EP1644545B1 - Dünne bänder oder bleche aus einer al-fe-si-legierung - Google Patents

Dünne bänder oder bleche aus einer al-fe-si-legierung Download PDF

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Publication number
EP1644545B1
EP1644545B1 EP04767726A EP04767726A EP1644545B1 EP 1644545 B1 EP1644545 B1 EP 1644545B1 EP 04767726 A EP04767726 A EP 04767726A EP 04767726 A EP04767726 A EP 04767726A EP 1644545 B1 EP1644545 B1 EP 1644545B1
Authority
EP
European Patent Office
Prior art keywords
alloy
mpa
thickness
foil
composition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04767726A
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English (en)
French (fr)
Other versions
EP1644545A2 (de
Inventor
Armelle Danielou
Jean-Marie Feppon
Bruno Chenal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novelis Inc Canada
Original Assignee
Novelis Inc Canada
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Filing date
Publication date
Application filed by Novelis Inc Canada filed Critical Novelis Inc Canada
Priority to PL04767726T priority Critical patent/PL1644545T3/pl
Publication of EP1644545A2 publication Critical patent/EP1644545A2/de
Application granted granted Critical
Publication of EP1644545B1 publication Critical patent/EP1644545B1/de
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Classifications

    • 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

Definitions

  • the invention relates to thin sheets or strips with a thickness of less than 200 ⁇ m, and preferably 50 ⁇ m, made of aluminum alloy with iron and silicon, substantially free of manganese, and a method of manufacturing such leaves or strips.
  • These strips can be obtained by semi-continuous casting of conventional plates or by continuous casting, for example the continuous casting between belts ("twin-belt casting") or between cylinders ("twin-roll casting”).
  • the mechanical characteristics can also be improved by the addition of manganese in small quantities in iron-loaded 8000 series alloys.
  • the patent application WO 02/64848 (Alcan International) describes the continuous casting of thin strips of AlFeSi alloy containing from 1.2 to 1.7% Fe and from 0.35 to 0.8% Si. high mechanical strength by adding to the alloy from 0.07 to 0.20% manganese. This addition of manganese is recognized as necessary to obtain a small grain size after the final annealing.
  • manganese in solid solution or in the form of fine precipitates can block or delay the recrystallization during the final annealing. It is therefore necessary to precisely control the precipitation of the phases containing manganese during each step of the range, which is often difficult. Any drift in the transformation range has significant consequences on the effectiveness of the final annealing. It is therefore very interesting to develop an alloy that does not contain manganese, but nevertheless has high mechanical characteristics.
  • US Pat. Nos. 5,503,689 discloses a process for manufacturing a thin alloy strip containing from 0.30 to 1.1% Si and from 0.40 to 1.0% Fe, less than 0.25% Cu. and less than 0.1% Mn, by continuous casting and cold rolling without intermediate annealing.
  • the preferred levels of iron and silicon are between 0.6 and 0.75%.
  • US Patent 5,725,695 discloses for the same compositional range a range with intermediate annealing between 400 and 440 ° C (750 - 825 ° F) and final recrystallization annealing at 288 ° C (550 ° F).
  • the ratio of Si / Fe contents is equal to or greater than 1.
  • the maximum ultimate tensile strength obtained is 90 MPa (13.13 ksi)
  • the maximum yield strength is 39.1 MPa (5.68 ksi)
  • the elongation is 11.37% for thicknesses of 46 ⁇ m (0.00185 ').
  • the patent application WO 99/23269 (Nippon Light Metal and Alcan International) describes a process applicable to AlFeSi alloys containing from 0.2 to 1% Si and from 0.3 to 1.2% Fe, with a Si / Fe ratio. between 0.4 and 1.2, wherein the intermediate annealing is carried out in two stages, the first between 350 and 450 ° C, the second between 200 and 330 ° C.
  • the purpose of this method is to reduce the surface defects of the sheet. Mechanical characteristics are not mentioned.
  • the object of the invention is to obtain thin sheets or strips of AlFeSi alloy without the addition of manganese, having a high mechanical strength, while maintaining a good formability, with an industrial manufacturing range that is as economical as possible.
  • the thin sheets or strips according to the invention are manufactured from 8000 AlSiFe alloys substantially free of manganese, with a content typically less than 0.1%.
