EP1972695B1 - Procédé de fabrication d'un alliage d'aluminium - Google Patents

Procédé de fabrication d'un alliage d'aluminium Download PDF

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Publication number
EP1972695B1
EP1972695B1 EP20080002908 EP08002908A EP1972695B1 EP 1972695 B1 EP1972695 B1 EP 1972695B1 EP 20080002908 EP20080002908 EP 20080002908 EP 08002908 A EP08002908 A EP 08002908A EP 1972695 B1 EP1972695 B1 EP 1972695B1
Authority
EP
European Patent Office
Prior art keywords
weight
max
alloy
gew
aluminium
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.)
Active
Application number
EP20080002908
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German (de)
English (en)
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EP1972695A1 (fr
Inventor
Franz-Josef Dr. Klinkenberg
Johann Wolf
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1972695A1 publication Critical patent/EP1972695A1/fr
Application granted granted Critical
Publication of EP1972695B1 publication Critical patent/EP1972695B1/fr
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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
    • 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
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • C22C21/04—Modified aluminium-silicon alloys

Definitions

  • the invention relates to a method for producing an aluminum alloy, in particular for die casting.
  • AlSiMg alloys especially the AlSi9MgMnSr alloy, which are sold under different trade names such as "Silafont 36", "Aural 2" and the like, are mostly used for the production of die-cast components (see, for example, the document: Koch H. et al. : “Silafont - 36 - The new low-iron high pressure casting alloy", Light Metals, 1995, pages 1011-1018 .).
  • the iron is largely replaced by manganese.
  • improvements in elongation are expected due to the reduced iron content and strontium addition.
  • these die cast alloys are characterized not only by excellent castability but also by very good elongation in the cast state, maximum elongation after heat treatment and, moreover, by very good corrosion resistance.
  • the object of the invention is therefore to provide a simple process for producing an AlSi9MgMnSr alloy which has at least as good properties as the commercially available AlSi9MgMnSr alloys.
  • the master alloy is an aluminum alloy which contains the remaining manganese, the entire strontium and optionally iron and possibly the remaining magnesium of the aluminum alloy to be produced, ie an AlMnSr alloy which optionally additionally contains Fe and / or Mg, ie B an AlMnSrFe, AlMnSrMg or AlMnSrFeMg alloy.
  • the manganese content of the master alloy is selected such that the manganese content in the alloy to be produced within wide limits of 0.3 to 1 wt.% Can be adjusted taking into account the burnup in the base alloy.
  • the strontium content of the master alloy is selected so that the strontium content in the alloy to be produced is 50-300, preferably 150-250 ppm.
  • the die cast alloy thus produced has the same properties as the commercial AlSi9MgMnSr die cast alloys. It is at least equivalent to commercially available AlSi9MgMnSr die-cast alloys both in terms of joining technology and in terms of their dynamic and static properties.
  • the method according to the invention it is possible to economically convert a commercially available base alloy into a high-quality die casting variant without accepting metallurgical problems.
  • the die-cast alloy produced by the process according to the invention can be used particularly well in motor vehicle and engine construction.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Continuous Casting (AREA)

Claims (2)

  1. Procédé de fabrication d'un alliage d'aluminium ayant la composition suivante :
    9,5 à 11,5 % en poids de silicium,
    0,3 à 1,0 % en poids de manganèse,
    0,1 à 0,5 % en poids de magnésium,
    max. 0,25 % en poids de fer,
    max. 0,15 % en poids de titane,
    max. 0,10 % en poids de zinc,
    max. 0,05 % en poids de cuivre,
    50 - 300 ppm de strontium, et le complément est de l'aluminium et des impuretés séparées, représentant au maximum 0,03 % en poids et au total au maximum 0,1 % en poids,
    procédé caractérisé en ce que
    l'alliage de base d'aluminium fondu, a la composition suivante :
    9,0 à 12,5 % en poids de silicium,
    0,1 à 0,45 % en poids de magnésium,
    max. 0,25 % en poids de fer,
    max. 0,15 % en poids de titane,
    max. 0,10 % en poids de zinc,
    max. 0,10 % en poids de manganèse
    max. 0,05 % en poids de cuivre,
    l'aluminium et les impuretés représentent isolément au maximum 0,03 % en poids et en tout, un maximum de 0,1 % en poids,
    on ajoute un pré-alliage d'aluminium qui contient le reste de manganèse, tout le strontium et le cas échéant du fer et du magnésium, suivant une quantité telle que l'on obtienne un alliage d'aluminium ayant la composition définie ci-dessus.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    l'alliage d'aluminium à fabriquer contient de 0,4 à 0,8 % en poids de manganèse, 0,3 à 0,5 % en poids de magnésium et/ou 150/250 ppm de strontium.
EP20080002908 2007-03-15 2008-02-16 Procédé de fabrication d'un alliage d'aluminium Active EP1972695B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200710012424 DE102007012424A1 (de) 2007-03-15 2007-03-15 Verfahren zur Herstellung einer Aluminium-Legierung

Publications (2)

Publication Number Publication Date
EP1972695A1 EP1972695A1 (fr) 2008-09-24
EP1972695B1 true EP1972695B1 (fr) 2010-08-18

Family

ID=39365620

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20080002908 Active EP1972695B1 (fr) 2007-03-15 2008-02-16 Procédé de fabrication d'un alliage d'aluminium

Country Status (2)

Country Link
EP (1) EP1972695B1 (fr)
DE (2) DE102007012424A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9038704B2 (en) 2011-04-04 2015-05-26 Emerson Climate Technologies, Inc. Aluminum alloy compositions and methods for die-casting thereof
CN102888541A (zh) * 2012-10-30 2013-01-23 季华 一种铝钛合金的制备方法
CN110541094A (zh) * 2019-09-30 2019-12-06 中信戴卡股份有限公司 一种压铸铝合金及车用部件
CN115927926B (zh) * 2022-11-30 2024-01-30 重庆剑涛铝业有限公司 一种高塑性车体结构铝合金及其制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1608245B2 (de) * 1967-09-21 1975-10-02 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zur Herstellung Strontium enthaltender Vorlegierungen
BR9007214A (pt) * 1989-03-07 1992-03-24 Aluminum Co Of America Processo de fundicao sob pressao em matriz,equipamento,e produto
US4937044A (en) * 1989-10-05 1990-06-26 Timminco Limited Strontium-magnesium-aluminum master alloy
CH689143A5 (de) * 1994-06-16 1998-10-30 Rheinfelden Aluminium Gmbh Aluminium-Silizium Druckgusslegierung mit hoher Korrosionsbestaendigkeit, insbesondere fuer Sicherheitsbauteile.
US20030143102A1 (en) * 2001-07-25 2003-07-31 Showa Denko K.K. Aluminum alloy excellent in cutting ability, aluminum alloy materials and manufacturing method thereof
US20050199318A1 (en) * 2003-06-24 2005-09-15 Doty Herbert W. Castable aluminum alloy

Also Published As

Publication number Publication date
EP1972695A1 (fr) 2008-09-24
DE102007012424A1 (de) 2008-09-18
DE502008001133D1 (de) 2010-09-30

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