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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 imaging of the grain refinement process of aluminum alloys inoculated by Al-5Ti-B under synchrotron radiation x-ray
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论文类型：会议论文
发表时间：2013-08-04
收录刊物：EI、Scopus
卷号：3
页面范围：2599-2605
摘要：It has been through 60 years ever since the eminent grain refining performance of Al-5Ti-B for aluminum alloys was found. Owing to the high temperature and distransparency of aluminum alloys during solidification, however, no direct study of the growth kinetics regarding the solidification process of inoculated aluminum alloys has been reported. This work was undertaken to study the effect of Al-5Ti-B addition on the dendrite growth of Al-Cu alloy. The third generation synchrotron radiation source at Shanghai Synchrotron Radiation Facility (SSRF) was utilized for real-time imaging. The results have demonstrated that nucleation ceases after recalescence. Under the same cooling condition, the growth rate of dendrite was deceased markedly when Al-5Ti-B was added into the Al-Cu alloy. Without Al-5Ti-B addition, the growth rate of -Al dendrite first increases and then decreases, reaching a maximum of 50 m/s, whilst with Al-5Ti-B addition, this rate remains almost a same value of some 0.8 m/s.