US20100074796A1 - High temperature aluminium alloy - Google Patents

High temperature aluminium alloy Download PDF

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Publication number
US20100074796A1
US20100074796A1 US11/506,765 US50676506A US2010074796A1 US 20100074796 A1 US20100074796 A1 US 20100074796A1 US 50676506 A US50676506 A US 50676506A US 2010074796 A1 US2010074796 A1 US 2010074796A1
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United States
Prior art keywords
max
aluminium alloy
alloy according
alloy
aluminium
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Abandoned
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US11/506,765
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Rudiger Franke
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Aluminium Rheinfelden GmbH
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Aluminium Rheinfelden GmbH
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Assigned to ALUMINIUM RHEINFELDEN GMBH reassignment ALUMINIUM RHEINFELDEN GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FRANKE, RUDIGER
Publication of US20100074796A1 publication Critical patent/US20100074796A1/en
Abandoned 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
    • 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 aluminium alloy of type AlMgSi with good creep strength at elevated temperatures for the production of castings subject to high thermal and mechanical stresses.
  • AlSi alloys are generally used today for components subject to high thermal stresses, this high-temperature strength being achieved by the addition of Cu to the alloy. Copper does, however, also increase the hot shortness and has a negative effect on the castability.
  • Applications in which in particular high-temperature strength is demanded are primarily found in the area of the cylinder heads of automotive engines, see e.g. F. J. Feikus, “Optimierung von Aluminium-Silicium-Gusslegtechniken für Zylinderkexcellent” [Optimization of Aluminium-Silicon Casting Alloys for Cylinder Heads], Giesserei-Praxis, 1999, Volume 2, pp. 50-57.
  • a high-temperature AlMgSi alloy for the production of cylinder heads is known from U.S. Pat. No. 3,868,250.
  • the alloy contains, apart from the normal additives, 0.6 to 4.5% w/w Si, 2.5 to 11% w/w Mg, of which 1 to 4.5% w/w free Mg, and 0.6 to 1.8% w/w Mn.
  • WO-A-96 15281 describes an aluminium alloy with 3.0 to 6.0% w/w Mg, 1.4 to 3.5% w/w Si, 0.5 to 2.0% w/w Mn, max. 0.15% w/w Fe, max. 0.2% w/w Ti and aluminium as remainder with further impurities of individually max. 0.02% w/w, and max. 0.2% w/w in total.
  • the alloy is suitable for the production of components where high demands are made on the mechanical properties. Processing of the alloy is preferably by pressure die casting, thixocasting or thixoforging.
  • a similar aluminium alloy for the production of safety components by pressure die casting, squeeze casting, thixoforming or thixoforging is known from WO-A-0043560.
  • the alloy contains 2.5-7.0% w/w Mg, 1.0-3.0% w/w Si, 0.3-0.49% w/w Mn, 0.1-0.3% w/w Cr, max. 0.15% w/w Ti, max. 0.15% w/w Ti, max. 0.15% w/w Fe, max. 0.00005% w/w Ca, max. 0.00005% w/w Na, max. 0.0002% w/w P, further impurities of individually max. 0.02% w/w and aluminium as remainder.
  • a casting alloy of type AlMgSi known from EP-A-1 234 893 contains 3.0 to 7.0% w/w Mg, 1.7 to 3.0% w/w Si, 0.2 to 0.48% w/w Mn, 0.15 to 0.35% w/w Fe, max. 0.2% w/w Ti, optionally also 0.1 to 0.4% w/w Ni and Al as remainder and manufacturing-related impurities of individually max. 0.02% w/w and max. 0.2% w/w in total, with the further condition that magnesium and silicon in the alloy essentially exist in a ratio Mg:Si of 1.7:1 by weight, corresponding to the composition of the quasi-binary eutectic with the solid phases Al and Mg 2 Si.
  • the alloy is suitable for the production of safety components in motor vehicles by pressure die casting, rheocasting and thixocasting.
  • the object of the invention is to provide an aluminium alloy with good creep strength at elevated temperatures for the production of components subject to high thermal and mechanical stresses.
  • the alloy should be suitable in particular for pressure die casting, but also for gravity die casting, low-pressure die casting and sand casting.
  • a specific object of the invention is the provision of an aluminium alloy for cylinder crankcases of internal combustion engines, in particular of diesel engines, produced by pressure die casting.
  • the components cast from the alloy should exhibit high strength together with high ductility.
  • the intended mechanical properties in the component are defined as follows:
  • the castability of the alloy should be comparable with the castability of the AlSiCu casting alloys currently used, and the alloy should not show any tendency to hot shortness.
  • the object is achieved with the solution according to the invention in that the contents of the alloying elements magnesium and silicon in % w/w in a Cartesian coordinate system are limited 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] and that the alloy also contains
  • alloys whose contents of the alloying elements magnesium and silicon in % w/w in a Cartesian coordinate system are limited 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].
  • the alloying elements Mn and Fe allow sticking of the castings to the mould to be avoided. A higher iron content results in a higher high-temperature strength at the expense of reduced elongation. Mn contributes also significantly to red hardness. Depending on the field of application, the alloying elements Fe and Mn are therefore preferably balanced with one another as follows:
  • a content of 0.4 to 1% w/w Fe in particular 0.5 to 0.7% w/w Fe, a content of 0.1 to 0.5% w/w Mn, in particular 0.3 to 0.5% w/w Mn, is set.
  • a content of max. 0.2% w/w Fe in particular max. 0.15% w/w Fe, a content of 0.5 to 1% w/w Mn, in particular 0.5 to 0.8% w/w Mn, is set.
  • Titanium and zirconium improve the grain refinement.
  • a good grain refinement contributes significantly to an improvement in the casting properties and mechanical properties.
  • Beryllium in combination with vanadium reduces the formation of dross.
  • 0.02 to 0.15% w/w V preferably 0.02 to 0.08% w/w V, in particular 0.02 to 0.05% w/w V, less than 60 ppm Be are sufficient.
  • a preferred field of application of the aluminium alloy according to the invention is the production of components subject to high thermal and mechanical stresses by pressure die casting, mould casting or sand casting, in particular for cylinder crankcases for automotive engines produced by the pressure die casting method.
  • the alloy according to the invention also satisfies the mechanical properties demanded for structural components in automotive construction after a single-stage heat treatment without separate solution annealing.
  • FIG. 1 a diagram with the content limits for the alloying elements Mg and Si according to the invention.
  • the polygon A shown in FIG. 1 defines the content range for the alloying elements Mg and Si, the polygons B and C refer to preferred ranges.
  • the straight line E corresponds to the composition of the quasi-binary eutectic Al—Mg 2 Si.
  • the alloy compositions according to the invention thus lie on the side with an excess of magnesium.
  • the alloy according to the invention was cast into pressure die cast plates with different wall thicknesses. Tensile strength test specimens were manufactured from the pressure die cast plates. The mechanical properties proof strength (Rp0.2), tensile strength (Rm) and elongation at break (A) were determined on the tensile strength test specimens in the conditions
  • the alloys examined are summarized in Table 1.
  • the letter A indicates alloys with copper additive, the letter B alloys without copper additive.
  • Table 2 shows the results of the mechanical properties determined on tensile strength test specimens of the alloys in Table 1.
  • the results of the long-term tests underline the good creep strength at elevated temperatures of the alloy according to the invention.
  • the mechanical properties after a single-stage heat treatment at 350° C. and 380° C. for 90 minutes indicate furthermore that the alloy according to the invention also satisfies the demands made for structural components in automotive construction.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (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)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Secondary Cells (AREA)
  • Cookers (AREA)
US11/506,765 2005-08-22 2006-08-18 High temperature aluminium alloy Abandoned US20100074796A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1371/05 2005-08-22
CH13712005 2005-08-22

