个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:哈尔滨工业大学
学位:博士
所在单位:材料科学与工程学院
学科:材料加工工程
办公地点:铸造中心101
联系方式:0411-84706220
电子邮箱:jiejc@dlut.edu.cn
Influence of cold deformation and Ti element on the microstructure and properties of Cu-Cr system alloys
点击次数:
论文类型:期刊论文
发表时间:2015-07-14
发表刊物:JOURNAL OF MATERIALS RESEARCH
收录刊物:SCIE、EI、Scopus
卷号:30
期号:13
页面范围:2073-2080
ISSN号:0884-2914
摘要:The Cu-Cr system alloys with different Ti contents were prepared and processed by deformation and heat treatment. The microstructures, mechanical, and electrical properties were investigated under as-cast and aged conditions. The results indicate that the Cr precipitates present a dispersed distribution and exhibit a face-centered cubic (fcc) structure rather than equilibrium body-centered cubic (bcc) structure in the initial stage of aging. A certain amount of Ti atoms dissolves in matrix due to the large solid solubility, while the remaining atoms segregate around the interface of the Cr precipitates to form a sandwich structure. Improvement of mechanical properties is achieved with Ti addition and the increasing rolling reduction, which can be ascribed to multiple mechanisms. In addition, Ti has a negative effect on the electrical conductivity, while deformation has a slight effect on conductivity.