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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：Professor in Process Mechanics
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：力学与航空航天学院
学科：制造工艺力学. 工程力学. 计算力学
办公地点：综合实验1号楼619
联系方式：0411-84708432
电子邮箱：zhangz@dlut.edu.cn
Numerical studies of tool diameter on strain rates, temperature rises and grain sizes in friction stir welding
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论文类型：期刊论文
发表时间：2015-10-01
发表刊物：JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
收录刊物：SCIE、EI、Scopus
卷号：29
期号：10
页面范围：4121-4128
ISSN号：1738-494X
关键字：Friction stir welding; Fully coupled thermo-mechanical model; Zener-Hollomon parameter; Grain size
摘要：Fully coupled thermo-mechanical model is used to obtain the true strain components. The sizes of the TMAZ and the SZ are predicted according to the different behaviors of the traced material particles. The strain rate and the temperature histories are used to calculate the Zener-Hollomon parameter and then the grain size in the SZ. Results indicate that the contribution from the temperatures is much more important than the one from the deformations. The strain rates at the advancing side are higher than the ones at the retreating side on the top surface but become symmetrical on the bottom surface. The widths of the TMAZ and the SZ become narrower in smaller shoulder diameter. Smaller shoulder can lead to smaller grain size in the SZ.