EP2159293A2 - Kriechbeständige Magnesiumlegierung - Google Patents

Kriechbeständige Magnesiumlegierung Download PDF

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Publication number
EP2159293A2
EP2159293A2 EP09168253A EP09168253A EP2159293A2 EP 2159293 A2 EP2159293 A2 EP 2159293A2 EP 09168253 A EP09168253 A EP 09168253A EP 09168253 A EP09168253 A EP 09168253A EP 2159293 A2 EP2159293 A2 EP 2159293A2
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EP
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Prior art keywords
magnesium alloy
magnesium
weight
alloy
calcium
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Application number
EP09168253A
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English (en)
French (fr)
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EP2159293B1 (de
EP2159293A3 (de
Inventor
Hajo Dieringa
Norbert Hort
Karl Ulrich Kainer
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Helmholtz Zentrum Hereon GmbH
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GKSS Forshungszentrum Geesthacht GmbH
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium
    • C22C23/02—Alloys based on magnesium with aluminium as the next major constituent

Definitions

  • the present invention relates to a creep resistant magnesium alloy.
  • Magnesium containing metal alloys are widely used in the automotive, electronics, aerospace, and other engineering industries.
  • such alloys are advantageous, which are high temperature creep resistant and therefore can be used in a high temperature environment.
  • magnesium alloys have already been developed and standardized, such as the magnesium alloys JIS H 5203 (MC1-MC10) and JIS H 5303 (MDC1A, MDC1B).
  • alloy A developed by Dow Chemical of composition Mg-4% Al-2% SE (SE - rare earth elements) is also well known.
  • the DE 44 46 898 A1 discloses creep resistant magnesium alloys containing: 1.5 to 10% by weight of aluminum (Al), less than 2% by weight of rare earth elements (SE), 0.25 to 5.5% by weight of calcium (Ca) and magnesium In addition, the alloy may contain 0.2 to 2.5% by weight of copper and / or zinc.
  • the DE 22 01 460 A1 also discloses creep resistant magnesium alloys containing aluminum and optionally another element selected from calcium, zirconium, titanium, silicon, strontium, yttrium, cerium or barium. A combination of barium and calcium as additional elements is not disclosed.
  • the object of the present invention is therefore to provide a magnesium alloy, with which the disadvantages of the above-mentioned prior art can be overcome and also has a higher creep resistance.
  • the object is achieved by a magnesium-containing metal alloy or magnesium alloy, based on the total weight of the alloy 1 to 9 wt .-% aluminum (Al), 0.5 to 5 wt.% Barium (Ba), 0.5 to 5 wt % Calcium (Ca) as well as magnesium (Mg) and unavoidable manufacturing impurities as balance.
  • the unavoidable manufacturing impurities are present in a total amount based on the total weight of the alloy of not more than 2% by weight.
  • the proportion of aluminum is preferably 2 to 7% by weight, more preferably 3 to 6% by weight.
  • the proportion of barium is preferably 1 to 4% by weight, more preferably 1.5 to 3% by weight.
  • the proportion of calcium is preferably 1 to 4% by weight, more preferably 1.5 to 3% by weight.
  • the magnesium alloy according to the invention may additionally contain zinc, tin, lithium, manganese, yttrium, neodymium, cerium and / or praseodymium in proportions of in each case up to 7% by weight.
  • the magnesium alloy of the invention has a variety of applications; preferably, it can be used for the manufacture of components of automobiles, ships and / or aircraft, more preferably for the production of drive trains or their components.
  • FIG. 1 shows the creep deformation as a function of time at an applied stress of 80 MPa and a temperature of 200 ° C of two magnesium alloys (ABC alloys) according to the invention containing about 4 wt.% Aluminum, about 2 wt.% Barium and about 1 % By weight of calcium (ABC421) or about 4% by weight of aluminum, about 2% by weight of barium and about 2% by weight of calcium (ABC422) in comparison to the conventional alloy AE42, where E stands for rare earth elements, or an alloy with the designation MRI230D the company Dead Sea Magnesium, which contains in addition to aluminum and calcium Seltenderdmaschine.
  • the alloys according to the invention have a significantly lower creep deformation than the respective comparative alloys. It follows that you can either increase the temperature at constant voltage or that you can load a component much longer.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Gears, Cams (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Die vorliegende Erfindung betrifft eine Magnesium-Aluminiumlegierung mit erhöhter Kriechbeständigkeit. Die Legierung enthält einen geringen Anteil an Barium und Kalzium und besitzt eine höhere Kriechbeständigkeit im Vergleich zu Legierungen, die Seltenerdelemente enthalten. Die Legierung kann weiterhin Zink, Zinn, Lithium, Mangan, Yttrium, Neodym, Cer und/oder Praseodym in Anteilen von jeweils bis zu 7 Gew.% enthalten.

