中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 20 Special 2 July 2010 |
（1. State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Shenyang 110016, China;
2. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China）
Abstract:The Mg-5Sn-1Ca-xGd (x=0, 1) alloys were chosen to investigate the change in solidification paths, phase formation and mechanical properties. The microstructure of as-cast Mg-5Sn-1Ca alloy is composed of α-Mg, Mg2Sn and CaMgSn phases. With the addition of Gd, the formation of the Mg2Sn phase is impeded and the CaMgSn phase is refined, whereas the ultimate tensile strength and elongation decrease. The possible reasons for the variation in microstructure and mechanical properties were discussed.
Key words: magnesium alloy; Mg-Sn-Ca alloy; thermal analysis; mechanical property
