王钟斐,李蒙

• 1:宝鸡文理学院数学与信息科学学院
• 2:宝钛集团有限公司

摘要(Abstract)：

利用XRD、OM、SEM、TEM和室温拉伸实验等方法研究了均匀化热处理对Mg-5Gd-3Y-1Nd-2Zn-0.5Zr(mass%)合金组织及力学性能的影响。结果表明:铸态组织主要由等轴的α-Mg基体、晶界上的(Mg,Zn)3RE相、14H型LPSO结构相及靠近晶界处α-Mg基体中的堆垛层错组成;均匀化热处理后,(Mg,Zn)3RE相和堆垛层错都消失了,在晶界上出现了网状形貌的14H型LPSO结构相。室温拉伸实验表明:铸态合金的抗拉强度,屈服强度和伸长率分别为170 MPa,120 MPa和2.0%;经过520℃均匀化热处理32 h后,合金的抗拉强度,屈服强度和伸长率分别为240 MPa,158 MPa和10.0%。

关键词(KeyWords)： 14H-LPSO;堆垛层错;微观组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 宝鸡文理学院校级重点项目(ZK2017001)

作者(Author): 王钟斐,李蒙

DOI: 10.13289/j.issn.1009-6264.2017-0050

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