EP0997550B1 - Méthode de fabrication d' un composant d' alliage d' aluminium par moulage sous pression - Google Patents

Méthode de fabrication d' un composant d' alliage d' aluminium par moulage sous pression Download PDF

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Publication number
EP0997550B1
EP0997550B1 EP99810313A EP99810313A EP0997550B1 EP 0997550 B1 EP0997550 B1 EP 0997550B1 EP 99810313 A EP99810313 A EP 99810313A EP 99810313 A EP99810313 A EP 99810313A EP 0997550 B1 EP0997550 B1 EP 0997550B1
Authority
EP
European Patent Office
Prior art keywords
weight
component
alloy
process according
temperature
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
EP99810313A
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German (de)
English (en)
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EP0997550A1 (fr
Inventor
Reinhard Winkler
Jürgen Wüst
Klaus Währisch
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.)
Magna BDW Technologies GmbH
Original Assignee
Alcan Technology and Management Ltd
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Publication date
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Application filed by Alcan Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Priority to EP99810313A priority Critical patent/EP0997550B1/fr
Priority to SI9930168T priority patent/SI0997550T1/xx
Publication of EP0997550A1 publication Critical patent/EP0997550A1/fr
Application granted granted Critical
Publication of EP0997550B1 publication Critical patent/EP0997550B1/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
    • C22C21/04—Modified aluminium-silicon alloys
    • 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 a method for producing a component with high Ductility requirements from an aluminum alloy by die casting. in the An application of the method as well as a Use of a component manufactured using the method.
  • the die-casting process enables the cost-effective production of large quantities Manufacture of thin-walled castings, such as those used in crash-relevant components Automotive engineering can be used.
  • Thin-walled parts place high demands of the castability.
  • Aluminum alloys that adhere to the flow behavior or mold filling requirements, are mainly alloys with a Si eutectic.
  • Suitable alloy based on aluminum-silicon is from EP-B-0687742 known.
  • the alloy corresponds to the type AlSi9Mg with considerable reduced iron content and strontium refinement of the AlSi eutectic.
  • the alloy becomes complete before heat treatment is carried out solution annealed and then quenched.
  • the invention is therefore based on the object of an aluminum alloy specify a heat treatment with which a high elongation at break sufficient yield strength even without high-temperature annealing can be achieved with subsequent water quenching.
  • the alloy essentially corresponds to the alloy known from EP-B-0687742 with an increased iron and reduced manganese content.
  • This variation in the alloy composition has a positive influence on the mechanical properties, since the Al 12 (Mg, Fe) Si 2 phases are significantly finer and more evenly distributed, which ultimately results in improved ductility. Due to the higher iron content, aluminum of lower purity can be used as an alloy base, which reduces the cost of the alloy. In addition, the higher iron content makes it possible to reduce the manganese additive used to reduce the tendency of the alloy to stick in the die.
  • the temperature range and duration of the solution annealing are thus chosen so that on the one hand the strong cast oversaturation of Silicon is broken down to improve the ductility and on the other hand the Yield strength through subsequent heat curing to the required Values can be set.
  • the temperature range for the partial solution treatment is preferably between about 420 and 460 ° C. Accepting a minor mechanical The component can lose strength for certain applications without subsequent Hot curing can be used.
  • the component can also be heat-cured after the partial solution annealing in the temperature range of the precipitation hardening of Mg 2 Si.
  • This heat curing is preferably carried out in a temperature range from approximately 190 to 240 ° C., in particular approximately 190 to 220 ° C.
  • the preferred field of application of the method according to the invention is in the production of large-area and thin-walled components with a high intake capacity for kinetic energy through plastic deformation, i.e. crash-relevant components such as safety components in vehicle construction and be used in particular in the automotive industry.
  • crash-relevant components such as safety components in vehicle construction and be used in particular in the automotive industry.
  • safety components are space frame nodes and crash elements.
  • alloy B is a comparative alloy and corresponds to an alloy according to EP-B-0687742.
  • alloy Composition (% by weight) Si Mn Fe mg Ti Sr A 10:45 00:45 00:24 00:28 00:05 0014 B 10.88 00:58 00:10 00:17 00:05 0013
  • Alloys A and B became the same, difficult to cast Component manufactured with a vacuum die casting process.
  • the component is a so-called "B-pillar" for vehicle construction, i.e. on large-area and thin-walled component with a wall thickness of 2 mm.
  • the component made from alloy A according to the invention was subjected to the following heat treatment after casting: Partial solution annealing 440 ° C / 60 min in air Cooling in still air warm aging 220 ° C / 110 min in air
  • the distortion was measured on a component made from alloy A according to the invention after various heat treatments.
  • the warpage was determined as follows: A reference point (zero point) was defined on the cast part in the cast state (ie before the heat treatment) at a certain point. After the heat treatment, the distance to the reference point was then measured. This distance defines the distortion as a measure of the deformation that arises due to the heat treatment carried out.
  • Table 2 Heat treatment / cooling Solution annealing 493 ° C / 60 min water quenching part. Solution annealing 440 ° C / 60 min cooling in still air part. Solution annealing 440 ° C / 60 min cooling with fan delay (Mm) 6.5 ⁇ 0.5 ⁇ 0.5
  • alloy A according to the invention The components made from alloy A according to the invention and comparative alloy B were heat-treated as follows after casting: Partial solution annealing Cooling in still air 420 ° C / 20 min
  • Table 3 clearly shows that compared to the comparative alloy B improved elongation at break values of alloy A according to the invention
  • This improved ductility of the alloy A according to the invention is attributed to the positive influence of the higher iron content and consequently the finer formation and more uniform distribution of the Al 12 (Mn, Fe) Si 2 phases in the alloy A according to the invention compared to the comparative alloy B.
  • the different formation and distribution of the brittle Al 12 (Mn, Fe) Si 2 phases could be confirmed metallographically using micrographs. Orientative tests have further shown that even when the iron content is increased to 0.35% by weight and the manganese content is simultaneously reduced to 0.4% by weight, no ⁇ -AIFeSi phases which are harmful to the ductility occur. Corrosion tests have also shown that pitting corrosion, which is observed at low iron contents due to the rough precipitation of the Al 12 (Mn, Fe) Si 2 phases, which act as cathodic local elements, is prevented by the increased iron content.

