|
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：埼玉大学
学位：博士
所在单位：材料科学与工程学院
学科：材料学. 材料加工工程
办公地点：材料馆304室
联系方式：辽宁省大连市甘井子区凌工路2号 大连理工大学 材料科学与工程学院 116024 办公电话0411-84708189 手机13149898722
电子邮箱：minxiaohua@dlut.edu.cn
Effect of high-pressure torsion process on precipitation behavior of alpha phase in beta type Ti-15Mo allo
点击次数：
论文类型：期刊论文
发表时间：2014-01-01
发表刊物：Mater Trans
收录刊物：EI
卷号：66
期号：6
页面范围：877-884
摘要：Precipitation behavior of α phase in Ti-15Mo alloy during isothermal aging after straining by high-pressure torsion (HPT) was investigated and compared with that without HPT process. Upon isothermal aging, ultrafine equiaxed α phase particles and acicular α phase plates were obtained in HPT-processed samples, while only the coarse acicular α phase plates were obtained in the samples without HPT process. The precipitation of equiaxed α phase occurred faster than the precipitation of acicular α phase in HPT-processed samples. It seemed that a high density of dislocations resulted in highly strained area and enhanced atomic diffusivity, promoting the formation of equiaxed α phase. The HPTprocessed samples exhibited higher hardness and ultimate tensile strength but lower ductility than those of the specimens without HPT process. © 2014 The Japan Institute of Metals and Materials.