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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：材料科学与工程学院副院长
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
办公地点：铸造中心208
联系方式：0411-84707970
电子邮箱：gqchen@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.