  • the iron and silicon contents are significantly higher than those of alloys 8011 and 8111, which are the AlSiFe alloys for the most commonly used manganese-free thin sheets.
  • a preferred composition domain is an alloy containing 1.1 to 1.3% silicon and 1.0 to 1.2% iron.
  • the alloys according to the invention should preferably have a composition such that the Si / Fe ratio of the respective silicon and iron contents is ⁇ 0.95. They have, in the annealed state (state O), an unusual mechanical strength for alloys of this composition, with a breaking strength R m > 110 MPa, or even 115 MPa, for thicknesses> 9 ⁇ m and> 100 MPa for thicknesses from 6 to 9 ⁇ m, and a yield strength of 0.2% R 0.2 > 70 MPa. This high mechanical strength is not obtained at the expense of formability, since, with respect to alloys 8011 or 8111, the elongations are at least the same, and the burst pressures are increased.
  • the hot-rolled or untreated tapes are optionally subjected to a low-temperature homogenization (between 450 and 500 ° C) to reduce the central segregation which may be a source of a reduction in the formability at final thickness.
  • This low-temperature heat treatment is sufficient to reduce the possible central segregations in these alloys without manganese.
  • the strips are then cold rolled, either to the final thickness, or to an intermediate thickness of between 0.5 and 5 mm, to which they are subjected to an intermediate annealing.
  • the Applicant has found that the application to an AlFeSi alloy, more particularly to a composition such as Si / Fe ⁇ 0.95, of low temperature heat treatments, possibly with the suppression of the intermediate annealing when it is technically possible, leads to a significantly improved mechanical strength, at least 15% compared to the usual intermediate annealing. This superior mechanical strength is obtained while improving the formability measured by burst pressure or dome height according to ISO 2758.
  • the final annealing is carried out at a temperature of between 200 and 370 ° C. for a duration of between 1 and 72 hours.
  • the annealing times are conditioned by the quality of the degreasing of the sheet.
  • a fine grain structure with an average grain size, measured by scanning electron microscope image analysis, of less than 3 ⁇ m is obtained.
  • the conjunction of a homogenization at low temperature or a lack of homogenization and an intermediate annealing at low temperature or completely suppressed, in addition to its economic advantage, is favorable to obtaining a fine size of grains.
  • the grain size is reduced by about 30% compared with heat treatments at higher temperatures, which leads to an increase in the mechanical characteristics R 0.2 and R m , which for thin thicknesses are related to the number of grain boundaries. This gain is not at the expense of elongation, as increasing the number of grains in the thickness also limits the risk of damage located in one or two single grains of the thickness of the sheet.
  • the thin sheets according to the invention are particularly suitable for applications requiring both a good mechanical strength and a high formability, such as for example the manufacture of multilayer complexes, in particular for the lids of fresh product packaging, overcap caps or of household aluminum.
  • Example 1 An alloy strip A of Example 1 with a thickness of 6.1 mm was cast in continuous casting between rolls. The strip was then cold rolled to a thickness of 2 mm. Part of the strip was subjected to a usual intermediate anneal for such a 5 hour alloy at 500 ° C. The other part of the strip has undergone an intermediate anneal according to the invention for 5 hours at 320 ° C. The two parts of the strip were then cold rolled in several passes until the final thickness of 10.5 microns. They were then subjected to a final annealing of 40 h at 270 ° C.
  • Example 3 The same properties as in Example 1 were measured, the values of which are given in Table 3: Table 3 Annealing inter R m (MPa) R 0.2 (MPa) AT (%) Pe (kPa) Hd (mm) 470 ° C 99 63 7.3 71 5.1 320 ° C 117 84 8.1 92 5.7 It is found that the lowering of the intermediate annealing temperature leads to both an increase in the mechanical strength, the elongation, the bursting strength and the formability.
  • the average grain size, measured by SEM image analysis, is 3.6 ⁇ m for annealing at 470 ° C, and 2.3 ⁇ m for annealing at 320 ° C.
  • the increase in the mechanical characteristics for the low temperature annealing is therefore related to a reduction in the grain size obtained after final annealing.

