EP0714993B1 - Alliage d'aluminium du type AlMgSi soudable et apte à l'emboutissage profond - Google Patents

Alliage d'aluminium du type AlMgSi soudable et apte à l'emboutissage profond Download PDF

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Publication number
EP0714993B1
EP0714993B1 EP19950810691 EP95810691A EP0714993B1 EP 0714993 B1 EP0714993 B1 EP 0714993B1 EP 19950810691 EP19950810691 EP 19950810691 EP 95810691 A EP95810691 A EP 95810691A EP 0714993 B1 EP0714993 B1 EP 0714993B1
Authority
EP
European Patent Office
Prior art keywords
alloy
weight
max
annealing
deep
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
EP19950810691
Other languages
German (de)
English (en)
Other versions
EP0714993A1 (fr
Inventor
Peter Furrer
Jürgen Timm
Margarete Bloeck
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.)
3A Composites International AG
Original Assignee
Alusuisse Lonza Services Ltd
Alusuisse Technology and Management Ltd
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4259491&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0714993(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Alusuisse Lonza Services Ltd, Alusuisse Technology and Management Ltd filed Critical Alusuisse Lonza Services Ltd
Publication of EP0714993A1 publication Critical patent/EP0714993A1/fr
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Classifications

    • 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
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a deep-drawn and weldable AlMgSi type aluminum alloy in the form of strips or sheets and a process for their manufacture.
  • the inventor has the Task, an alloy of the type mentioned to create a good strength compared to alloys improved forming behavior according to the prior art with the least possible springback after deep drawing shows.
  • the alloy composition according to the invention enables the production of deep-drawn body parts with optimal Mechanical strength and Forming behavior.
  • zinc By adding 0.05 to 0.4% by weight, in particular 0.1 up to 0.3% by weight zinc can further increase the strength combined with a slight improvement in formability can be achieved.
  • the average grain size in the sheet should not exceed 80 ⁇ m and is preferably less than 60 microns.
  • the alloy according to the invention is carried out in the usual way Continuous or strip casting, hot and cold rolling into one Sheet or strip processed.
  • Continuous or strip casting hot and cold rolling into one Sheet or strip processed.
  • the solution annealing in one Continuous belt furnace in a temperature range of 520 ° C up to 580 ° C or up to the solidus temperature of the alloy is carried out.
  • Optimal mechanical strength values and properties can be achieved if the alloy is preferably at the latest 60 min after the solution annealing of a so-called stabilization annealing of a maximum of 24h in a temperature range from 50 ° C to 150 ° C.
  • the alloy can be rolled to final thickness, solution annealed and then a temperature range of 160 ° C to 220 ° C can be thermoset. It is advantageous also a maximum of 25% deformation after solution annealing and before final annealing in the temperature range mentioned.
  • the alloy according to the invention is particularly suitable for the production of deep-drawn body parts.

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)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Continuous Casting (AREA)

Claims (8)

  1. Alliage d'aluminium apte à l'emboutissage profond et au soudage, du type AlMgSI, sous forme de bandes ou de tôles,
       caractérisé par le fait
       que l'alliage contient 0,55 - 0,70 % en poids Si 0,35 - 0,45 % en poids Mg 0.2 - 0,4 % en poids Cu
       et facultativement encore max. 0,15 % en poids Mn max. 0,25 % en poids Fe 0,05 - 0,4 % en poids Zn 0,05 - 0,2 % en poids V
       ainsi que les impuretés habituelles, chacune max 0,05, au total max. 0,15, et l'aluminium pour le reste.
  2. Alliage selon la revendication 1, caractérisé par le fait qu'il contient 0,1 à 0,3% en poids de Zn.
  3. Alliage selon la revendication 1 ou 2, caractérisé par le fait que la granulométrie moyenne vaut max. 80 µm, de préférence max. 60 µm.
  4. Procédé de fabrication d'un alliage conforme à l'une des revendications 1 à 3 par coulée continue ou coulée en bande, laminage à chaud et à froid, caractérisé par le fait que l'on procède à un recuit de mise en solution dans un four à passage de bande sur une plage de température allant de 520°C à 580°C ou jusqu'à la température du solidus de l'alliage.
  5. Procédé selon la revendication 1, caractérisé par le fait qu'après le recuit de mise en solution, de préférence au plus tard 60 minutes après le recuit de mise en solution, on soumet l'alliage à un recuit de stabilisation d'au maximum 24 heures sur une plage de température allant de 50°C à 150°C.
  6. Procédé selon la revendication 4 ou 5, caractérisé par le fait qu'après le recuit de mise en solution on fait subir à l'alliage un formage d'au maximum 25% et qu'ensuite on lui fait subir une trempe sur une plage de température allant de 160°C à 220°C.
  7. Procédé selon la revendication 6, caractérisé par le fait que l'on procède au recuit final sous forme de cuisson de la laque.
  8. Emploi d'un alliage conforme à l'une des revendications 1 à 3 pour fabriquer des pièces de carrosserie par emboutissage profond.
EP19950810691 1994-11-29 1995-11-03 Alliage d'aluminium du type AlMgSi soudable et apte à l'emboutissage profond Expired - Lifetime EP0714993B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH3600/94 1994-11-29
CH03600/94A CH688379A5 (de) 1994-11-29 1994-11-29 Tiefziehbare und schweissbare Aluminiumlegierung vom Typ AlMgSi
CH360094 1994-11-29