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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)
  • Body Structure For Vehicles (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Heat Treatment Of Articles (AREA)
  • Extrusion Of Metal (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Forging (AREA)
  • Powder Metallurgy (AREA)
  • Die Bonding (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Claims (6)

  1. Procédé de préparation d'un composant satisfaisant des exigences élevées en termes de ductilité, par moulage sous pression d'un alliage d'aluminium, caractérisé en ce qu'un alliage comportant :
    de 9,5 à 11,5 % en poids de silicium
    de 0,3 à 0,6 % en poids de manganèse
    de 0,15 à 0,35 % en poids de fer
    de 0,1 à 0,4 % en poids de magnésium
    au maximum 0,1 % en poids de titane
    de 90 à 180 ppm de strontium
    et facultativement encore:
    de 0,1 à 0,3 % en poids de chrome
    de 0,1 à 0,3 % en poids de nickel
    de 0,1 à 0,3 % en poids de cobalt
    le reste étant de l'aluminium avec les impuretés provoquées par la fabrication, à savoir individuellement au plus 0,05 % en poids et en tout au plus 0,2 % en poids, est moulé en un composant, le composant moulé subissant ensuite un recuit de solubilisation partielle dans une plage de températures de 400 à 490° C pendant une durée de 20 à 120 min. et étant ensuite refroidi à l'air.
  2. Procédé selon la revendication 1, caractérisé en ce que le recuit de solubilisation partielle est exécuté dans une plage de températures d'environ 420 à 460° C.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'après le recuit de solubilisation partielle, le composant est durci thermiquement dans la plage de températures du durcissement par précipitation de Mg2Si pour établir le niveau de résistance mécanique souhaité.
  4. Procédé selon la revendication 3, caractérisé en ce que le durcissement thermique est exécuté dans une plage de températures d'environ 190 à 240° C, en particulier d'environ 190 à 220° C.
  5. Utilisation du procédé selon l'une des revendications 1 à 4 pour la préparation de composants de grande surface et à parois minces présentant une haute capacité d'absorption d'énergie cinétique par déformation plastique.
  6. Utilisation d'un composant fabriqué selon l'une des revendications 1 à 4 comme composant de sécurité en construction de véhicules.
EP99810313A 1998-10-05 1999-04-15 Méthode de fabrication d' un composant d' alliage d' aluminium par moulage sous pression Expired - Lifetime EP0997550B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP99810313A EP0997550B1 (fr) 1998-10-05 1999-04-15 Méthode de fabrication d' un composant d' alliage d' aluminium par moulage sous pression
SI9930168T SI0997550T1 (en) 1998-10-05 1999-04-15 Method for fabricating a component from an aluminium alloy by pressure die-casting