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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)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Metal Rolling (AREA)
  • Catalysts (AREA)

Claims (10)

  1. Dünne Folie oder Band mit einer Dicke von 6 bis 200 µm und vorzugsweise von 6 bis 50 µm aus einer Legierung der Zusammensetzung (in Gew.-%):
    Si: 1,0 - 1,5; Fe: 1,0 - 1,5; Cu: < 0,2; Mn: < 0,1; weitere Elemente: jeweils < 0,05 und insgesamt < 0,15; Rest: Al, welche im ausgeglühten Zustand eine Bruchbeständigkeit Rm > 110 MPa für Dicken > 9 µm und > 100 MPa für Dicken von 6 bis 9 µm aufweisen.
  2. Dünne Folie oder Band gemäß Anspruch 1, dadurch gekennzeichnet, dass sie im ausgeglühten Zustand eine Bruchbeständigkeit Rm > 115 MPa für Dicken > 9 µm aufweisen.
  3. Dünne Folie oder Band gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie im ausgeglühten Zustand eine Elastizitätsgrenze R0,2 > 70 MPa aufweisen.
  4. Dünne Folie oder Band gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass sie eine Bruchdehnung A als Funktion der Dicke aufweisen, und zwar: Dicke (µm) A (%) größer als: und vorzugsweise von: 6 - 9 3 4 9 - 15 5 7 15 - 25 10 15 25 - 50 18 25 50 - 200 20 25
  5. Dünne Folie oder Band gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Legierung eine Zusammensetzung von Si/Fe > 0,95 aufweist.
  6. Dünne Folie oder Band gemäß einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Legierung einen Siliziumgehalt von 1,1 bis 1,3 % und einen Eisengehalt von 1,0 bis 1,2 % aufweist.
  7. Verfahren zur Herstellung dünner Bänder mit einer Dicke von weniger als 200 µm aus einer Al-Fe-Si-Legierung der Zusammensetzung (in Gew.-%):
    Si: 1,0 - 1,5; Fe: 1,0 - 1,5; Cu: < 0,2; Mn: < 0,1; weitere Elemente: jeweils < 0,05 und insgesamt < 0,15; Rest: Al,
    wobei man ein erstes Band entweder mit einem halbkontinuierlichen vertikalen Gießverfahren einer Platte und einem Laminierverfahren in der Wärme oder mit einem kontinuierlichen Gießverfahren und gegebenenfalls einem anschließenden Laminierverfahren in der Wärme herstellt und man dieses erste Band zur Enddicke laminiert, wobei gegebenenfalls eine Zwischenglühstufe bei einer Temperatur von 250 bis 350°C und vorzugsweise von 280 bis 340°C und eine Endausglühstufe bei einer Temperatur von 200 bis 370° vorgesehen sind.
  8. Verfahren gemäß Anspruch 7, dadurch gekennzeichnet, dass die Legierung eine Zusammensetzung von Si/Fe ≥ 0,95 aufweist.
  9. Verfahren gemäß Anspruch 7 oder 8, dadurch gekennzeichnet, dass vor einer Kaltlaminierung das erste Band bei einer Temperatur von 450 bis 500°C homogenisiert wird.
  10. Verfahren gemäß einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass das Band mit einem kontinuierlichen Gießverfahren zwischen Zylindern hergestellt wird.
EP04767726A 2003-07-21 2004-07-19 Dünne bänder oder bleche aus einer al-fe-si-legierung Expired - Lifetime EP1644545B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04767726T PL1644545T3 (pl) 2003-07-21 2004-07-19 Folie lub cienkie taśmy ze stopu Al-Fe-Si

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0308864A FR2857981A1 (fr) 2003-07-21 2003-07-21 FEUILLES OU BANDES MINCES EN ALLIAGES AIFeSI
PCT/FR2004/001902 WO2005010222A2 (fr) 2003-07-21 2004-07-19 FEUILLES OU BANDES MINCES EN ALLIAGE AIFeSI

Publications (2)

Publication Number Publication Date
EP1644545A2 EP1644545A2 (de) 2006-04-12
EP1644545B1 true EP1644545B1 (de) 2007-02-28

Family

ID=33560962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04767726A Expired - Lifetime EP1644545B1 (de) 2003-07-21 2004-07-19 Dünne bänder oder bleche aus einer al-fe-si-legierung

Country Status (21)

