CN1997763A - Thin strips or foils of alfesi alloy - Google Patents

Thin strips or foils of alfesi alloy Download PDF

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Publication number
CN1997763A
CN1997763A CNA2004800210038A CN200480021003A CN1997763A CN 1997763 A CN1997763 A CN 1997763A CN A2004800210038 A CNA2004800210038 A CN A2004800210038A CN 200480021003 A CN200480021003 A CN 200480021003A CN 1997763 A CN1997763 A CN 1997763A
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strip
thickness
alloy
paper tinsel
annealing
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CN100445405C (en
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阿梅勒·达尼埃卢
让马里·费蓬
布律诺·舍纳尔
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Novelis Inc Canada
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Novelis Inc Canada
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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
    • 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
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • 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
    • 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
    • C22F1/043—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 silicon as the next major constituent

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Continuous Casting (AREA)
  • Laminated Bodies (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Wrappers (AREA)
  • Closures For Containers (AREA)
  • Metal Rolling (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Catalysts (AREA)

Abstract

The invention relates to a thin strip or foil, having a thickness of 6 to 200mum, preferably, of 6 to 50mum, and composed of an alloy containing (in weight %) Si: 1.0 to 1.5, Fe: 1.0 to 1.5, Cu < 0.2, Mn < 0.1, other elements < 0.05 each up to a total < 0.15, the remainder being Al. The annealed thin strip or foil has a tensile strength Rm > 110 MPa for a thickness > 9 mum and > 100 MPa for a thickness of 6 to 9 mum, and an elastic limit R0.2 > 70 MPa. Preferably, said alloy has a silicon content of 1.1 to 1.3 % and an iron content of 1.0 to 1.2 %. The aforementioned thin strips or foils may be used especially for the production of multilayer composites, overcaps for bottles or aluminium wrappings.

