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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 Coarsening of Second-Phase Droplets in Al-Bi Immiscible Alloy Using Synchrotron Radiation X-ray Imaging Technology
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论文类型：期刊论文
发表时间：2015-07-01
发表刊物：ACTA METALLURGICA SINICA-ENGLISH LETTERS
收录刊物：SCIE、EI、Scopus
卷号：28
期号：7
页面范围：940-945
ISSN号：1006-7191
关键字：Al alloys; Coarsening; Secondary phase; Droplet particles
摘要：The coarsening process of second-phase droplet in solidifying A1-20 wt% Bi immiscible alloy is in situ studied using synchrotron radiation imaging technology. The collision-induced coarsening and Ostwald coarsening phenomena are directly observed and analyzed. It is found that through observation, collision-induced coarsening phenomenon occurs between droplets with little difference in radius, while Ostwald coarsening phenomenon occurs among droplets with much difference in radius. Moreover, the coarsening rate of Ostwald coarsening is much higher than that of collision-induced coarsening.