WO1997041272A1 - Alliage aluminium-silicium-magnesium pour carrosserie automobile - Google Patents

Alliage aluminium-silicium-magnesium pour carrosserie automobile Download PDF

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Publication number
WO1997041272A1
WO1997041272A1 PCT/FR1997/000755 FR9700755W WO9741272A1 WO 1997041272 A1 WO1997041272 A1 WO 1997041272A1 FR 9700755 W FR9700755 W FR 9700755W WO 9741272 A1 WO9741272 A1 WO 9741272A1
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WO
WIPO (PCT)
Prior art keywords
alloys
alloy
temperature
composition
strip
Prior art date
Application number
PCT/FR1997/000755
Other languages
English (en)
French (fr)
Inventor
Jean-Christophe Ehrström
Christophe Sigli
Georges Pillet
Original Assignee
Pechiney Rhenalu
Kaiser Aluminium & Chemical Corporation
The Furukawa Electric Co., Ltd.
Kawasaki Steel Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9491836&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1997041272(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Pechiney Rhenalu, Kaiser Aluminium & Chemical Corporation, The Furukawa Electric Co., Ltd., Kawasaki Steel Corporation filed Critical Pechiney Rhenalu
Priority to DE69702133T priority Critical patent/DE69702133T3/de
Priority to EP97921897A priority patent/EP0896637B2/de
Publication of WO1997041272A1 publication Critical patent/WO1997041272A1/fr

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Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/043Changing 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
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/02Alloys based on aluminium with silicon as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/12Alloys based on aluminium with copper as the next major constituent
    • C22C21/14Alloys based on aluminium with copper as the next major constituent with silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/12Alloys based on aluminium with copper as the next major constituent
    • C22C21/16Alloys based on aluminium with copper as the next major constituent with magnesium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/057Changing 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 copper as the next major constituent

