李晓娜

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

扫描关注

论文成果

当前位置: 中文主页 >> 科学研究 >> 论文成果

Microstructure evolution and strengthening mechanism of Cu-x[Ni3Mo] alloys

点击次数:

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.