EP1757709B1 - Alliage d'aliminium résistant à la chaleur - Google Patents

Alliage d'aliminium résistant à la chaleur Download PDF

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Publication number
EP1757709B1
EP1757709B1 EP06405085A EP06405085A EP1757709B1 EP 1757709 B1 EP1757709 B1 EP 1757709B1 EP 06405085 A EP06405085 A EP 06405085A EP 06405085 A EP06405085 A EP 06405085A EP 1757709 B1 EP1757709 B1 EP 1757709B1
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max
aluminium alloy
alloy according
alloy
polygon
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German (de)
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EP1757709A1 (fr
Inventor
Rüdiger Franke
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Aluminium Rheinfelden GmbH
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Aluminium Rheinfelden GmbH
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    • 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
    • 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
    • C22F1/05—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 an aluminum alloy of the type AIMgSi with good durability for the production of thermally and mechanically stressed cast components.
  • the alloy contains, in addition to conventional additives, 0.6 to 4.5% by weight of Si, 2.5 to 11% by weight of Mg, of which 1 to 4.5% by weight of free Mg, and 0.6 to 1.8% by weight of Mn.
  • the WO-A-9615281 discloses an aluminum alloy having 3.0 to 6.0 wt% Mg, 1.4 to 3.5 wt% Si, 0.5 to 2.0 wt% Mn, max. 0.15 wt.% Fe, max. 0.2 wt .-% of Ti and aluminum as a remainder with further impurities individually max. 0.02 wt .-%, a total of max. 0.2% by weight.
  • the alloy is suitable for the production of components with high demands on the mechanical properties.
  • the alloy is preferably processed by die casting, thixocasting or thixoforging.
  • a similar aluminum alloy is known for the manufacture of safety components in the die casting, squeeze casting, thixoforming or thixoforging process.
  • the alloy contains 2.5 to 7.0 wt.% Mg, 1.0 to 3.0 wt.% Si, 0.3 to 0.49 wt.% Mn, 0.1 to 0.3 wt .-% Cr, max. 0.15% by weight of Ti, max. 0.15% by weight of Ti, max. 0.15 wt.% Fe, max. 0.00005 wt.% Ca, max. 0.00005 wt.% Na, max. 0.0002 wt.% P, other impurities individually max. 0.02 wt .-% and aluminum as the remainder.
  • One from the EP-A-1 234 893 known casting alloy of the type AlMgSi contains 3.0 to 7.0 wt .-% Mg, 1.7 to 3.0 wt .-% Si, 0.2 to 0.48 wt .-% Mn, 0.15 to 0 , 35 wt.% Fe, max. 0.2 wt .-% Ti, optionally 0.1 to 0.4 wt .-% Ni and aluminum as balance and production-related impurities individually max. 0.02 wt .-%, a total of max.
  • magnesium and silicon in the alloy substantially in a weight ratio Mg: Si of 1.7: 1 corresponding to the composition of the quasi-binary eutectic with the solid phases Al and Mg 2 Si present.
  • the alloy is suitable for the production of safety parts in vehicle construction by die casting, rheo- and thixocasting.
  • the invention has for its object to provide an aluminum alloy with good Treasurewarmfesttechnik for the production of thermally and mechanically stressed components.
  • the alloy should be suitable above all for die casting, but also for gravity die casting, low pressure die casting and sand casting.
  • the components cast from the alloy should have a high strength combined with high ductility.
  • the mechanical properties sought in the component are defined as follows: yield strength Rp0.2> 170 MPa tensile strenght Rm> 230 MPa elongation A5> 6%
  • the castability of the alloy should be comparable to the castability of currently used AlSiCu casting alloys, and the alloy should show no tendency to crack.
  • the contents of the alloying elements magnesium and silicon in% by weight in a Cartesian coordinate system are represented by a polygon A with the coordinates [Mg; Si] [8.5; 2.7] [8.5; 4,7] [6,3; 2,7] [6,3; 3,4] are limited and the alloy continues 0.1 to 1 wt .-% manganese Max. 1 wt .-% iron Max. 3% by weight of copper Max. 2 wt .-% nickel Max. 0.5% by weight of chromium Max. 0.6% by weight of cobalt Max. 0.2% by weight of zinc Max. 0.2% by weight of titanium Max. 0.5% by weight zirconium Max. 0.008% by weight of beryllium Max. 0.5% by weight of vanadium and aluminum as a remainder with further elements and production-related impurities individually max. 0.05% by weight, in total max. Contains 0.2 wt .-%.
  • the following content ranges prefers: mg 6.9 to 7.9 wt .-%, in particular 7.1 to 7.7 wt .-% Si 3.0 to 3.7% by weight, in particular 3.1 to 3.6% by weight
