C；
(prosthetic aging sequence)
Comparative example 6
The ingredient of aluminium alloy: Si 0.55%, Mg 2.7%, Fe 0.12%, Cu 0.65%, Mn 0.12%, Cr
For 0.0080%, Ti 0.01%, other single impurity element≤0.05, surplus Al.
A kind of manufacturing method of quality oxide effect high strength alumin ium alloy, comprising the following steps:
(1) it stocks up according to above-mentioned mass percent, wherein aluminium and magnesium use aluminium ingot and magnesium ingot；
(2) aluminium ingot is heated to 760 DEG C to melt, adds magnesium ingot and intermediate alloy, stirring fusing obtains aluminium alloy
Liquid I；
(3) refining agent is added into aluminum alloy melt I, then is passed through argon gas and aluminum alloy melt is refined, skims, stand, obtain
To aluminum alloy melt II；
(4) aluminum alloy melt II is put into chute, adds grain refiner and carries out online crystal grain refinement processing, obtain aluminium conjunction
Golden liquid III；
(5) aluminum alloy melt III is cast under the conditions of 680~730 DEG C, obtains aluminium alloy cast ingot A；
(6) aluminium alloy cast ingot A is subjected to segmentation multistage uniformization processing: first keeps the temperature 3 hours from room temperature to 430 DEG C,
It then heats to 570 DEG C and keeps the temperature 6 hours, be cooled to room temperature, obtain aluminium alloy cast ingot B；
(7) aluminium alloy cast ingot B being heated to 530 DEG C of progress extrusion moldings, extrusion ratio 90, extruded product is hollow circular-tube,
Wall thickness 3mm, then water quenching is worn online, obtain extruding aluminium alloy C；
Comparative example 7
The ingredient of aluminium alloy: Si 0.55%, Mg 2.7%, Fe 0.12%, Cu 0.65%, Mn 0.12%, Cr
For 0.0080%, Ti 0.01%, other single impurity element≤0.05, surplus Al.
A kind of manufacturing method of quality oxide effect high strength alumin ium alloy, comprising the following steps:
(1) it stocks up according to above-mentioned mass percent, wherein aluminium and magnesium use aluminium ingot and magnesium ingot；
(2) aluminium ingot is heated to 760 DEG C to melt, adds magnesium ingot and intermediate alloy, stirring fusing obtains aluminium alloy
Liquid I；
(3) refining agent is added into aluminum alloy melt I, then is passed through argon gas and aluminum alloy melt is refined, skims, stand, obtain
To aluminum alloy melt II；
(4) aluminum alloy melt II is put into chute, adds grain refiner and carries out online crystal grain refinement processing, obtain aluminium conjunction
Golden liquid III；
(5) aluminum alloy melt III is cast under the conditions of 680~730 DEG C, obtains aluminium alloy cast ingot A；
(6) aluminium alloy cast ingot A is subjected to Homogenization Treatments: keeps the temperature 12 hours with 2 DEG C per minute from 560 DEG C of room temperature,
It is cooled to room temperature, obtains aluminium alloy cast ingot B；
(7) aluminium alloy cast ingot B being heated to 530 DEG C of progress extrusion moldings, extrusion ratio 40, extruded product is solid material, then
Progress wears water quenching online, obtains extruding aluminium alloy C；
(8) artificial aging is handled: aluminium alloy C being heated to 195 DEG C and keeps the temperature 6 hours, is obtained high with quality oxide effect
Strength aluminum alloy.
Performance test
Extruding aluminium alloy obtained by above-described embodiment 1~4 and comparative example 1~7 is subjected to following detection: according to GB/
T228.1-2010 " metal material stretching test part 1: room temperature test method " carries out Mechanics Performance Testing to product；Wherein,
Aluminum alloy heat processing status is T6；According to GB/T 3246.1-2012 " deformation aluminium and Al-alloy products histological test method the 1st
Point: the microscopic structure method of inspection " test sample crystallite dimension, the results are shown in Table 1:
The mechanical property and grain structure of the alloy of the alloy and comparative example 1~7 of 1 Examples 1 to 4 of table
As it can be seen from table 1 being cast using method of the invention by rationally controlling each element content and optimization in alloy
It makes, squeeze and system of heat treatment process, so that alloy, after T6 is heat-treated, the yield strength of material reaches 400MPa or more, and
Perfect recrystallization tissue can be obtained, between 3 grades to 6 grades of grain grade.
