Magnesium Die Cast Alloys for Elevated Temperature Applications

Mercer, William E.

doi:10.4271/900788

Cited by 41 publications

(8 citation statements)

References 7 publications

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“…This alloy system exhibits major improvement in creep resistance due to the complete suppression of the formation of the b-(Mg 17 Al 12 ) phase and the presence, instead, of the Al-RE containing intermetallics. [15] In a review by Aune and Westengen on mechanical properties of various magnesium alloys, it has been shown that the ultimate tensile strength increases with the Al and RE content in the alloy, and that tensile yield strength primarily depends on the amount of RE and attains a limiting maximum level. [14] For a given rare earth content in the alloy the creep strength was reported to decrease with increasing aluminum content, while for a given aluminum content it increased with increasing amount of rare earth addition.…”

Section: Mg-al-re Alloysmentioning

confidence: 99%

“…[14] For a given rare earth content in the alloy the creep strength was reported to decrease with increasing aluminum content, while for a given aluminum content it increased with increasing amount of rare earth addition. [15] There have been a number of studies aimed at identifying the second phases in AE alloy family. Polmear has claimed that Mg-Al alloys containing RE addition are suitable only for diecasting since slow cooling rates lead to the formation of coarse Al 2 RE particles.…”

Section: Mg-al-re Alloysmentioning

confidence: 99%

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Creep Resistant Magnesium Alloys for Powertrain Applications

Pekguleryuz¹,

Kaya²

2003

Adv Eng Mater

390

187

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Creep resistant magnesium alloys are candidate materials for automotive powertrain applications. Since the 90's, a number of new creep‐resistant magnesium alloy systems have been investigated and developed. These are for the most part based on rare‐earth, alkaline earth, and silicon additions. This paper gives an overview of creep resistance in magnesium and a review of creep resistant magnesium alloys for power‐train applications.

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Section: Mg-al-re Alloysmentioning

confidence: 99%

Section: Mg-al-re Alloysmentioning

confidence: 99%

Creep Resistant Magnesium Alloys for Powertrain Applications

Pekguleryuz¹,

Kaya²

2003

Adv Eng Mater

390

187

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“…2) Research on Ca addition to Mg-Al based alloys has been performed since 1960. [2][3][4][5][6][7][8][9][10][11][12][13][14][15] It has been clear that Ca addition beyond a certain level to AM50 alloy enhances hot cracking tendency, though it improves creep resistance. Recently, a new Mg-Al-Ca alloy containing small additions of Sr and/or Si has been developed at General Motors Corporation.…”

Section: )mentioning

confidence: 99%

Effects of Ca,Sr Additions on Properties of Mg-Al Based Alloys

Nakaura¹,

Watanabe²,

Ohori³

2006

Mater. Trans.

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Effects of Ca alone and Ca/Sr composite additions on microstructures, die castability, mechanical properties and creep properties of the Mg-Al based alloys are investigated for the purpose of the development of new Mg-Al-Ca-Sr alloy for automotive powertrain applications. Ca addition of more than about 1% to AM50 alloy significantly improves creep resistance but also enhance casting crack tendency. By the addition of approximately 0.2%Sr, such casting cracks are significantly suppressed, and besides creep resistance and mechanical properties increase. The improvement of creep resistance by Sr addition seems to be attributed to the suppression of grain boundary sliding due to the creation of thermally stable Al-Sr compound along the grain boundary and the suppression of discontinuous precipitation of -Mg 17 Al 12 phase.

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“…Mg-Ce based alloys are known for their creep resistance, which is due, for the most part, to the existence of Ce-containing intermetallics in the microstructure [1,2]. The potential effect of these intermetallics can be analyzed with respect to their metallurgical/ thermal stability and stoichiometry.…”

Section: Introductionmentioning

confidence: 99%