Publications (2)

Publication Number Publication Date
EP0714993A1 EP0714993A1 (fr) 1996-06-05
EP0714993B1 true EP0714993B1 (fr) 2000-03-08

Family

ID=4259491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950810691 Expired - Lifetime EP0714993B1 (fr) 1994-11-29 1995-11-03 Alliage d'aluminium du type AlMgSi soudable et apte à l'emboutissage profond

Country Status (3)

Country Link
EP (1) EP0714993B1 (fr)
CH (1) CH688379A5 (fr)
DE (1) DE59507951D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH690916A5 (de) * 1996-06-04 2001-02-28 Alusuisse Tech & Man Ag Tiefziehbare und schweissbare Aluminiumlegierung vom Typ AlMgSi.
AUPO084796A0 (en) 1996-07-04 1996-07-25 Comalco Aluminium Limited 6xxx series aluminium alloy
EP0931170A1 (fr) * 1996-09-30 1999-07-28 Alcan International Limited Alliage d'aluminium destine a la fabrication de produits lamines
CH693673A5 (de) * 1999-03-03 2003-12-15 Alcan Tech & Man Ag Verwendung einer Aluminiumlegierung vom Typ AlMgSi zur Herstellung von Strukturbauteilen.
DE102004022817A1 (de) * 2004-05-08 2005-12-01 Erbslöh Ag Dekorativ anodisierbare, gut verformbare, mechanisch hoch belastbare Aluminiumlegierung, Verfahren zu deren Herstellung und Aluminiumprodukt aus dieser Legierung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082578A (en) * 1976-08-05 1978-04-04 Aluminum Company Of America Aluminum structural members for vehicles
FR2601040B1 (fr) * 1986-07-07 1988-09-02 Cegedur Alliage d'aluminium chaudronnable et soudable et son procede de fabrication
FR2617188B1 (fr) * 1987-06-23 1989-10-20 Cegedur Alliage a base d'al pour boitage et procede d'obtention
JPH0674480B2 (ja) * 1987-09-03 1994-09-21 本田技研工業株式会社 溶接性、耐糸錆性、成形性及び焼付硬化性に優れた成形用及び溶接用Ａ▲ｌ▼合金板及びその製造法
FR2642436B1 (fr) * 1988-12-21 1991-06-14 Pechiney Rhenalu Alliage d'a1 contenant essentiellement du si, du mg et du cu pour emboutissage
JPH0441648A (ja) * 1990-06-07 1992-02-12 Sumitomo Light Metal Ind Ltd 焼付硬化性に優れた成形加工用高強度アルミニウム合金
JPH0570908A (ja) * 1991-05-01 1993-03-23 Sumitomo Light Metal Ind Ltd 成形加工用アルミニウム合金材の製造法
CH685707A5 (de) * 1991-12-16 1995-09-15 Alusuisse Lonza Services Ag Karosserieblech.
JPH05279780A (ja) * 1992-03-31 1993-10-26 Furukawa Alum Co Ltd 曲げ加工性に優れた中強度アルミニウム合金およびその製造方法
FR2713664B1 (fr) * 1993-11-17 1996-05-24 Pechiney Rhenalu Alliage type Al-Si-Mg à ductilité et emboutissabilité améliorées et procédé d'obtention.

Also Published As

Publication number Publication date
DE59507951D1 (de) 2000-04-13
CH688379A5 (de) 1997-08-29
EP0714993A1 (fr) 1996-06-05

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