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP98810995A EP0992601A1 (fr) 1998-10-05 1998-10-05 Méthode de fabrication d'un composant d'alliage d' aluminium par moulage sous pression
EP98810995 1998-10-05
EP99810313A EP0997550B1 (fr) 1998-10-05 1999-04-15 Méthode de fabrication d' un composant d' alliage d' aluminium par moulage sous pression

Publications (2)

Publication Number Publication Date
EP0997550A1 EP0997550A1 (fr) 2000-05-03
EP0997550B1 true EP0997550B1 (fr) 2002-10-09

Family

ID=8236368

Family Applications (2)

Application Number Title Priority Date Filing Date
EP98810995A Withdrawn EP0992601A1 (fr) 1998-10-05 1998-10-05 Méthode de fabrication d'un composant d'alliage d' aluminium par moulage sous pression
EP99810313A Expired - Lifetime EP0997550B1 (fr) 1998-10-05 1999-04-15 Méthode de fabrication d' un composant d' alliage d' aluminium par moulage sous pression

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP98810995A Withdrawn EP0992601A1 (fr) 1998-10-05 1998-10-05 Méthode de fabrication d'un composant d'alliage d' aluminium par moulage sous pression

Country Status (7)

Country Link
EP (2) EP0992601A1 (fr)
AT (1) ATE225868T1 (fr)
DE (1) DE59903009D1 (fr)
DK (1) DK0997550T3 (fr)
ES (1) ES2181382T3 (fr)
PT (1) PT997550E (fr)
SI (1) SI0997550T1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006032699A1 (de) * 2006-07-14 2008-01-17 Bdw Technologies Gmbh & Co. Kg Aluminiumlegierung und deren Verwendung für ein Gussbauteil insbesondere eines Kraftwagens
DE102008024524A1 (de) 2008-05-21 2009-11-26 Bdw Technologies Gmbh Verfahren und Anlage zur Herstellung eines Gussbauteils
DE102018214739A1 (de) * 2018-08-30 2020-03-05 Magna BDW technologies GmbH Hochfestes Gehäuse, sowie Verfahren zur Herstellung von hochfesten Guss-Gehäusen

