张利,刘正,毛萍莉

• 1:沈阳工业大学材料科学与工程学院
• 2:沈阳航空航天大学材料科学与工程学院

摘要(Abstract)：

采用光学显微镜,扫描电子显微镜等手段研究了退火处理对热挤压Mg-3.8%Zn-1%Y合金组织及性能的影响。结果表明,该合金经425℃×15 min退火可通过完全再结晶获得细小的晶粒,合金的拉伸屈服强度为171.9 MPa,伸长率为29.8%。EBSD分析表明合金的优良的塑性来自于合金在拉伸过程中拉伸压缩({10 12}-{10 11})二次孪生的交互发生引起的协调变形。另外,拉伸过程中形成的较弱的"双峰"型{0002}纤维织构作为变形有利的取向也有利于改善合金的塑性。

关键词(KeyWords)： 退火处理;热挤压;Mg-3.8Zn-1Y合金;准晶Mg3Zn6Y相;二次孪生

Abstract:

Keywords:

基金项目(Foundation): 辽宁省科技攻关计划(2013201018);; 辽宁省高校创新团队支持计划

作者(Author): 张利,刘正,毛萍莉

DOI: 10.13289/j.issn.1009-6264.2014.10.006

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