Observation of Microstructural Refinement in Mg-3Sn-2Ca Magnesium Alloy Containing Minor Sr

Ming Bo Yang; Cai Yuan Qin; Xiao Feng Liang; Fu Sheng Pan

doi:10.4028/www.scientific.net/MSF.686.271

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HomeMaterials Science ForumMaterials Science Forum Vol. 686Observation of Microstructural Refinement in...

Observation of Microstructural Refinement in Mg-3Sn-2Ca Magnesium Alloy Containing Minor Sr

Abstract:

The microstructures of the Mg-3Sn-2Ca magnesium alloys with and without adding minor Sr were investigated and compared. The results indicate that adding 0.1 wt.% Sr to the Mg-3Sn-2Ca alloy can effectively refine the primary CaMgSn phases and grains. In addition, in the alloy containing minor Sr the volume fraction of the primary and eutectic CaMgSn phases appears to be decreased, whereas the volume fraction of the Mg₂Ca precipitates seems to be increased. The mechanism for the microstructural change in the alloy containing minor Sr is possibly related to the effects of Sr additions on the onset crystallizing temperature and undercooling degree.

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Periodical:

Materials Science Forum (Volume 686)

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271-275

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.686.271

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Online since:

June 2011

Authors:

Ming Bo Yang, Cai Yuan Qin, Xiao Feng Liang, Fu Sheng Pan

Keywords:

Magnesium Alloy, Mg-3Sn-2Ca Alloy, Microstructure, SR

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