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6921512B2 (en) * 2003-06-24 2005-07-26 General Motors Corporation Aluminum alloy for engine blocks
DK1612286T3 (da) * 2004-06-29 2011-10-24 Rheinfelden Aluminium Gmbh Aluminiumlegering til trykstøbning
JP2006183122A (ja) * 2004-12-28 2006-07-13 Denso Corp ダイカスト用アルミニウム合金およびアルミニウム合金鋳物の製造方法
DE102008055926B4 (de) 2007-11-08 2012-01-26 Ksm Castings Gmbh Vorderachsträger für Kraftfahrzeuge
DE102008029864B4 (de) * 2008-06-24 2011-02-24 Bdw Technologies Gmbh Gussbauteil und Verfahren zu dessen Herstellung
DE102009019269A1 (de) * 2009-04-28 2010-11-11 Audi Ag Aluminium-Silizium-Druckgusslegierung für dünnwändige Strukturbauteile
DE102010061895A1 (de) * 2010-07-21 2012-01-26 Bdw Technologies Gmbh Verfahren zum Wärmebehandeln eines Gussbauteils
EP2471967B1 (fr) * 2010-12-28 2014-07-09 Casa Maristas Azterlan Procédé pour obtenir des propriétés mécaniques améliorées dans des moulages d'aluminium recyclés dépourvus de phases bêta en forme de plaquettes
EP2735621B1 (fr) 2012-11-21 2015-08-12 Georg Fischer Druckguss GmbH & Co. KG Alliage à coulée sous pression en aluminium
GB2522716B (en) * 2014-02-04 2016-09-14 Jbm Int Ltd Method of manufacture
CN104962790B (zh) * 2015-08-01 2016-09-14 万信方达科技发展(北京)有限责任公司 一种物联网用信息采集装置
WO2017135463A1 (fr) * 2016-02-05 2017-08-10 学校法人芝浦工業大学 Alliage d'aluminium pour coulée, composant d'alliage d'aluminium et procédé de fabrication d'un composant d'alliage d'aluminium
CN112662920B (zh) * 2020-12-02 2022-03-15 成都慧腾创智信息科技有限公司 一种高导热高韧性压铸铝硅合金及其制备方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5938388A (ja) * 1982-08-26 1984-03-02 Okuno Seiyaku Kogyo Kk アルミニウム合金鋳物又はアルミニウム合金ダイカストの表面処理方法
JPH0791624B2 (ja) * 1988-05-11 1995-10-04 本田技研工業株式会社 アルミニウム合金鋳物品の製造方法
KR950000494A (ko) * 1993-06-22 1995-01-03 마이어트 그루츠 조향핸들과 그 제조공정
CH689143A5 (de) * 1994-06-16 1998-10-30 Rheinfelden Aluminium Gmbh Aluminium-Silizium Druckgusslegierung mit hoher Korrosionsbestaendigkeit, insbesondere fuer Sicherheitsbauteile.
JPH09272957A (ja) * 1996-04-08 1997-10-21 Nippon Light Metal Co Ltd 光沢性に優れたダイカスト鋳造アルミニウム製自動車用ホイールの製造方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006032699A1 (de) * 2006-07-14 2008-01-17 Bdw Technologies Gmbh & Co. Kg Aluminiumlegierung und deren Verwendung für ein Gussbauteil insbesondere eines Kraftwagens
DE102006032699B4 (de) * 2006-07-14 2010-09-09 Bdw Technologies Gmbh & Co. Kg Aluminiumlegierung und deren Verwendung für ein Gussbauteil insbesondere eines Kraftwagens
DE102008024524A1 (de) 2008-05-21 2009-11-26 Bdw Technologies Gmbh Verfahren und Anlage zur Herstellung eines Gussbauteils
EP2128276A1 (fr) 2008-05-21 2009-12-02 BDW technologies GmbH Connecteur de soupape pour tuyaux médicaux
DE102018214739A1 (de) * 2018-08-30 2020-03-05 Magna BDW technologies GmbH Hochfestes Gehäuse, sowie Verfahren zur Herstellung von hochfesten Guss-Gehäusen

Also Published As

Publication number Publication date
DK0997550T3 (da) 2003-02-10
EP0997550A1 (fr) 2000-05-03
DE59903009D1 (de) 2002-11-14
SI0997550T1 (en) 2003-04-30
ATE225868T1 (de) 2002-10-15
ES2181382T3 (es) 2003-02-16
EP0992601A1 (fr) 2000-04-12
PT997550E (pt) 2003-02-28

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