Description

Ferro-aluminum silicon alloy strip or paper tinsel
Technical field
The method that the present invention relates to strip or paper tinsel and make this strip or paper tinsel, the thickness of described strip or paper tinsel be less than 200 μ m, make preferably less than 50 μ m, and by the aluminium alloy that contains iron and silicon, and have quite low manganese content.These bands can obtain by the D.C.casting or the continuous casting of conventional panels (plate), for example biobelt casting or double roller casting.
Background technology
The trend in aluminium alloy thin foil market just develops towards the direction that the thickness that is used for set application continues to reduce, and requires high-mechanical property and good formability simultaneously.
Alloy with low-down manganese content is generally used for thin foil, for example 8111 alloys with following composition (weight %) of ABAL (aluminumassociation) registration:
Si 0.30-1.1；Fe 0.40-1.0；Cu＜0.10；Mn＜0.10
Lack manganese and make during last annealing and to realize recrystallize easily, but ultimate tensile strength Rm is in thickness deficiency during less than 100 μ m.
Therefore, need development novel alloy and/or optimization transition process to meet the need of market.
Generally add manganese to improve physical strength, for example 8006 alloys with following composition (weight %) of ABAL's registration:
Si＜0.40；Fe：1.2-2.0；Cu＜0.30；Mn：0.30-1.0；Mg＜0.10
The result who adds manganese makes material hard.For the alloy with following composition: Si=0.23%; Fe=1.26%; Cu=0.017%; Mn=0.37%; Mg=0.0032%; Ti=0.008% adopts the patent US 6 517 646 that belongs to the applicant to be R when thickness is 6.6 μ m in conjunction with the mechanical property that favourable transition process obtains mValue equals 103MPa.
Also can improve mechanical property by in ferruginous 8000 series alloys, adding a spot of manganese.Patent application WO 02/64848 (Alcan international) has described the strip of being made by the AlFeSi alloy that contains 1.2%-1.7%Fe and 0.35%-0.8%Si by the continuous casting manufacturing.Obtain high mechanical strength by the manganese that in alloy, adds 0.07%-0.20%.Add manganese and be considered to be in that to obtain little grain-size after the final annealing necessary.
Therefore, manganese seemingly can improve the element of 8000 alloy mechanical performances.But, in the solid solution or the manganese of fine precipitation forms can during final annealing, hinder or postpone recrystallize.Therefore, need in each step of described process, accurately control the precipitation that contains the manganese phase, but this normally the difficulty.Any deviation in the transition process all has very important influence to the effect of final annealing.Therefore, the development alloy that do not contain manganese and have a high-mechanical property will be very useful.
United States Patent (USP) 5 503 689 (Reynolds Metals) has been described by the continuous casting that does not have process annealing and the method for cold rolling manufacturing strip, and described strip is made by containing the following alloy of forming: 0.30%-1.1%Si and 0.40%-1.0%Fe, be less than 0.25% Cu and be less than 0.1% Mn.The preferred content of iron and silicon is 0.6% and 0.75%.
United States Patent (USP) 5 725 695 (Reynolds Metals) has been described in 400 ℃-440 ℃ (750_-825_) following process annealing and at 288 ℃ (550_) and has been descended final recrystallization annealing to handle the process of same combination.The ratio of Si and Fe content is more than or equal to 1.In an embodiment, when thickness was 46 μ m (0.00185 '), gained greatest limit tensile strength was 90MPa (13.13ksi), and maximum yielding stress is 39.1MPa (5.68ksi), and elongation is 11.37%.These mechanical propertys are still on the low side concerning some are used.
For the alloy that obtains by continuous casting, need carry out high-temperature heat treatment usually, thereby reduce the hazardous property of segregation by absorbing the precipitation piece again and structure on the whole thickness being homogenized.(form 0.71%Fe by 8011 alloys that double roller casting obtains; 0.77%Si; 0.038%Cu; 0.006%Mn; 98.45%Al) at article " the Centerline Segregation in a Twin-Roll Cast AA8011 Alloy " Aluminium of 600 ℃ of effects that homogenize at Y.Birol, 74,1998, among the pp 318-321 description is arranged.Precipitated phase is improved and has been reduced ununiformity.Therefore the minimizing of center segregation has limited the porosity of ultra-thin paper tinsel and has improved their formability.
The restriction thermal treatment temp says it is attracting from economic angle.For consisting of 0.7%Fe; 0.7%Si; Mn＜0.02, Zn＜0.02; 8111 alloys of Cu＜0.02, though must be 550 ℃-580 ℃ annealing (referring to people's such as M.Slamova " Response of AA8006 and AA8111 Strip-CastRolled Alloys to High Temperature Annealing " in order to obtain changing more completely, ICAA-6,1998), still observing the transformation mutually that obtains perfect recrystallization at 460 ℃ begins.Therefore, can consider that not manganiferous alloy is carried out low temperature to homogenize.
And in the transformation of low thickness, standard practice is to add the process annealing step with softening metal after homogenizing.For manganese alloy, process annealing control needs pyroprocessing (more than 400 ℃) to realize recrystallize usually.
For no manganese 8000 type alloys, it is contemplated that being lower than under the 8006 type heat treatment of alloy temperature and heat-treat.
Patent application WO 99/23269 (Nippon Light Metal and Alcan International) has described a kind of method of the AlFeSi of can be applicable to alloy, this alloy contains the Si of 0.2%-1% and the Fe of 0.3%-1.2%, and the Si/Fe ratio is 0.4-1.2, process annealing is carried out in two steps in the method, the first step is carried out under 350 ℃-450 ℃, and second step carried out under 200 ℃-330 ℃.This method purpose is the surface imperfection that reduces in the paper tinsel.Do not mention mechanical property.
The objective of the invention is to utilize most economical as far as possible industrially preparing process, obtain making by the AlFeSi alloy that does not add manganese and have strip or a paper tinsel that high mechanical strength keeps good formability simultaneously.
Summary of the invention
Theme of the present invention is that thickness is the alloy thin foil of 6-200 μ m, preferred 6-50 μ m, has following composition (weight %):
Si:1.0-1.5; Fe:1.0-1.5; Cu＜0.2; Mn＜0.1; Other element separately＜0.05 and amount to＜0.15; Remaining is Al, optimum condition Si/Fe 〉=0.95, the ultimate tensile strength R during and thickness＞9 μ m under the annealing tempering mR when＞110MPa, thickness are 6-9 μ m m＞100MPa.The yielding stress R of preferred thin foil 0.2＞70MPa (testing) to shearing sample.As the elongation limit of the function of paper tinsel thickness greater than train value down:
Thickness (μ m) A (%) greater than Be preferably greater than
6-9 3 4
9-15 5 7
15-25 10 15
25-50 18 25
50-200 20 25
The silicone content of described alloy is preferably 1.1%-1.3% and its iron level is 1.0%-1.2%.
