EP0933441A1 - Procédé pour la fabrication d'un pièce coulée sous pression en alliage d'aluminium - Google Patents

Procédé pour la fabrication d'un pièce coulée sous pression en alliage d'aluminium Download PDF

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Publication number
EP0933441A1
EP0933441A1 EP98810062A EP98810062A EP0933441A1 EP 0933441 A1 EP0933441 A1 EP 0933441A1 EP 98810062 A EP98810062 A EP 98810062A EP 98810062 A EP98810062 A EP 98810062A EP 0933441 A1 EP0933441 A1 EP 0933441A1
Authority
EP
European Patent Office
Prior art keywords
component
aluminum alloy
annealing
temperature range
heterogenization
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.)
Granted
Application number
EP98810062A
Other languages
German (de)
English (en)
Other versions
EP0933441B1 (fr
Inventor
Reinhard Winkler
Günther Höllrigl
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
Priority to SI9830301T priority Critical patent/SI0933441T1/xx
Application filed by Alusuisse Lonza Services Ltd, Alusuisse Technology and Management Ltd filed Critical Alusuisse Lonza Services Ltd
Priority to PT98810062T priority patent/PT933441E/pt
Priority to DE59805967T priority patent/DE59805967D1/de
Priority to AT98810062T priority patent/ATE226263T1/de
Priority to ES98810062T priority patent/ES2181152T3/es
Priority to EP98810062A priority patent/EP0933441B1/fr
Priority to DK98810062T priority patent/DK0933441T3/da
Priority to BR9900621-9A priority patent/BR9900621A/pt
Publication of EP0933441A1 publication Critical patent/EP0933441A1/fr
Application granted granted Critical
Publication of EP0933441B1 publication Critical patent/EP0933441B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • C22F1/05—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 of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions

Definitions

  • the invention relates to a method for producing a component from an aluminum alloy hardenable by precipitation of Mg 2 Si with Si and / or Mg 2 Si eutectic by die casting.
  • An application of the method and the use of a component produced by the method also lie within the scope of the invention.
  • Crash behavior is an increasingly important aspect in vehicle construction. This applies to road traffic as well as for rail traffic.
  • the die casting process enables high-volume, inexpensive production of thin-walled castings, such as those used as crash-relevant components in automotive engineering.
  • Thin-walled parts place high demands on the castability.
  • Aluminum alloys that can meet the requirements placed on the flow behavior or mold filling capacity are alloys with a Si and / or Mg 2 Si eutectic.
  • the object of the invention is therefore to find a heat treatment with which can achieve a high elongation at break with a sufficient yield strength.
  • the component after die casting to increase the ductility to the desired level in a temperature range from 320 to 410 ° C for a period of 320 to 10 min of heterogenization annealing is subjected.
  • the preferred temperature range for heterogenization annealing lies between 350 and 380 ° C.
  • the heterogenization annealing according to the invention is also an annealing in which the Supersaturation of the rapid solidification is reduced.
  • This Si is therefore an annealing in a temperature range between about 350 and 380 ° C particularly advantageous.
  • This heterogenization annealing ensures that the Al matrix becomes completely ductile. The crash behavior of the component is improved, because there are larger deformation paths during the ductile fracture.
  • An essential aspect of the heat treatment method according to the invention lies in that to a high temperature anneal followed by water quenching dispensed with and the component can be manufactured without warpage.
  • the component is cured before the heterogenization annealing to set the desired strength level, preferably in the temperature range of the precipitation hardening of Mg 2 Si in the falling part of the hardness curve. This pre-hardening brings a higher level of strength than in the cast state and thus creates a defined initial state.
  • the temperatures and times used for this pre-hardening are in the over-hardening range and aim to produce a pre-segregation of Mg 2 Si precipitates which is as homogeneous as possible. It is thus achieved that the heterogenization annealing can take place with short diffusion paths, ie with shorter times, and consequently a structure which is very homogeneous with respect to the coarsened Mg 2 Si particles.
  • Pre-curing in a temperature range of approximately 190 to 210 ° C. is preferred carried out.
  • Rapid solidification of thin-walled castings leads to high Si supersaturation, which can be greater than the equilibrium solubility (> 1.60% Si).
  • the heat treatment usually carried out according to the prior art at 490 to 530 ° C. with subsequent quenching treatment in water reduces the Si supersaturation to 0.7 to 0.8% Si, while at the same time creating the prerequisite for hardening the workpiece by precipitation hardening of Mg 2 Si to bring higher strength.
  • the increase in ductility usually determined as an A5 elongation at break by tensile testing, can be explained by reducing the Si supersaturation and by simultaneously rounding (shaping) the Si or Mg 2 Si eutectic.
  • the essential essence of the present invention lies in the over-hardening of the Al matrix to be controlled so that the desired yield point is reached. At the same time the diffusion of the Si, which takes place at a higher temperature, rapidly degrades the high Enable casting supersaturation of Si.
  • the coarsening of the hardening phase Mg 2 Si is specifically controlled by placing the aforementioned pre-hardening in the temperature range of the precipitation hardening of Mg 2 Si in the falling part of the hardness curve of the heterogenization annealing, an optimal ratio of yield strength and elongation at break can be achieved.
  • the demixing reaction of the Mg 2 Si is controlled in a controlled manner by coarsening the Mg 2 Si particles already present.
  • An aluminum alloy used with preference contains essential alloy elements 2.0 to 11.0% by weight of Si and 0.10 to 5.5% by weight of Mg.
  • the aluminum alloy can optionally be used still contain 0.1 to 0.5 wt .-% Fe and 0.1 to 1.2 wt .-% Mn.
  • the aluminum alloy can add further elements individually max. 0.05 wt%, total Max. 0.2% by weight, as well as aluminum as the remainder along with production-related impurities contain.
  • the heterogenization annealing expediently takes place continuously in one Continuous furnace, preferably in the passage through a heating zone with controllable heat transfer.
  • the preferred field of application of the method according to the invention is in production thin-walled components with high absorption capacity for kinetic energy through plastic deformation, i.e. crash-relevant components, such as those used as safety parts in the Vehicle construction and in particular used in the automotive industry.
  • Fig. 1 shows schematically the conditions for the pre-hardening in the temperature range of the precipitation hardening of Mg 2 Si in the falling part of the hardening curve for three different annealing temperatures.
  • alloy Composition (% by weight) Si Fe Mn Mg Ti 1 2.5 0.1 0.68 5.4 0.14 2nd 10.4 0.1 0.57 0.11 0.04