Publications (1)

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US20100074796A1 true US20100074796A1 (en) 2010-03-25

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

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103421992A (zh) * 2013-07-16 2013-12-04 沈军 一种超轻铝合金气门凸轮轴正时链轮装置制造工艺
US20140290437A1 (en) * 2011-05-03 2014-10-02 Thomas Pabel Method For The Refining And Structure Modification Of AL-MG-SI Alloys
US20150167127A1 (en) * 2013-12-18 2015-06-18 Hyundai Motor Company Aluminum alloy and vehicle part using the same
WO2016034857A1 (en) * 2014-09-01 2016-03-10 Brunel University A casting al-mg-zn-si based aluminium alloy for improved mechanical performance
US20170252800A1 (en) * 2014-10-29 2017-09-07 Kmw Inc. Aluminum alloy for die-casting, having improved corrosion resistance
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
US20190136350A1 (en) * 2016-04-19 2019-05-09 Rheinfelden Alloys Gmbh & Co. Kg Alloy for Pressure Die-Casting
DE102019214740B3 (de) * 2019-09-26 2021-02-04 Daimler Ag Verfahren zur Herstellung eines Bauteils aus einer Aluminiumlegierung
US11421305B2 (en) 2016-04-19 2022-08-23 Rheinfelden Alloys Gmbh & Co. Kg Cast alloy