Definitions

  • the invention relates to the field of aluminum alloys of the AlSiMg type, or alloys of the 6000 series according to the classification of the Alurninum Association, intended in particular for the manufacture of automobile body parts, for which the final income of the alloying is done during the paint curing operation.
  • AlSiMg type alloy sheets have been used for many years for the manufacture of exterior elements of automobile bodywork because they have good formability before hardening, an absence of L ⁇ ders lines when stamping and high mechanical strength after treatment.
  • thermal including dissolution, quenching, maturation and hardening income can advantageously be done during the curing operation of the paint applied to the bodywork element, which saves a specific treatment. This is usually referred to as the baking hardening or baking hardening effect.
  • Many alloys have been developed for this application.
  • US patent 4082778 of ALCOA describes alloys for automobile bodywork of composition (% by weight): Si: 0.4 - 1.2 Mg: 0.4 - 1.1 Cu: 0.1 - 0.6 Fe: 0.05 - 0.35 with the addition of one or more of the elements Mn, Cr or Zr. Alloys of this type have been registered with the Aluminum Association under the designations 6009 and 6010. The hardening income of these alloys is suitably carried out between 190 and 205 ° C.
  • Patent US 4589932 also from ALCOA, relates to an alloy, subsequently registered under the designation AA 6013, of composition.
  • US Patent 4,614,552 to ALCAN relates to the alloy AA 61 11 of composition: Si: 0.6 - 1.0 Mg: 0.62 - 0.82 Cu: 0.65 - 0.79 Mn: 0, 1 - 0.5 Fe ⁇ 0.4
  • This alloy has a mechanical resistance greater than 6009 and a formability greater than 6010, as well as a good response to the curing by curing of the paint, which the patent recommends performing for approximately 1 h between 177 and 204 ° C.
  • Figure 2 of the patent compares, for alloys 6009, 6010 and 611 1, the curves of the elastic limit as a function of the curing temperature at different deformation rates, and clearly shows that at 150 ° C, the curing has not yet started in any of the cases shown and it only begins to be significant beyond 180 ° C.
  • ALCOA patent US 4,840,852 relates to an alloy with a higher copper content, which explains its designation AA 2008 in the category of Al-Cu alloys of the 2000 series. It has the composition: Si: 0.5 - 0, 85 Mg: 0.25 - 0.55 Cu: 0.75 - 1.10 Fe: 0.05 - 0.4.
  • the preferred range for tempering is 177 - 218 ° C, and more specifically, the range 190 - 204 ° C.
  • the only example indicates an income at 204 ° C.
  • the international application WO 95/14113 of the applicant relates to a range of alloys of composition: Si: 0.5 - 1.3 Mg: 0.25 - 0.8 Cu ⁇ 0.9
  • Mn 0.1 - 0.8 Fe ⁇ 0.5
  • Al (Mn, Fe) Si type 0.1 - 0.8 Fe ⁇ 0.5
  • the examples all indicate an income of 30 min at 180 ° C.
  • the aim of the present invention is to select, in Al-Si-Mg-Cu alloys, a narrow range of composition which makes it possible both to achieve sufficient mechanical strength after baking at 150 - 155 ° C and to set the alloy in solution easily.
  • the subject of the invention is an alurninhun alloy suitable for being used for the manufacture of exterior parts of an automobile body, of composition (% by weight): Si: 0.5 -0 8 Mg: 0.45 - 0.65 Cu: 0.55 - 0.75 Mn and / or Cr: 0.1-0.3 with: 1.6 ⁇ Si + Mg + Cu ⁇ 2
  • Mg is between 0.50 and 0.60% and Cu between 0.60 and 0.70%.
  • the range of composition of the alloys according to the invention is, for Si and Mg, within the range 6009/6010, but with a higher copper content. Compared to the field of 6111, it is less loaded with magnesium, while on the contrary it is more compared to 2008. But its main characteristic is to have, compared to recent body alloys with high resistance and good formability, a lower total quantity of addition elements, represented by the sum Si + Mg + Cu. This feature makes it possible to carry out homogenization and dissolving under easier conditions, but, in the narrow composition field of the invention, this reduction does not lead, as might have been expected, a reduction in the mechanical resistance on the finished part after a short dissolution and an income practiced during a curing of paint at around 150 ° C.
  • the alloy according to the invention is cast in the form of plates, homogenized between 500 and 580 ° C, hot rolled to a thickness between 10 and 3 mm, then drizzled to cold to the final thickness, generally included, for automotive body applications, between 0.8 and 1.5 mm Annealing from 1 h to 10 h between 300 and 500 ° C can be applied to the strip after hot rolling or during cold rolling.
  • the strip is dissolved between 500 and 560 ° C for a period of between 20 s and 2 min. It is followed by quenching and maturing at room temperature for more than a week.
  • the bodywork parts are subjected to an operation of baking the paint at a temperature below 170 ° C, most often around 150 ° C, and the income caused by this cooking, an elastic limit Ro , 2 > 170 MPa can be reached on the part.
  • the compositions according to the invention thus lead to complete dissolution, favorable to the formability of the sheet, over a period of time compatible with industrial productivity requirements.
  • the mechanical resistance, after this short dissolution and an income associated with a firing of the paints at 150 to 155 ° C is of the same order, and even sometimes better, than that of alloys of the prior art yet more loaded with elements of addition.
  • Plates were cast in format 30 x 180 x 250 mm of 6 alloys, the composition of which is indicated in Table 1 (in% by weight).
  • alloys A and B are in accordance with the invention, the sum Si + Mg + Cu being 1.71 and 1.91 respectively.
  • Alloy F, of type AA 6013 has an Mg content> 0.65.
  • the plates were homogenized for 24 h at a temperature of 555 ° C for the alloy C and 570 ° C for the other 5.
  • the efficiency of this homogenization can be assessed, in a manner known per se, by a differential enthalpy analysis (AED) on the homogenized plates. Indeed, if the homogenization is well done, this analysis leads to low peak areas (measured in J / g) and to high peak start temperatures.
  • AED differential enthalpy analysis
  • the plates then followed a simulated annealing of the hot rolling by maintaining for 9 h at 500 ° C and cooling at a speed of 25 ° C / h.
  • a cold rolling was then carried out to the thickness of 1 mm i and then dissolved in a salt bath, partly at 550 ° C, and partly at 525 ° C, for respective durations of 30, 60, 300 and 1800 s, and finally to a hardening.
  • the quality of the solution can be assessed by differential enthalpy analysis of the samples in solution. The results of this analysis are as follows for a dissolution of 30 s at 550 ° C. (Table 3):
  • the 2 alloys according to the invention have a peak area less than the other 4, which shows better dissolution.
  • the elastic limit of alloy A is of the same order as that of D, and that of B is greater than that of C and D, while the alloys A and B are less loaded with addition elements than alloys C and
  • alloy A has the same level of elastic limit as alloys C, D and F, while it is clearly less loaded with hardening additives, and that, surprisingly, the alloy B has a higher yield strength than that of alloys C to F.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Conductive Materials (AREA)
  • Paints Or Removers (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Cookers (AREA)
PCT/FR1997/000755 1996-04-29 1997-04-28 Alliage aluminium-silicium-magnesium pour carrosserie automobile WO1997041272A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE69702133T DE69702133T3 (de) 1996-04-29 1997-04-28 Verwendung einer aluminium-silizium-magnesium-legierung zur herstellung von fahrzeugkarrosserieteilen und verfahren dieser herstellung.
EP97921897A EP0896637B2 (de) 1996-04-29 1997-04-28 Verwendung einer aluminium-silizium-magnesium-legierung zur herstellung von fahrzeugkarrosserieteilen und verfahren dieser herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR96/05595 1996-04-29
FR9605595A FR2748035B1 (fr) 1996-04-29 1996-04-29 Alliage aluminium-silicium-magnesium pour carrosserie automobile

