个人信息Personal Information
教授
博士生导师
硕士生导师
性别:女
毕业院校:大连理工大学
学位:博士
所在单位:材料科学与工程学院
学科:材料物理与化学
办公地点:三束实验室2号楼302室
联系方式:0411-84708380-8302
电子邮箱:lixiaona@dlut.edu.cn
Microstructure evolution and strengthening mechanism of Cu-x[Ni3Mo] alloys
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论文类型:期刊论文
发表时间:2019-01-02
发表刊物:MATERIALS SCIENCE AND TECHNOLOGY
收录刊物:SCIE、EI
卷号:35
期号:1
页面范围:98-106
ISSN号:0267-0836
关键字:Cu-Ni-Mo alloys; strengthening mechanism; precipitates; microstructure
摘要:Mo could be dissolved into Cu to increase its high-temperature stability via a Ni intermediate. The microstructure evolution and strengthening mechanism of Cu-x[Ni3Mo] (x = 1, 2, 3, 4, 5, 7, 9, 12) alloys were investigated. The results show that composition significantly affects strengthening mechanisms of the alloys. For x = 1 and 2, The strengthening mechanisms of the alloys are mainly precipitation strengthening derived from Ni2Mo and Ni4Mo nanophases, both of which coexist and coherently grow on the face-centered cubic matrix. For x = 3-5, the nanophases gradually decrease and spinodal decomposition structure increases, which transforms the strengthening mechanism to spinodal decomposition strengthening. For x = 7-12, spinodal decomposition structure and precipitates reduce significantly, the solution strengthening dominates namely.