Landscapes

  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Extrusion Of Metal (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Continuous Casting (AREA)
  • Heat Treatment Of Articles (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Forging (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
EP98810062A 1998-01-29 1998-01-29 Procédé pour la fabrication d'un pièce coulée sous pression en alliage d'aluminium Expired - Lifetime EP0933441B1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
PT98810062T PT933441E (pt) 1998-01-29 1998-01-29 Processo para a fabricacao de um componente de uma liga de aluminio por moldacao por moldacao por injeccao sob pressao
DE59805967T DE59805967D1 (de) 1998-01-29 1998-01-29 Verfahren zur Herstellung eines Bauteiles aus einer Aluminiumlegierung durch Druckgiessen
AT98810062T ATE226263T1 (de) 1998-01-29 1998-01-29 Verfahren zur herstellung eines bauteiles aus einer aluminiumlegierung durch druckgiessen
ES98810062T ES2181152T3 (es) 1998-01-29 1998-01-29 Procedimiento para fabricar una pieza de montaje a partir de una aleacion de aluminio mediante colada a presion.
SI9830301T SI0933441T1 (en) 1998-01-29 1998-01-29 Process for producing an aluminium alloy pressure die cast component
DK98810062T DK0933441T3 (da) 1998-01-29 1998-01-29 Fremgangsmåde til fremstilling af en konstruktionsdel af en aluminiumslegering ved trykstøbning
EP98810062A EP0933441B1 (fr) 1998-01-29 1998-01-29 Procédé pour la fabrication d'un pièce coulée sous pression en alliage d'aluminium
BR9900621-9A BR9900621A (pt) 1998-01-29 1999-01-28 Processo para produção de um componente de uma liga de alumínio por fundição injetada

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810062A EP0933441B1 (fr) 1998-01-29 1998-01-29 Procédé pour la fabrication d'un pièce coulée sous pression en alliage d'aluminium

Publications (2)

Publication Number Publication Date
EP0933441A1 true EP0933441A1 (fr) 1999-08-04
EP0933441B1 EP0933441B1 (fr) 2002-10-16

Family

ID=8235907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810062A Expired - Lifetime EP0933441B1 (fr) 1998-01-29 1998-01-29 Procédé pour la fabrication d'un pièce coulée sous pression en alliage d'aluminium

Country Status (8)