Another theme of the present invention is the manufacture method of thickness less than the strip of 200 μ m, and described strip is made by the alloy with following composition (weight %): Si:1.0-1.5; Fe:1.0-1.5; Cu＜0.2; Mn＜0.1; Other element separately＜0.05 and amount to＜0.15; All the other are Al, optimum condition Si/Fe 〉=0.95, described method comprises by the vertical D.C.casting of sheet material and hot rolling or by hot rolled continuous casting subsequently and prepares initial strip, this initial strip is cold-rolled to final thickness, simultaneously can under 250 ℃-350 ℃, preferred 280 ℃-340 ℃ temperature, carry out process annealing 2h-20h, and under 200 ℃-370 ℃ temperature, carry out final annealing.
Embodiment
Made by manganiferous 8000 AlSiFe alloys hardly according to strip of the present invention or paper tinsel, wherein the content of manganese is less than 0.1% usually.The content of iron and silicon is apparently higher than the no manganese AlSiFe alloy 8011 and 8111 alloys that are most commonly used to thin foil.Preferred compositing range is the alloy that contains the iron of the silicon of 1.1%-1.3% and 1.0%-1.2%.
Preferably has such composition according to alloy of the present invention, i.e. ratio Si/Fe 〉=0.95 of the content of silicon and iron.For the alloy with this composition, annealing tempering (O tempering) down their physical strength is very excellent, i.e. ultimate tensile strength R during thickness＞9 μ m m＞110Mpa or or even 115Mpa, R when thickness is 6-9 μ m m＞100Mpa, the conventional yielding stress R at 0.2% place 0.2＞70MPa.Because elongation is the same with 8011 and 8111 alloys at least high and burstpressures (bursting pressure) is higher, therefore this high mechanical strength is not that cost obtains with the formability.
The band of these high-mechanical properties that obtain and the board materials production that obtains by traditional vertical D.C.casting and hot rolling and to derive from the band of the continuous casting by band casting or double roller casting the same good.Also carry out hot rolling after the band casting continuously.
Hot rolling band that obtains by continuous double-roller casting or casting (as-cast) band can homogenize under low temperature (between 450 ℃-500 ℃) and can reduce the center segregation of formability with minimizing, thereby reach final thickness.This low-temperature heat treatment is enough to absorb any center segregation in these no manganese alloys again.Then described band is cold-rolled to final thickness or, carries out process annealing this moment to the interior thickness of 0.5mm-5mm.With to contain manganese alloy different, this process annealing can continue to surpass 2 hours under 250 ℃-350 ℃, preferred 280 ℃-340 ℃ lesser temps.Though described this temperature range among the especially above-mentioned patent application WO 02/64848 in the document, this temperature range is lower than the normal range that remains on more than 400 ℃.
The applicant has been found that, to the AlFeSi alloy more specifically is that the AlFeSi alloy with composition of Si/Fe＞0.95 is implemented low-temperature heat treatment, can cancel process annealing under the possible technically situation, the physical strength that obtains like this is apparently higher than the available physical strength of normal process annealing, high at least 15%.Improved the formability of measuring by burstpressures or dome height (dome height) according to iso standard 2758 when obtaining higher physical strength.
Under 220 ℃-370 ℃ temperature, carry out final annealing 1h-72h.Annealing time depends on the oil quality of removing of paper tinsel.Obtain the fine grain structure after the annealing, the image analysis by scanning electronic microscope records average grain size less than 3 μ m.
Low temperature homogenize complete uneven materialization and low temperature process annealing or fully being combined in of not process annealing be favourable economically, and help to obtain meticulous grain-size.Grain-size is available little more about 30% than high-temperature heat treatment, thereby has improved mechanical property R 0.2And R m, for little thickness, these mechanical propertys are relevant with the quantity of crystal grain juncture (grain joints).The raising of described mechanical property is not that cost realizes to sacrifice elongation, and this is the risk that has also limited one or two single die local failure on the described paper tinsel thickness direction because of the increase of crystal grain quantity on the thickness direction.
Thin foil according to the present invention is particularly suitable for requiring the application of good mechanical strength and high-mouldability, for example makes multilayer materials, in particular for lid, capping or the aluminium wrapping material of packaging fresh product.
Embodiment
Embodiment 1
Make two bands that 6.1mm is thick making by alloy A according to the present invention and 8111 type alloy B by the continuous double-roller casting, to prove the influence of alloy composition, the composition of alloy A shown in the table 1 and alloy B (weight %):
Table 1
Alloy Si Fe Cu Mn Mg Cr Ti B
A 1.17 1.11 0.001 0.003 0.0004 0.0007 0.006 0.0005
B 0.7 0.7 0.001 0.003 0.0005 0.001 0.007 0.0005
The thickness that described band is cold-rolled to 2mm carried out process annealing 5 hours to it then under 320 ℃.Cold rolling then these with several all over up to the final thickness of 38 μ m.Under 270 ℃, they were implemented final annealing 40 hours then.
Measure the mechanical property under every kind of situation.Observed value is the ultimate tensile strength R according to NF-EN standard 546-2 mThe conventional yielding stress R at (in MPa), 0.2% place 0.2The burstpressures Pe (in kPa) and the dome height H d (in mm) that measure with elongation limit A (in %), according to iso standard 2758.The result provides in table 2:
Table 2
Alloy R m(MPa) R 0.2(MPa) A(％) Pe(kPA) Hd
A 123 76 30 394 9.2
B 104 54 15.8 284 6.6
Find that different with 8111 type alloy B, the ultimate strength of alloy A band is much larger than 110MPa, and yielding stress is greater than 70MPa.Burstpressures and elongation are also higher, so the intensity of this alloy and formability are higher.
Embodiment 2
Make the thick band of making by the alloy A described in the embodiment 1 of 6.1mm by the continuous double-roller casting.Subsequently described band is cold-rolled to the thickness of 2mm, under 500 ℃, the part of this band is carried out the normal process annealing 5 hours of this class alloy then.Rest part according to the present invention to this band carries out process annealing 5 hours under 320 ℃.Again will with these two portions cold rolling several all over until the final thickness of 10.5 μ m.Under 270 ℃, they were carried out final annealing 40 hours then.
Identical among performance and the embodiment 1, numerical value is shown in table 3:
Table 3
Process annealing R m(MPa) R 0.2(MPa) A(％) Pe(kPa) Hd(mm)
470℃ 99 63 7.3 71 5.1
320℃ 117 84 8.1 92 5.7
Find that lower process annealing temperature has improved physical strength, elongation, bursting strength and formability.The average grain size that records by the SEM image analysis is 3.6 μ m when annealing for 470 ℃, is 2.3 μ m when annealing for 320 ℃.Therefore, low-temperature annealing is relevant to the minimizing of gained grain-size behind the raising of mechanical property and the final annealing.

