|
个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：研究生院常务副院长
其他任职：辽宁省凝固控制与数字化制备技术重点实验室主任
性别：男
毕业院校：大连理工大学
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：研究生院；材料科学与工程学院
联系方式：tmwang@dlut.edu.cn
电子邮箱：tmwang@dlut.edu.cn
In situ study on the evolution of dendrite morphology affected by electric field in Sn-Bi alloy
点击次数：
论文类型：会议论文
发表时间：2015-03-15
收录刊物：EI、Scopus
卷号：2015-March
页面范围：209-214
摘要：With high energy, high brilliance and eminent collimation, synchrotron X-ray imaging enables in situ observation of dendrite growth during the solidification of Sn-Bi alloy under an applied electric field such as direct current (DC) and electric current pulse (ECP). In present study, the application of DC leads to the suppression of dendrite growth and the degeneration of the secondary and higher order dendrites. Due to the induced Joule heat, the sharp dendrite tips are modified to be round or flat. By applying ECP to the sample during the whole solidification process, a significant grain refinement is observed.