Numerical Simulation of Multi-Grain Structure and Prediction of Microsegregation in Binary Alloy under Isothermal Condition

摘要：

The multi-grain structure and microsegregation during solidification of Ni-Cu binary alloy under isothermal condition are simulated and predicted with phase-field method. Two concentrations are selected as the computational initial conditions. The computed results indicate that the supersaturation plays a very important role on microsegregation. The comparison shows that the larger the supersaturation is, the higher the degree of microsegregation is. Furthermore, the larger the supersaturation is, the coarser the dendrite structure is and the higher the velocity of dendritic growth is. The dynamic reasons of this are also analyzed and discussed.

关键词： numerical simulation microstructure microsegregation phase-field

作者: Jinjun TANG Xiang XUE

作者单位: School of Materials Science and Engineering Harbin Institute of Technology, Harbin 150001, China

会议类型: 国际会议

会议名称: The Fifth International Conference on Physical and Numerical Simulation of Materials Processing(第五届材料与热加工物理模拟及数值模拟国际会议)

会议地点: 郑州

会议语种:英文

在线出版日期: 2007-10-23（万方平台首次上网日期，不代表论文的发表时间）