Impact on Solidification Dendrite Growth by Interfacial Atomic Motion Time with Phase-Field Method

摘要：

　　The Phase-Field model of solidification processes was carried out coupled with temperature field model.The influence of interface atomic time on dendrite growth morphology in undercooled melt was simulated with pure nickel.The experimental results show that when the interface atomic motion time parameter τ 0 is minor,the liquid-solid interfaces were unstable,disturbance can be amplified easily so the complicated side branches will grow,and the disturbance speed up the dendrite growth.With the increase of τ 0,the liquid-solid interfaces become more stable and finally the smooth dendrite morphology can be obtained.

关键词： Interface atoms Undercooled melts Dendrite growth in two-dimension/three-dimension Phase-Field Method

作者: Yuhong Zhao Weijin Liu Hua Hou Yuhui Zhao

作者单位: College of Materials Science and Engineering, North University of China, Taiyuan, 030051, China Department of Mechanical and Electronic Engineering, Hebei College of Industry and Technology,Shijia

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 660-667

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）