For embodiment 4 since Homogenization Treatments technique is slightly changed, material slight burning, surrender due to there are eutectic dissolution is strong
Degree variation is unobvious, and elongation is declined.
Comparative example 7 is due to Homogenization Treatments technique significant change, and there are eutectic dissolution, compounds to polymerize and burning for material,
Intensity sharp fall, elongation decline
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of quality oxide effect high strength alumin ium alloy, which is characterized in that the component including following mass percent: Si 0.50
~0.60%, Mg be 2.2~2.8%, Fe≤0.20%, Cu be 0.55~0.75%, Mn≤0.30%, Cr≤0.01%, Ti≤
0.03%, surplus Al.
2. a kind of quality oxide effect high strength alumin ium alloy according to claim 1, which is characterized in that including following quality hundred
Divide the component of ratio: Si is that 0.50~0.60%, Mg is 2.5~2.7%, Fe≤0.15%, and Cu is that 0.60~0.70%, Mn is
0.05~0.20%, Cr≤0.01%, Ti≤0.03%, surplus Al.
3. a kind of quality oxide effect high strength alumin ium alloy according to claim 1 or 2, which is characterized in that the aluminium alloy
In other single impurity element≤0.05%.
4. a kind of preparation method of quality oxide effect high strength alumin ium alloy, which comprises the steps of:
(1) it stocks up according to above-mentioned mass percent, wherein aluminium and magnesium use aluminium ingot and magnesium ingot；
(2) aluminium ingot is heated to 730~780 DEG C to melt, adds magnesium ingot and intermediate alloy, stirring fusing obtains aluminium conjunction
Golden liquid I；
(3) refining agent is added into aluminum alloy melt I, then is passed through argon gas and aluminum alloy melt I is refined, skims, stand, obtain aluminium
Aluminium alloy II；
(4) aluminum alloy melt II is put into chute, adds grain refiner and carry out online crystal grain refinement processing, obtains aluminum alloy melt
III；
(5) aluminum alloy melt III is cast under the conditions of 680~730 DEG C, obtains aluminium alloy cast ingot A；
(6) aluminium alloy cast ingot A is subjected to segmentation multistage uniformization processing, obtains aluminium alloy cast ingot B；
(7) aluminium alloy cast ingot B is heated to 500~550 DEG C of progress extrusion moldings, extruded product is solid material, then is carried out online
Water quenching is worn, extruding aluminium alloy C is obtained；
(8) aluminium alloy C is subjected to artificial aging processing, obtains the quality oxide effect high strength alumin ium alloy.
5. a kind of preparation method of quality oxide effect high strength alumin ium alloy according to claim 4, which is characterized in that step
(6) in, it is segmented the step of multistage uniformization is handled are as follows: first keep the temperature 2~4 hours from room temperature to 400~440 DEG C, then rise
Temperature to 550~575 DEG C keep the temperature 12~24 hours, be cooled to room temperature.
6. a kind of preparation method of quality oxide effect high strength alumin ium alloy according to claim 4, which is characterized in that step
(7) in, extrusion ratio when extrusion molding is 30~80.
7. a kind of preparation method of quality oxide effect high strength alumin ium alloy according to claim 4, which is characterized in that step
(8) in, artificial aging processing the step of are as follows: by aluminium alloy C be heated to 170~195 DEG C keep the temperature 6~16 hours.
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| CN113355616A (en) * | 2021-06-03 | 2021-09-07 | 苏州大学 | Heat treatment method for inhibiting Al-Mg-Si-Cu-Mn-Cr aluminum alloy deformation recrystallization and coarse grains |
| CN114351014A (en) * | 2021-12-28 | 2022-04-15 | 广东和胜工业铝材股份有限公司 | Aluminum alloy and preparation method and application thereof |
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| CN114351014A (en) * | 2021-12-28 | 2022-04-15 | 广东和胜工业铝材股份有限公司 | Aluminum alloy and preparation method and application thereof |
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