  • alloys whose contents of the alloying elements magnesium and silicon in% by weight in a Cartesian coordinate system are represented by a polygon B with the coordinates [Mg; Si] [7,9; 3.0] [7.9; 3.7] [6.9; 3.0] [6.9; 3,7], in particular by a polygon C with the coordinates [Mg; Si] [7,7; 3,1] [7,7; 3,6] [7,1; 3,1] [7,1; 3.6] are limited.
  • the alloying elements Mn and Fe With the alloying elements Mn and Fe, the gluing of the castings in the mold can be prevented. High iron content leads to increased heat resistance at the expense of reduced elongation. Mn also contributes significantly to the heat curing. Depending on the field of application, therefore, the alloying elements Fe and Mn are preferably matched as follows:
  • a content of 0.4 to 1 wt .-% Fe, in particular 0.5 to 0.7 wt .-% Fe a content of 0.1 to 0.5 wt .-% Mn, in particular 0.3 adjusted to 0.5 wt .-% Mn.
  • a content of max. 0.2 wt .-% Fe, in particular max. 0.15 wt .-% Fe a content of 0.5 to 1 wt .-% Mn, in particular 0.5 to 0.8 wt .-% Mn is set.
  • the following content ranges are preferred: Cu 0.2 to 1.2 wt .-%, preferably 0.3 to 0.8 wt .-%, in particular 0.4 to 0.6 wt .-% Ni 0.8 to 1.2% by weight Cr max 0.2 wt.%, preferably max. 0.05% by weight Co 0.3 to 0.6% by weight Ti 0.05 to 0.15% by weight Fe Max. 0.15% by weight Zr 0.1 to 0.4% by weight
  • the shaping behavior of the alloy can be further improved.
  • Titanium and zirconium are used for grain refining. Good grain refining contributes significantly to the improvement of casting properties and mechanical properties.
  • Beryllium in combination with vanadium reduces dandruff.
  • 0.02 to 0.15 wt .-% V preferably 0.02 to 0.08 wt .-% V, in particular 0.02 to 0.05 wt .-% V less than 60 ppm Be are sufficient.
  • a preferred field of application of the aluminum alloy according to the invention is the production of thermally and mechanically stressed components as pressure, mold or sand casting, in particular for cylinder crankcases produced in the die casting process in the automotive industry.
  • the alloy according to the invention fulfills the mechanical properties required for structural components in vehicle construction after a one-stage heat treatment without separate solution annealing.
  • the polygon A shown in FIG. 1 defines the content range for the alloying elements Mg and Si, the polygons B and C relate to preferred ranges.
  • the straight line E corresponds to the composition of the quasi-binary eutectic Al-Mg 2 Si. The novel alloy compositions are thus on the side with a magnesium excess.
  • the alloy according to the invention was cast to give pressure casting plates with different wall thicknesses. Tensile samples were produced from the die cast plates. On the tensile specimens the mechanical properties yield strength (Rp0.2), tensile strength (Rm) and elongation at break (A) in the state F cast state Water / F Cast condition, quenched in water after molding F> 24 h Cast condition,> 24 h storage at room temperature Water / F> 24 Cast condition, quenched in water after molding,> 24 h storage at room temperature and after various single-stage heat treatments at temperatures ranging from 250 ° C to 380 ° C and after long-term storage at temperatures ranging from 150 ° C to 250 ° C.
  • Rp0.2 mechanical properties yield strength
  • Rm tensile strength
  • A elongation at break
  • the investigated alloys are summarized in Table 1.
  • the reference number A refers to alloys with added copper
  • the reference number B to alloys without added copper.
  • Table 2 summarizes the results of the mechanical properties found on tensile specimens of the alloys of Table 1.
  • An alloy with good continuous heat resistance not considered in Tables 1 and 2 had the following composition (in% by weight): 3.4 Si, 0.6 Fe, 0.42 Cu, 0.32 Mn, 7.4 Mg, o, 07 Ti, 0.9 Ni, 0.024 V and 0.004 Be
  • Table 1 chemical composition of the alloys in wt .-% alloy variant Wall thickness flat sample Si Fe Cu Mn mg Ti V Be 1 3 mm 3,469 .1138 0.787 7,396 0.106 0.0221 0.0025 1A 3mm 3.4 0,117 0.527 0.781 7.151 0,119 0.0223 0.0019 2 2 mm 3.366 0.0936 0.774 7,246 0,117 0.0263 0.0024 2A 2mm 3,251 0.0841 0.507 0.76 7,499 0.1 0.0246 0.0023 3 4 mm 3,352 0.0917 0.774 7,221 0.118 0.026 0.0024 3A 4 mm 3,198 0.0848 0.522 0.747 7,351 0,101 0.0255 0.0023 4 6 mm 3.28 .0921 0.766 7,024 0,119 0.0268 0.0024 4A 6 mm 3,181 0.0862 0.535 0.745 7,273 0.1 0.0257 0.0023 alloy variant initial state heat treatment Rp0.2 [MPa] Rm [MPa] A5

