李克杰,李全安

• 1:台州职业技术学院机电工程学院
• 2:河南科技大学材料科学与工程学院

摘要(Abstract)：

通过SF6+CO2气体保护,在大气环境下制备了Mg-12Gd-2Y-(0.5Sm,0.5Sb)-0.5Zr镁合金,采用OM、SEM、XRD和TEM等手段研究了20～300℃下时效态合金的显微组织和力学性能。结果表明:随Sm、Sb的加入,试验合金晶粒细化,合金屈服强度提高。随实验温度升高,屈服强度略微降低,抗拉强度提高。该合金具有抗拉强度的温度效应。断口分析表明,合金具有沿晶断裂+局部解理断裂的混合断口特征。

关键词(KeyWords)： 镁合金;稀土;Sm;Sb;组织性能;强化机制

Abstract:

Keywords:

基金项目(Foundation): 河南省杰出人才计划(084200510018);; 河南省基础与前沿技术研究计划(102300410018);; 浙江省高等学校优秀青年教师资助计划;; 浙江省公益性技术应用研究计划项目

作者(Author): 李克杰,李全安

DOI: 10.13289/j.issn.1009-6264.2011.05.022

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