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

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.

关键词： Magnesium alloy Mg-3Sn-2Ca alloy Sr microstructure

作者: Mingbo YANG Caiyuan QIN Xiaofeng LIANG Fusheng PAN

作者单位: Science & Engineering College, Chongqing University of Technology,Chongqing 400054, China Key Labora Materials Science & Engineering College, Chongqing University of Technology,Chongqing 400054, China National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400045, C

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 271-275

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）