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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：大连理工大学
学位：博士
所在单位：机械工程学院
学科：工程力学. 固体力学. 航空航天力学与工程. 应用与实验力学. 机械制造及其自动化. 机械设计及理论. 车辆工程. 工业工程
电子邮箱：renmf@dlut.edu.cn
Strain rate dependent behaviors of a hot isotropically processed Ti-6Al-4V: Mechanisms and material model
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论文类型：期刊论文
发表时间：2016-02-01
发表刊物：JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
收录刊物：SCIE、EI
卷号：30
期号：2
页面范围：661-665
ISSN号：1738-494X
关键字：Hot isotropically processed; Casting titanium alloy (Ti-6Al-4V); Dynamic response; Split-Hopkinson pressure bar; Johnson-Cook model
摘要：Split-Hopkinson pressure bar (SHPB) was adopted to study the dynamic response of a specifically designed Hot isotropically processed (HIP) Casting Titanium alloy (Ti-6Al-4V). The strain-stress curves were obtained in a range of strain rate (10(-3)similar to 2.6x10(3)/s) to study the constitutive relationships and the Johnson-Cook model is developed to describe this dynamic constitutive law. It can be found that the static microstructure of this specific HIP casting Ti-6Al-4V is lamellar structure. When the loading increases (strain rate higher than 10(3)/s), this lamellar structure changes to basket weave structure, which further changes the mechanical strength and plasticity.