Country Link
US (1) US20060213590A1 (de)
EP (1) EP1644545B1 (de)
JP (1) JP4989221B2 (de)
CN (1) CN100445405C (de)
AR (1) AR044882A1 (de)
AT (1) ATE355392T1 (de)
AU (1) AU2004259877A1 (de)
BR (1) BRPI0412775A (de)
CA (1) CA2532585A1 (de)
DE (1) DE602004005045T2 (de)
DK (1) DK1644545T3 (de)
EA (1) EA009227B1 (de)
ES (1) ES2281831T3 (de)
FR (1) FR2857981A1 (de)
NO (1) NO338970B1 (de)
PL (1) PL1644545T3 (de)
PT (1) PT1644545E (de)
SA (1) SA04250245B1 (de)
UA (1) UA80778C2 (de)
WO (1) WO2005010222A2 (de)
ZA (1) ZA200600425B (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7846554B2 (en) * 2007-04-11 2010-12-07 Alcoa Inc. Functionally graded metal matrix composite sheet
US8403027B2 (en) * 2007-04-11 2013-03-26 Alcoa Inc. Strip casting of immiscible metals
US20100084053A1 (en) * 2008-10-07 2010-04-08 David Tomes Feedstock for metal foil product and method of making thereof
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
CN102245788B (zh) * 2009-03-05 2013-10-23 东洋铝株式会社 集电体用铝合金箔及其制造方法
KR101308963B1 (ko) 2011-07-22 2013-09-25 한국생산기술연구원 방열판용 다이캐스팅 알루미늄 합금
EP2943335B1 (de) * 2013-01-09 2019-12-04 Albea Americas, Inc. Schichtmaterialien mit einer aluminiumfolie und rohre daraus
EP3235916B1 (de) 2016-04-19 2018-08-15 Rheinfelden Alloys GmbH & Co. KG Gusslegierung
CN117568667B (zh) * 2024-01-15 2024-04-19 中铝材料应用研究院有限公司 铝箔材料及其制备方法
CN117568668B (zh) * 2024-01-15 2024-04-26 中铝材料应用研究院有限公司 铝塑膜铝箔坯料和其制备方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0762223B2 (ja) * 1985-04-11 1995-07-05 古河電気工業株式会社 深絞りクロ−ジヤ−の製造法
US5503689A (en) * 1994-04-08 1996-04-02 Reynolds Metals Company General purpose aluminum alloy sheet composition, method of making and products therefrom
JP3107191B2 (ja) * 1994-11-16 2000-11-06 古河電気工業株式会社 平版印刷版用アルミニウム合金支持体の製造方法
US5714019A (en) * 1995-06-26 1998-02-03 Aluminum Company Of America Method of making aluminum can body stock and end stock from roll cast stock
US5725695A (en) * 1996-03-26 1998-03-10 Reynolds Metals Company Method of making aluminum alloy foil and product therefrom
JP4058536B2 (ja) * 1997-10-31 2008-03-12 日本軽金属株式会社 アルミニウム合金箔地の製造方法
AU740061B2 (en) * 1998-02-18 2001-10-25 Novelis Inc. Process of manufacturing high strength aluminum foil
US6531006B2 (en) * 2001-02-13 2003-03-11 Alcan International Limited Production of high strength aluminum alloy foils
FR2832497B1 (fr) * 2001-11-19 2004-05-07 Pechiney Rhenalu Bandes en alliage d'aluminium pour echangeurs thermiques
FR2836154B1 (fr) * 2002-02-15 2004-10-22 Pechiney Rhenalu Bandes minces en alliage aluminium-fer

Also Published As

Publication number Publication date
DE602004005045D1 (de) 2007-04-12
EA200600276A1 (ru) 2006-10-27
BRPI0412775A (pt) 2006-09-26
NO338970B1 (no) 2016-11-07
AU2004259877A1 (en) 2005-02-03
WO2005010222A3 (fr) 2006-07-20
CN1997763A (zh) 2007-07-11
FR2857981A1 (fr) 2005-01-28
WO2005010222A2 (fr) 2005-02-03
PT1644545E (pt) 2007-04-30
CN100445405C (zh) 2008-12-24
AR044882A1 (es) 2005-10-05
ATE355392T1 (de) 2006-03-15
DE602004005045T2 (de) 2007-11-15
ES2281831T3 (es) 2007-10-01
UA80778C2 (en) 2007-10-25
JP4989221B2 (ja) 2012-08-01
NO20060508L (no) 2006-01-31
JP2007502360A (ja) 2007-02-08
PL1644545T3 (pl) 2007-07-31
EP1644545A2 (de) 2006-04-12
EA009227B1 (ru) 2007-12-28
DK1644545T3 (da) 2007-06-18
US20060213590A1 (en) 2006-09-28
SA04250245B1 (ar) 2007-10-29
ZA200600425B (en) 2007-03-28
CA2532585A1 (fr) 2005-02-03

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