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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 材料成型及控制工程专业负责人
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：铸造中心403
联系方式：0411-84706169
电子邮箱：caozq@dlut.edu.cn
Evolution of dendrite morphology of a binary alloy under an applied electric current: An in situ observation
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论文类型：期刊论文
发表时间：2010-04-01
发表刊物：PHYSICAL REVIEW E
收录刊物：SCIE、EI、PubMed、Scopus
卷号：81
期号：4
页面范围：042601
ISSN号：1539-3755
摘要：Synchrotron radiation imaging technique was used to in situ observe the dendrite growth of a solidifying Sn-Bi binary alloy under a direct current (dc) electric field. By applying a dc (7-32 A/cm(2)), the dendrite branching was suppressed, the dendrite tip was modified to be round or flat, and no tertiary dendrite was found. With increasing dc density, the dendrite morphology was changed from columnar dendritic to equiaxed cellular to equiaxed dendritic. In particular, the primary dendrite branched following a tip-split manner in a higher intensity dc. The influence of dc on the evolution of dendrite morphology was discussed.