Description

  • Die vorliegende Erfindung betrifft eine kriechbeständige Magnesiumlegierung.
  • Magnesium enthaltende Metallegierungen werden in grossem Umfang in der Automobilindustrie, der Elektronikindustrie, der Luft/Raumfahrt-Industrie und auf verschiedenen anderen Gebieten der Technik eingesetzt. Dabei sind insbesondere solche Legierungen von Vorteil, die hochtemperaturkriechfest sind und daher in einer Umgebung mit hoher Temperatur eingesetzt werden können.
  • Es sind bereits verschiedene Magnesiumlegierungen entwickelt und genormt worden, wie die Magnesiumlegierungen JIS H 5203 (MC1-MC10) und JIS H 5303 (MDC1A, MDC1B). Für den Einsatz bei hohen Temperaturen ist die von der Firma Dow Chemical entwikkelte Legierung A mit der Zusammensetzung Mg-4%Al-2%SE (SE - Seltene Erdelemente) ebenfalls gut bekannt.
  • Solche wärmebeständigen Magnesiumlegierungen sind jedoch beim Formguss schlecht anwendbar, wo nach dem Formen eines Metallgegenstandes eine schnelle Abkühlung bewirkt werden muss.
  • Die DE 44 46 898 A1 offenbart kriechbeständige Magnesiumlegierungen, enthaltend: 1,5 bis 10 Gew.-% Aluminium (Al), weniger als 2 Gew.-% Seltene Erdelemente (SE), 0,25 bis 5,5 Gew.-% Calcium (Ca) und Magnesium als Rest. Zusätzlich kann die Legierung 0,2 bis 2,5 Gew.-% Kupfer und/oder Zink enthalten.
  • Die in solchen Legierungen enthaltenen Seltenen Erdelemente erhöhen allerdings die Kosten der Legierung.
  • Die DE 22 01 460 A1 offenbart ebenfalls kriechbeständige Magnesiumlegierungen mit einem Gehalt an Aluminium und gegebenenfalls einem weiteren Element, ausgewählt aus Kalzium, Zirkon, Titan, Silizium, Strontium, Yttrium, Cer oder Barium. Eine Kombination von Barium und Kalzium als zusätzliche Elemente ist nicht offenbart.
  • Die Aufgabe der vorliegenden Erfindung besteht somit darin, eine Magnesiumlegierung anzugeben, mit der die Nachteile des oben angesprochenen Standes der Technik überwunden werden können und die zudem eine höhere Kriechbeständigkeit aufweist.
  • Die Aufgabe wird durch eine Magnesium enthaltende Metallegierung oder Magnesiumlegierung gelöst, die bezogen auf das Gesamtgewicht der Legierung 1 bis 9 Gew.-% Aluminium (Al), 0,5 bis 5 Gew.% Barium (Ba), 0,5 bis 5 Gew.-% Kalzium (Ca) sowie Magnesium (Mg) und unvermeidbare herstellungsbedingte Verunreinigungen als Rest enthält. Vorzugsweise sind die unvermeidbaren herstellungsbedingten Verunreinigungen in einer Gesamtmenge bezogen auf das Gesamtgewicht der Legierung von nicht über 2 Gew.% vorhanden. Der Anteil an Aluminium beträgt vorzugsweise 2 bis 7 Gew.%, bevorzugter 3 bis 6 Gew.%. Der Anteil an Barium beträgt vorzugsweise 1 bis 4 Gew.%, bevorzugter 1,5 bis 3 Gew.%. Der Anteil an Kalzium beträgt vorzugsweise 1 bis 4 Gew.%, bevorzugter 1,5 bis 3 Gew.%.
  • Die erfindungsgemäße Magnesiumlegierung kann zusätzlich Zink, Zinn, Lithium, Mangan, Yttrium, Neodym, Cer und/oder Praseodym in Anteilen von jeweils bis zu 7 Gew.% enthalten.
  • Die erfindungsgemäße Magnesiumlegierung findet vielfältige Anwendungsbereiche; vorzugsweise kann sie zur Herstellung von Bauteilen von Automobilen, Schiffen und/oder Flugzeugen, bevorzugter zur Herstellung von Antriebssträngen oder deren Bauteilen verwendet werden.
  • Die Erfindung wird im folgenden unter Bezugnahme auf die beigefügte Figur näher erläutert. Figur 1 zeigt die Kriechverformung in Abhängigkeit der Zeit bei einer anliegenden Spannung von 80 MPa und einer Temperatur von 200°C von zwei erfindungsgemäßen Magnesiumlegierungen (ABC-Legierungen) mit einem Gehalt von etwa 4 Gew.% Aluminium, etwa 2 Gew.% Barium und etwa 1 Gew.% Kalzium (ABC421) bzw. etwa 4 Gew.% Aluminium, etwa 2 Gew.% Barium und etwa 2 Gew.% Kalzium (ABC422) im Vergleich zur herkömmlichen Legierung AE42, wobei E für Seltenerdelemente steht, bzw. einer Legierung mit der Bezeichnung MRI230D der Firma Dead Sea Magnesium, die neben Aluminium und Kalzium Seltenderdelemente enthält.
  • Die erfindungsgemäßen Legierungen weisen eine deutlich geringere Kriechverformung als die jeweiligen Vergleichslegierungen auf. Daraus folgt, dass man bei konstanter Spannung entweder die Temperatur noch erhöhen darf oder dass man ein Bauteil deutlich länger belasten kann.

