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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：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
Real-Time Observation on Evolution of Droplets Morphology Affected by Electric Current Pulse in Al-Bi Immiscible Alloy
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论文类型：期刊论文
发表时间：2013-05-01
发表刊物：JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
收录刊物：SCIE、EI
卷号：22
期号：5
页面范围：1319-1323
ISSN号：1059-9495
关键字：Al-based immiscible alloys; electric current pulse; Marangoni; monotectic; synchrotron radiation
摘要：The evolution of Bi-rich droplets morphology in a solidifying Al-Bi immiscible alloy was directly observed using a synchrotron microradiography technique. The electric current pulse (ECP) was applied to control the solidification process of Al-Bi immiscible alloy. It was found that the electromagnetic pinch force and Marangoni force induced by ECP and temperature gradient, respectively, can significantly affect the distribution of Bi-rich droplets. The electromagnetic pinch force drove the droplets from the center to side; meanwhile, the Marangoni force lifted the droplets from the bottom to the top. As a result, the droplets finally distributed with a manner of "inverted triangle.".