Claims (10)

1. alloy thin band or paper tinsel, its thickness is 6-200 μ m, preferred 6-50 μ m, described alloy has following composition (weight %):
Si:1.0-1.5; Fe:1.0-1.5; Cu＜0.2; Mn＜0.1; Other element separately＜0.05 and amount to＜0.15, residue is Al, the ultimate tensile strength R during thickness＞9 μ m under the annealing tempering mR when＞110MPa, thickness are 6-9 μ m m＞100MPa.
2. according to the strip or the paper tinsel of claim 1, it is characterized in that described strip or the paper tinsel ultimate tensile strength R under the annealing tempering when thickness＞9 μ m m＞115MPa.
3. according to the strip or the paper tinsel of claim 1 or 2, it is characterized in that the yielding stress R of described strip or paper tinsel 0.2＞70MPa.
4. according to strip any among the claim 1-3 or paper tinsel, the elongation limit A that it is characterized in that described strip or paper tinsel is the function of thickness, and is as follows:
Thickness (μ m) A (%) greater than Be preferably greater than 6-9 3 4 9-15 5 7 15-25 10 15 25-50 18 25 50-200 20 25
5. according to strip any among the claim 1-4 or paper tinsel, what it is characterized in that described alloy consists of Si/Fe 〉=0.95.
6. according to strip any among the claim 1-5 or paper tinsel, the silicone content that it is characterized in that described alloy is that 1.1%-1.3% and its iron level are 1.0%-1.2%.
7. the manufacture method of strip, described strip thickness is made less than 200 μ m and by the Al-Fe-Si alloy with following composition (weight %):
Si:1.0-1.5; Fe:1.0-1.5; Cu＜0.2; Mn＜0.1; Other element separately＜0.05 and amount to＜0.15; Remaining is Al,
Described method comprises by the vertical D.C.casting of sheet material and hot rolling or by hot rolled continuous casting subsequently and prepares initial strip, this initial strip is cold-rolled to final thickness, simultaneously can under 250 ℃-350 ℃, preferred 280 ℃-340 ℃ temperature, carry out process annealing, and under 200 ℃-370 ℃ temperature, carry out final annealing.
8. according to the method for claim 7, what it is characterized in that described alloy consists of Si/Fe 〉=0.95.
9. according to the method for claim 7 or 8, it is characterized in that described initial strip being homogenized before cold rolling under 450 ℃ of-500 ℃ of temperature.
10. according to method any among the claim 7-9, it is characterized in that described band is by continuous double-roller casting preparation.
CNB2004800210038A 2003-07-21 2004-07-19 Thin strips or foils of alfesi alloy Expired - Fee Related CN100445405C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0308864A FR2857981A1 (en) 2003-07-21 2003-07-21 Thin sheet or strip of aluminum alloy for bottle caps and wrapping foil has a thickness of less than 200 microns, is essentially free of manganese, and has increased mechanical strength
FR03/08864 2003-07-21