Claims (7)

  1. Magnesiumlegierung, die bezogen auf das Gesamtgewicht der Legierung folgende Bestandteile enthält:
    1 bis 9 Gew.% Aluminium
    0,5 bis 5 Gew.% Barium
    0,5 bis 5 Gew.% Kalzium und
    Magnesium als Rest.
  2. Magnesiumlegierung nach Patentanspruch 1, dadurch gekennzeichnet, dass sie zusätzlich Zink, Zinn, Lithium, Mangan, Yttrium, Neodym, Cer und/oder Praseodym in Anteilen von jeweils bis zu 7 Gew.% enthält.
  3. Magnesiumlegierung nach einem der vorgehenden Patentansprüche, dadurch gekennzeichnet, dass der Anteil an Aluminium 2 bis 7 Gew.%, vorzugsweise 3 bis 6 Gew.% beträgt.
  4. Magnesiumlegierung nach einem der vorgehenden Patentansprüche, dadurch gekennzeichnet, dass der Anteil an Barium 1 bis 4 Gew.%, vorzugsweise 1,5 bis 3 Gew.% beträgt.
  5. Magnesiumlegierung nach einem der vorgehenden Patentansprüche, dadurch gekennzeichnet, dass der Anteil an Kalzium 1 bis 4 Gew.%, vorzugsweise 1,5 bis 3 Gew.% beträgt.
  6. Verwendung einer Magnesiumlegierung gemäß einem der Patentansprüche 1 bis 5 zur Herstellung von Bauteilen von Automobilen, Schiffen und/oder Flugzeugen.
  7. Verwendung einer Magnesiumlegierung gemäß einem der Patentansprüche 1 bis 5 zur Herstellung von Antriebssträngen oder deren Bauteile.
EP09168253.4A 2008-08-26 2009-08-20 Kriechbeständige Magnesiumlegierung Not-in-force EP2159293B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008039683A DE102008039683B4 (de) 2008-08-26 2008-08-26 Kriechbeständige Magnesiumlegierung