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Continuous Casting (AREA)
  • Mold Materials And Core Materials (AREA)
  • Body Structure For Vehicles (AREA)
  • Cookers (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Secondary Cells (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Claims (17)

  1. Alliage d'aluminium du type AIMgSi présentant une bonne endurance à chaud pour la fabrication de pièces coulées sollicitées thermiquement et mécaniquement, caractérisé en ce que les teneurs en éléments d'alliage magnésium et silicium en % en poids, sont limitées dans un système de coordonnées cartésien par un polygone A ayant les coordonnées [Mg;Si] [8,5;2,7] [8,5;4,7] [6,3;2,7] [6,3;3,4] et l'alliage contient en outre
    0,1 à 1 % en poids de manganèse
    max. 1 % en poids de fer
    max. 3 % en poids de cuivre
    max. 2 % en poids de nickel
    max. 0,5 % en poids de chrome
    max. 0,6 % en poids de cobalt
    max. 0,2 % en poids de zinc
    max. 0,2 % en poids de titane
    max. 0,5 % en poids de zirconium
    max. 0,008 % en poids de béryllium
    max. 0,5 % en poids de vanadium
    le reste étant de l'aluminium avec d'autres éléments et des impuretés dues à la fabrication en une teneur individuelle de max. 0,05 % en poids et au total de max. 0,2 % en poids.
  2. Alliage d'aluminium selon la revendication 1, caractérisé par 6,9 à 7,9 % en poids de Mg, de préférence 7,1 à 7,7 % en poids de Mg.
  3. Alliage d'aluminium selon la revendication 1 ou 2, caractérisé par 3,0 à 3,7 % en poids de Si, de préférence 3,1 à 3,6 %£ en poids de Si.
  4. Alliage d'aluminium selon la revendication 1, caractérisé en ce que les teneurs en éléments d'alliage magnésium et silicium en % en poids, sont limitées dans un système de coordonnées cartésien par un polygone B ayant les coordonnées [Mg;Si] [7,9;3,0] [7,9;3,7] [6,9;3,0] [6,9:3,7].
  5. Alliage d'aluminium selon la revendication 4, caractérisé en ce que les teneurs en éléments d'alliage magnésium et silicium en % en poids, sont limitées dans un système de coordonnées cartésien par un polygone C ayant les coordonnées [Mg;Si] [7,7;3,1] [7,7;3,6] [7,1;3,1] [7,1;3,6] .
  6. Alliage d'aluminium selon l'une quelconque des revendications 1 à 5, caractérisé par 0,4 à 1 % en poids de Fe, de préférence 0,5 à 0,7 % en poids de Fe, et 0,1 à 0,5 % en poids de Mn, de préférence 0, 3 à 0,5 % en poids de Mn.