Publications (1)

Publication Number Publication Date
WO1997041272A1 true WO1997041272A1 (fr) 1997-11-06

Family

ID=9491836

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1997/000755 WO1997041272A1 (fr) 1996-04-29 1997-04-28 Alliage aluminium-silicium-magnesium pour carrosserie automobile

Country Status (5)

Country Link
EP (1) EP0896637B2 (de)
DE (1) DE69702133T3 (de)
ES (1) ES2146467T5 (de)
FR (1) FR2748035B1 (de)
WO (1) WO1997041272A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2096187A1 (de) 2008-02-28 2009-09-02 Georg Fischer Engineering AG Verfahren zum gleichzeitigen Wärmebehandeln und Beschichten eines Aluminiumbauteils sowie nach dem Verfahren hergestelltes Bauteil
WO2021130636A1 (en) * 2019-12-23 2021-07-01 Aleris Rolled Products Germany Gmbh Method of manufacturing an aluminium alloy rolled product

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2855083B1 (fr) * 2003-05-20 2006-05-26 Pechiney Rhenalu Procede de fabrication de pieces en alliage d'aluminium soudees par friction
FR2856368B1 (fr) * 2003-06-18 2005-07-22 Pechiney Rhenalu Piece de peau de carrosserie automobile en tole d'alliage ai-si-mg fixee sur structure acier
DE102004035043A1 (de) * 2004-07-20 2006-04-13 Daimlerchrysler Ag Verfahren zum Umformen eines Leichtmetall-Blechs und entsprechendes Leichtmetall-Blechbauteil

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2601040A1 (fr) * 1986-07-07 1988-01-08 Cegedur Alliage d'aluminium chaudronnable et soudable et son procede de fabrication
EP0375572A1 (de) * 1988-12-21 1990-06-27 Pechiney Rhenalu Tiefziehbare Aluminiumlegierung, die Silicium, Magnesium und Kupfer enthält
JPH05125506A (ja) * 1991-10-31 1993-05-21 Furukawa Alum Co Ltd 焼付け硬化性成形用アルミニウム合金板の製造方法
JPH05306440A (ja) * 1992-04-30 1993-11-19 Furukawa Alum Co Ltd 焼付硬化性に優れた成形用アルミニウム合金板の製造方法
JPH06240424A (ja) * 1993-02-18 1994-08-30 Sky Alum Co Ltd 成形性および焼付硬化性に優れたアルミニウム合金板の製造方法
WO1995014113A1 (fr) * 1993-11-17 1995-05-26 Pechiney Rhenalu Alliage de type aluminium-silicon-magnesium a ductilite et emboutissabilite ameliorees et procede d'obtention
WO1995018244A1 (fr) * 1993-12-28 1995-07-06 The Furukawa Electric Co., Ltd Procede de fabrication d'une tole d'alliage d'aluminium a haute formabilite
EP0687743A1 (de) * 1994-06-16 1995-12-20 The Furukawa Electric Co., Ltd. Verstärkungsmaterial aus Aluminium-Legierung für Stossfänger und Verfahren zur Herstellung
WO1996003531A1 (en) * 1994-07-22 1996-02-08 Alcan International Limited Aluminum alloys and process for making aluminum alloy sheet
WO1996038598A1 (en) * 1995-05-30 1996-12-05 Kaiser Aluminum & Chemical Corporation Processing aluminium articles for improved bake hardenability