Publications (3)

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EP2159293A2 true EP2159293A2 (de) 2010-03-03
EP2159293A3 EP2159293A3 (de) 2012-05-30
EP2159293B1 EP2159293B1 (de) 2015-07-08

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US (1) US20100054985A1 (de)
EP (1) EP2159293B1 (de)
JP (1) JP2010065318A (de)
CN (1) CN101676423A (de)
AU (1) AU2009208050A1 (de)
CA (1) CA2675863A1 (de)
DE (1) DE102008039683B4 (de)
ES (1) ES2548582T3 (de)
IL (1) IL200309A0 (de)
PT (1) PT2159293E (de)

Cited By (1)

* Cited by examiner, † Cited by third party
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US8435444B2 (en) 2009-08-26 2013-05-07 Techmag Ag Magnesium alloy

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KR101080164B1 (ko) 2011-01-11 2011-11-07 한국기계연구원 발화저항성과 기계적 특성이 우수한 마그네슘 합금 및 그 제조방법
CN102242298A (zh) * 2011-07-04 2011-11-16 四川大学 一种Al、Zn强化Mg-Sn-RE基高强韧耐热镁合金
CN103789589B (zh) * 2014-03-04 2015-09-09 南京信息工程大学 一种高阳极利用率电池材料及制备方法
CN104087803B (zh) * 2014-07-28 2016-08-24 王雨晴 一种抗蠕变镁合金及其制备方法
CN105543522A (zh) * 2016-01-06 2016-05-04 安徽祈艾特电子科技股份有限公司 一种用于铸造汽车零部件的纳米硼化锆改性的Mg-Al-Zn系镁合金材料及其制备方法
CN106521274A (zh) * 2016-10-27 2017-03-22 江苏理工学院 一种高强度镁‑锂‑铝‑钇‑钙合金及其制备方法
CN106566966B (zh) * 2016-11-18 2018-06-26 哈尔滨理工大学 一种高熵合金作为增强基的镁基复合材料及其制备方法
US20200232070A1 (en) 2019-01-18 2020-07-23 Divergent Technologies, Inc. Aluminum alloy compositions
CN111726655B (zh) * 2020-07-02 2022-09-06 中影华夏寰宇(北京)电影科技有限公司 视频处理装置、方法和系统
CN112442620B (zh) * 2020-10-29 2021-10-01 航天材料及工艺研究所 一种300MPa级镁锂合金材料及其制备方法
US12365965B2 (en) 2021-07-01 2025-07-22 Divergent Technologies, Inc. Al—Mg—Si based near-eutectic alloy composition for high strength and stiffness applications
DE102022109070A1 (de) 2022-04-13 2023-10-19 Soluterials Verwaltungs und Verwertungs UG (haftungsbeschränkt) Leichtmetall-Matrixverbundwerkstoff auf Magnesiumbasis und Verfahren zu seiner Herstellung

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DE4446898A1 (de) 1993-06-28 1996-07-04 Ube Industries Magnesiumlegierung

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DE2201460A1 (de) 1972-01-13 1973-07-19 Erdmann Jesnitzer Friedrich Pr Magnesiumlegierungen mit hohem kriechwiderstand bei erhoehten temperaturen
DE4446898A1 (de) 1993-06-28 1996-07-04 Ube Industries Magnesiumlegierung

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Publication number Publication date
EP2159293B1 (de) 2015-07-08
CN101676423A (zh) 2010-03-24
DE102008039683A1 (de) 2010-03-04
JP2010065318A (ja) 2010-03-25
IL200309A0 (en) 2010-05-31
AU2009208050A1 (en) 2010-03-18
CA2675863A1 (en) 2010-02-26
PT2159293E (pt) 2015-09-16
DE102008039683B4 (de) 2010-11-04
US20100054985A1 (en) 2010-03-04
ES2548582T3 (es) 2015-10-19
EP2159293A3 (de) 2012-05-30

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