  7. Alliage d'aluminium selon l'une quelconque des revendications 1 à 5, caractérisé par max. 0,20 % en poids de Fe, de préférence max. 0,15 % en poids de Fe, et 0,5 à 1 % en poids de Mn, de préférence 0,5 à 0,8 % en poids de Mn.
  8. Alliage d'aluminium selon l'une quelconque des revendications 1 à 7, caractérisé par 0,2 à 1,2 % en poids de Cu, de préférence 0,3 à 0,8 % en poids de Cu, en particulier 0,4 à 0,6 % en poids de Cu.
  9. Alliage d'aluminium selon l'une quelconque des revendications 1 à 8, caractérisé par 0,8 à 1,2 % en poids de Ni.
  10. Alliage d'aluminium selon l'une quelconque des revendications 1 à 9, caractérisé par max. 0,2 % en poids de Cr, de préférence 0,05 % en poids de Cr.
  11. Alliage d'aluminium selon l'une quelconque des revendications 1 à 10, caractérisé par 0,3 à 0,6 % en poids de Co.
  12. Alliage d'aluminium selon l'une quelconque des revendications 1 à 11, caractérisé par 0,05 à 0,15 % en poids de Ti.
  13. Alliage d'aluminium selon l'une quelconque des revendications 1 à 12, caractérisé par 0,1 à 0,4 % en poids de Zr.
  14. Alliage d'aluminium selon l'une quelconque des revendications 1 à 13, caractérisé par 0,02 à 0,15 % en poids de V, de préférence 0,02 à 0,08 % en poids de V, en particulier 0,02 à 0,05 % en poids de V, et moins de 60 ppm de Be.
  15. Utilisation d'un alliage d'aluminium selon l'une quelconque des revendications 1 à 14, pour des pièces sollicitées thermiquement et mécaniquement, fabriquées par un procédé de coulée sous pression, en coquille ou en sable.
  16. Utilisation selon la revendication 15 pour des carters de vilebrequin fabriqués par un procédé de coulée sous pression, dans la construction automobile.
  17. Utilisation d'un alliage d'aluminium selon l'une quelconque des revendications 1 à 14 pour des pièces de sécurité fabriquées par un procédé de coulée sous pression, dans la construction automobile.
EP06405085A 2005-08-22 2006-02-28 Alliage d'aliminium résistant à la chaleur Active EP1757709B1 (fr)

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US (1) US20100074796A1 (fr)
EP (1) EP1757709B1 (fr)
JP (1) JP5007086B2 (fr)
KR (1) KR101409586B1 (fr)
CN (1) CN100999797B (fr)
AT (1) ATE376075T1 (fr)
BR (1) BRPI0603394B1 (fr)
CA (1) CA2556645C (fr)
DE (1) DE502006000145D1 (fr)
MX (1) MXPA06009523A (fr)
NO (1) NO343257B1 (fr)

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EP3670689A1 (fr) 2018-12-20 2020-06-24 Rheinfelden Alloys GmbH & Co. KG Alliage d'aluminium résistant à la chaleur

