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

被引：1
|
作者：
Yang, Mingbo [1 ,2 ]
Qin, Caiyuan [1 ]
Liang, Xiaofeng [1 ]
Pan, Fusheng [3 ]
机构：
[1] Chongqing Univ Technol, Mat Sci & Engn Coll, Chongqing 400054, Peoples R China
[2] Chongqing Univ Technol, Educ Minist, Key Lab Automobile Components Mfg & Testing Techn, Chongqing 400054, Peoples R China
[3] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400045, Peoples R China
来源：
ADVANCED STRUCTURAL MATERIALS | 2011年 / 686卷
关键词：
Magnesium alloy; Mg-3Sn-2Ca alloy; Sr; microstructure;
D O I：
10.4028/www.scientific.net/MSF.686.271
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
引用
收藏
页码：271 / +
页数：2
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