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CN103031473B (zh) * 2009-03-03 2015-01-21 中国科学院苏州纳米技术与纳米仿生研究所 高韧性Al-Si系压铸铝合金的加工方法
JP5482787B2 (ja) * 2009-03-31 2014-05-07 日立金属株式会社 耐力に優れた鋳造用Ａｌ−Ｍｇ−Ｓｉ系アルミニウム合金及びそれからなる鋳造部材
CN102041415A (zh) * 2009-10-26 2011-05-04 浙江艾默樱零部件有限公司 耐高温铝合金炉头合金及其制作方法
KR101271004B1 (ko) * 2010-12-13 2013-06-04 자동차부품연구원 코발트-니켈 전율고용체를 포함하는 소성가공형 알루미늄 전신재 및 그 제조방법
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
CN102296218A (zh) * 2011-08-24 2011-12-28 吴江市精工铝字制造厂 高强度耐热性镁铝合金
GB201402323D0 (en) * 2014-02-11 2014-03-26 Univ Brunel A high strength cast aluminium alloy for high pressure die casting
KR101620204B1 (ko) * 2014-10-15 2016-05-13 현대자동차주식회사 다이캐스팅 부품용 합금 및 그 제조방법
CN105132756A (zh) * 2015-09-18 2015-12-09 张家港市和伟五金工具厂 一种耐热铝合金
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
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
EP3670689B1 (de) 2018-12-20 2023-10-18 Aluminium Rheinfelden Alloys GmbH Warmfeste aluminiumlegierung
CN111809086B (zh) 2019-04-12 2021-12-07 比亚迪股份有限公司 一种压铸铝合金及其制备方法和应用
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
CN120400635A (zh) * 2025-07-03 2025-08-01 东北大学 一种免热处理自强化Al-Mg铝合金及其制备方法

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US20070240796A1 (en) * 2003-11-11 2007-10-18 Eads Deutschland Gmbh Cast Aluminium Alloy

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US3868250A (en) * 1971-06-14 1975-02-25 Honsel Werke Ag Heat resistant alloys
US5178686A (en) * 1988-12-20 1993-01-12 Metallgesellschaft Aktiengesellschaft Lightweight cast material
US20070240796A1 (en) * 2003-11-11 2007-10-18 Eads Deutschland Gmbh Cast Aluminium Alloy

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9279170B2 (en) * 2011-05-03 2016-03-08 Sag Motion Gmbh Method for the refining and structure modification of AL-MG-SI alloys
US20140290437A1 (en) * 2011-05-03 2014-10-02 Thomas Pabel Method For The Refining And Structure Modification Of AL-MG-SI Alloys
CN103421992A (zh) * 2013-07-16 2013-12-04 沈军 一种超轻铝合金气门凸轮轴正时链轮装置制造工艺
US9957591B2 (en) * 2013-12-18 2018-05-01 Hyundai Motor Company Aluminum alloy and vehicle part using the same
US20150167127A1 (en) * 2013-12-18 2015-06-18 Hyundai Motor Company Aluminum alloy and vehicle part using the same
WO2016034857A1 (en) * 2014-09-01 2016-03-10 Brunel University A casting al-mg-zn-si based aluminium alloy for improved mechanical performance
US20170252800A1 (en) * 2014-10-29 2017-09-07 Kmw Inc. Aluminum alloy for die-casting, having improved corrosion resistance
US10525528B2 (en) * 2014-10-29 2020-01-07 Kmw Inc. Aluminum alloy for die-casting, having improved corrosion resistance
US20190136350A1 (en) * 2016-04-19 2019-05-09 Rheinfelden Alloys Gmbh & Co. Kg Alloy for Pressure Die-Casting
US10669615B2 (en) * 2016-04-19 2020-06-02 Rheinfelden Alloys Gmbh & Co. Kg Alloy for pressure die-casting
US11421305B2 (en) 2016-04-19 2022-08-23 Rheinfelden Alloys Gmbh & Co. Kg Cast alloy
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
DE102019214740B3 (de) * 2019-09-26 2021-02-04 Daimler Ag Verfahren zur Herstellung eines Bauteils aus einer Aluminiumlegierung

Also Published As

Publication number Publication date
CA2556645C (en) 2014-01-14
CN100999797B (zh) 2011-01-26
MXPA06009523A (es) 2007-03-01
BRPI0603394B1 (pt) 2014-07-29
BRPI0603394A (pt) 2007-04-27
JP5007086B2 (ja) 2012-08-22
CA2556645A1 (en) 2007-02-22
ATE376075T1 (de) 2007-11-15
DE502006000145D1 (de) 2007-11-29
EP1757709B1 (de) 2007-10-17
NO20063736L (no) 2007-02-23
JP2007084922A (ja) 2007-04-05
NO343257B1 (no) 2019-01-02
EP1757709A1 (de) 2007-02-28
CN100999797A (zh) 2007-07-18
KR101409586B1 (ko) 2014-06-20
KR20070022610A (ko) 2007-02-27

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