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CN1997763A true CN1997763A (en) 2007-07-11
CN100445405C CN100445405C (en) 2008-12-24

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CN101899596A (en) * 2008-10-07 2010-12-01 美铝公司 Feedstock for metal foil product and method of making thereof
CN102245788A (en) * 2009-03-05 2011-11-16 东洋铝株式会社 Aluminum alloy foil for current collector and method for producing the same
US8381796B2 (en) 2007-04-11 2013-02-26 Alcoa Inc. Functionally graded metal matrix composite sheet
CN117568667A (en) * 2024-01-15 2024-02-20 中铝材料应用研究院有限公司 Aluminum foil material and preparation method thereof
CN117568668A (en) * 2024-01-15 2024-02-20 中铝材料应用研究院有限公司 Aluminum plastic film aluminum foil blank and preparation method thereof

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US8403027B2 (en) * 2007-04-11 2013-03-26 Alcoa Inc. Strip casting of immiscible metals
US8956472B2 (en) * 2008-11-07 2015-02-17 Alcoa Inc. Corrosion resistant aluminum alloys having high amounts of magnesium and methods of making the same
KR101308963B1 (en) 2011-07-22 2013-09-25 한국생산기술연구원 Diecasting aluminum alloy for radiator grille
EP2943335B1 (en) * 2013-01-09 2019-12-04 Albea Americas, Inc. Layered materials comprising aluminum foil and tubes made therefrom
EP3235916B1 (en) 2016-04-19 2018-08-15 Rheinfelden Alloys GmbH & Co. KG Cast alloy

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US8381796B2 (en) 2007-04-11 2013-02-26 Alcoa Inc. Functionally graded metal matrix composite sheet
CN101899596A (en) * 2008-10-07 2010-12-01 美铝公司 Feedstock for metal foil product and method of making thereof
CN106435285A (en) * 2008-10-07 2017-02-22 美铝公司 A feedstock for metal foil product and method of making thereof
CN102245788A (en) * 2009-03-05 2011-11-16 东洋铝株式会社 Aluminum alloy foil for current collector and method for producing the same
CN102245788B (en) * 2009-03-05 2013-10-23 东洋铝株式会社 Aluminum alloy foil for current collector and method for producing same
CN117568667A (en) * 2024-01-15 2024-02-20 中铝材料应用研究院有限公司 Aluminum foil material and preparation method thereof
CN117568668A (en) * 2024-01-15 2024-02-20 中铝材料应用研究院有限公司 Aluminum plastic film aluminum foil blank and preparation method thereof
CN117568667B (en) * 2024-01-15 2024-04-19 中铝材料应用研究院有限公司 Aluminum foil material and preparation method thereof
CN117568668B (en) * 2024-01-15 2024-04-26 中铝材料应用研究院有限公司 Aluminum plastic film aluminum foil blank and preparation method thereof

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NO338970B1 (en) 2016-11-07
UA80778C2 (en) 2007-10-25
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