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GB201415420D0 (en) * 2014-09-01 2014-10-15 Univ Brunel A casting al-mg-zn-si based aluminium alloy for improved mechanical performance
KR101620204B1 (ko) * 2014-10-15 2016-05-13 현대자동차주식회사 다이캐스팅 부품용 합금 및 그 제조방법
KR101606525B1 (ko) * 2014-10-29 2016-03-25 주식회사 케이엠더블유 내식성이 개선된 다이캐스팅용 알루미늄 합금
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EP3159422B1 (fr) * 2016-04-19 2018-06-13 Rheinfelden Alloys GmbH & Co. KG Alliage d'aluminium pour moulage sous pression
EP3235916B1 (fr) 2016-04-19 2018-08-15 Rheinfelden Alloys GmbH & Co. KG Alliage de moulage
CN107022704A (zh) * 2017-04-11 2017-08-08 浙江洋铭工贸有限公司 一种用于压铸铝采暖散热器的高强度合金
CN107557624B (zh) * 2017-08-29 2019-03-26 河南明泰科技发展有限公司 一种铝合金集装箱用铝板及其生产方法
CN107739923A (zh) * 2017-11-08 2018-02-27 宁波市海曙兴达铝业有限公司 Al‑Mg‑Si铝合金及其制备方法
CN108034861B (zh) * 2017-11-27 2020-02-21 宁波华源精特金属制品有限公司 一种机器人盖板及其制备工艺
CN108330350A (zh) * 2018-01-26 2018-07-27 安徽省鸣新材料科技有限公司 一种具有强磁场屏蔽性能的泡沫铝材料及其制备方法
CN108754256B (zh) * 2018-07-16 2019-12-06 上海交通大学 非热处理强化高强高韧压铸铝镁硅合金及其制备方法
DE102019214740B3 (de) * 2019-09-26 2021-02-04 Daimler Ag Verfahren zur Herstellung eines Bauteils aus einer Aluminiumlegierung
CN112575226A (zh) * 2019-09-27 2021-03-30 丹阳盛龙电热化工有限公司 一种耐磨耐高温镍铬合金及其制备方法
CN111607725A (zh) * 2020-07-17 2020-09-01 山西瑞格金属新材料有限公司 一种高韧性耐腐蚀铝合金及其热处理方式
CN112626391B (zh) * 2021-01-07 2022-05-03 重庆慧鼎华创信息科技有限公司 一种低硅高导热压铸铝合金及其制备方法
CN113293328B (zh) * 2021-05-26 2023-09-19 重庆慧鼎华创信息科技有限公司 一种Al-Mg高强韧压铸铝合金及其制备方法
CN116005050B (zh) * 2023-03-24 2023-06-20 中信戴卡股份有限公司 铝镁硅合金及其制备方法

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DE102011014590A1 (de) 2011-01-27 2012-08-02 Volkswagen Aktiengesellschaft Verfahren zur Herstellung einer Aluminiumlegierung, eine Aluminiumlegierung sowie Verfahren zur Herstellung eines Aluminiumgussbauteils und ein Aluminiumgussbauteil
EP3670689A1 (fr) 2018-12-20 2020-06-24 Rheinfelden Alloys GmbH & Co. KG Alliage d'aluminium résistant à la chaleur
WO2020126198A1 (fr) 2018-12-20 2020-06-25 Rheinfelden Alloys Gmbh & Co. Kg Alliage aluminium thermorésistant
EP3670689B1 (fr) * 2018-12-20 2023-10-18 Aluminium Rheinfelden Alloys GmbH Alliage d'aluminium résistant à la chaleur

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MXPA06009523A (es) 2007-03-01
ATE376075T1 (de) 2007-11-15
BRPI0603394B1 (pt) 2014-07-29
EP1757709A1 (fr) 2007-02-28
KR101409586B1 (ko) 2014-06-20
CA2556645C (fr) 2014-01-14
DE502006000145D1 (de) 2007-11-29
KR20070022610A (ko) 2007-02-27
JP2007084922A (ja) 2007-04-05
NO343257B1 (no) 2019-01-02
CN100999797A (zh) 2007-07-18
NO20063736L (no) 2007-02-23
CA2556645A1 (fr) 2007-02-22
BRPI0603394A (pt) 2007-04-27
JP5007086B2 (ja) 2012-08-22
US20100074796A1 (en) 2010-03-25
CN100999797B (zh) 2011-01-26

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