Country Link
EP (1) EP0933441B1 (fr)
AT (1) ATE226263T1 (fr)
BR (1) BR9900621A (fr)
DE (1) DE59805967D1 (fr)
DK (1) DK0933441T3 (fr)
ES (1) ES2181152T3 (fr)
PT (1) PT933441E (fr)
SI (1) SI0933441T1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19916037C1 (de) * 1999-04-09 2000-09-14 Daimler Chrysler Ag Verfahren zur Herstellung von leistungsführenden Getriebeteilen
DE102008056511A1 (de) * 2008-11-08 2010-05-20 Audi Ag Verfahren zur Herstellung dünnwandiger Metallbauteile aus einer AI-SiMg-Legierung, insbesondere von Bauteilen eines Kraftfahrzeugs
GB2522716A (en) * 2014-02-04 2015-08-05 Jbm Internat Ltd Method of manufacture
CN110387489A (zh) * 2018-04-16 2019-10-29 现代自动车株式会社 用于压铸的铝合金及使用其制造铝合金铸件的方法
CN112981190A (zh) * 2019-12-16 2021-06-18 现代自动车株式会社 用于模铸的铝合金和使用该用于模铸的铝合金制造铸造铝合金的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB390244A (en) * 1931-11-14 1933-04-06 Horace Campbell Hall Improvements in the heat treatment of aluminium alloys
FR2323771A1 (fr) * 1975-09-12 1977-04-08 Snecma Perfectionnements aux pieces moulees en alliage hypoeutectique aluminium-silicium au magnesium et aux traitements thermiques desdites pieces
US4419143A (en) * 1981-11-16 1983-12-06 Nippon Light Metal Company Limited Method for manufacture of aluminum alloy casting
EP0743372A1 (fr) * 1995-05-19 1996-11-20 Tenedora Nemak, S.A. de C.V. Procédé et appareil pour l'obtention facilitée d'un alliage d'aluminium durcissable par traitement thermique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB613413A (en) * 1942-03-21 1948-11-29 Clay Patrick Bedford Improvements in or relating to methods of shipbuilding

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB390244A (en) * 1931-11-14 1933-04-06 Horace Campbell Hall Improvements in the heat treatment of aluminium alloys
FR2323771A1 (fr) * 1975-09-12 1977-04-08 Snecma Perfectionnements aux pieces moulees en alliage hypoeutectique aluminium-silicium au magnesium et aux traitements thermiques desdites pieces
US4419143A (en) * 1981-11-16 1983-12-06 Nippon Light Metal Company Limited Method for manufacture of aluminum alloy casting
EP0743372A1 (fr) * 1995-05-19 1996-11-20 Tenedora Nemak, S.A. de C.V. Procédé et appareil pour l'obtention facilitée d'un alliage d'aluminium durcissable par traitement thermique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SCHNEIDER W ET AL: "WAERMEBEHANDLUNG VON ALUMINIUM-GUSSLEGIERUNGEN FUER DAS VAKUUM- DRUCKGIESSEN", GIESSEREI, vol. 83, no. 1, 8 January 1996 (1996-01-08), pages 20 - 24, XP000581599 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19916037C1 (de) * 1999-04-09 2000-09-14 Daimler Chrysler Ag Verfahren zur Herstellung von leistungsführenden Getriebeteilen
DE102008056511A1 (de) * 2008-11-08 2010-05-20 Audi Ag Verfahren zur Herstellung dünnwandiger Metallbauteile aus einer AI-SiMg-Legierung, insbesondere von Bauteilen eines Kraftfahrzeugs
DE102008056511B4 (de) * 2008-11-08 2011-01-20 Audi Ag Verfahren zur Herstellung dünnwandiger Metallbauteile aus einer AI-SiMg-Legierung, insbesondere von Bauteilen eines Kraftfahrzeugs
GB2522716A (en) * 2014-02-04 2015-08-05 Jbm Internat Ltd Method of manufacture
GB2522716B (en) * 2014-02-04 2016-09-14 Jbm Int Ltd Method of manufacture
CN110387489A (zh) * 2018-04-16 2019-10-29 现代自动车株式会社 用于压铸的铝合金及使用其制造铝合金铸件的方法
US11807918B2 (en) 2018-04-16 2023-11-07 Hyundai Motor Company Aluminum alloy for die casting and method for manufacturing aluminum alloy casting using the same
CN112981190A (zh) * 2019-12-16 2021-06-18 现代自动车株式会社 用于模铸的铝合金和使用该用于模铸的铝合金制造铸造铝合金的方法

Also Published As

Publication number Publication date
ES2181152T3 (es) 2003-02-16
EP0933441B1 (fr) 2002-10-16
PT933441E (pt) 2003-02-28
ATE226263T1 (de) 2002-11-15
DE59805967D1 (de) 2002-11-21
DK0933441T3 (da) 2003-02-17
BR9900621A (pt) 1999-12-14
SI0933441T1 (en) 2003-04-30

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