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3682059D1 (de) * 1985-11-04 1991-11-28 Aluminum Co Of America Fahrzeugteil aus aluminiumlegierung.
JP2700838B2 (ja) * 1991-01-25 1998-01-21 スカイアルミニウム株式会社 自動車ホイールリム用のロール成形加工用アルミニウム合金圧延板の製造方法
JP3443866B2 (ja) * 1993-04-02 2003-09-08 ヤマハ株式会社 ペダル鍵盤構造

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2601040A1 (fr) * 1986-07-07 1988-01-08 Cegedur Alliage d'aluminium chaudronnable et soudable et son procede de fabrication
EP0375572A1 (de) * 1988-12-21 1990-06-27 Pechiney Rhenalu Tiefziehbare Aluminiumlegierung, die Silicium, Magnesium und Kupfer enthält
JPH05125506A (ja) * 1991-10-31 1993-05-21 Furukawa Alum Co Ltd 焼付け硬化性成形用アルミニウム合金板の製造方法
JPH05306440A (ja) * 1992-04-30 1993-11-19 Furukawa Alum Co Ltd 焼付硬化性に優れた成形用アルミニウム合金板の製造方法
JPH06240424A (ja) * 1993-02-18 1994-08-30 Sky Alum Co Ltd 成形性および焼付硬化性に優れたアルミニウム合金板の製造方法
WO1995014113A1 (fr) * 1993-11-17 1995-05-26 Pechiney Rhenalu Alliage de type aluminium-silicon-magnesium a ductilite et emboutissabilite ameliorees et procede d'obtention
WO1995018244A1 (fr) * 1993-12-28 1995-07-06 The Furukawa Electric Co., Ltd Procede de fabrication d'une tole d'alliage d'aluminium a haute formabilite
EP0687743A1 (de) * 1994-06-16 1995-12-20 The Furukawa Electric Co., Ltd. Verstärkungsmaterial aus Aluminium-Legierung für Stossfänger und Verfahren zur Herstellung
WO1996003531A1 (en) * 1994-07-22 1996-02-08 Alcan International Limited Aluminum alloys and process for making aluminum alloy sheet
WO1996038598A1 (en) * 1995-05-30 1996-12-05 Kaiser Aluminum & Chemical Corporation Processing aluminium articles for improved bake hardenability

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 492 (C - 1107) 7 September 1993 (1993-09-07) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 114 (C - 1171) 24 February 1994 (1994-02-24) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 632 (C - 1280) 2 December 1994 (1994-12-02) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2096187A1 (de) 2008-02-28 2009-09-02 Georg Fischer Engineering AG Verfahren zum gleichzeitigen Wärmebehandeln und Beschichten eines Aluminiumbauteils sowie nach dem Verfahren hergestelltes Bauteil
WO2009106327A1 (de) * 2008-02-28 2009-09-03 Georg Fischer Engineering Ag Verfahren zum wärmebehandeln und beschichten eines bauteils sowie nach dem verfahren hergestelltes bauteil
WO2021130636A1 (en) * 2019-12-23 2021-07-01 Aleris Rolled Products Germany Gmbh Method of manufacturing an aluminium alloy rolled product

Also Published As

Publication number Publication date
EP0896637B2 (de) 2005-07-27
EP0896637B1 (de) 2000-05-24
ES2146467T5 (es) 2006-03-01
ES2146467T3 (es) 2000-08-01
DE69702133D1 (de) 2000-06-29
EP0896637A1 (de) 1999-02-17
FR2748035B1 (fr) 1998-07-03
DE69702133T3 (de) 2006-04-20
DE69702133T2 (de) 2000-11-09
FR2748035A1 (fr) 1997-10-31

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