Numerical Simulation of Solidification Microstructure and Effects of Phase-field Parameters on Grain Growth Morphologies

作     者：Jingfeng LIU+, Ruixiang LIU and Liliang CHEN Research Studio of Solidification Simulation, College of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China 

作者机构：Research Studio of Solidification Simulation College of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2005年第21卷第6期

页      面：921-924页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：This work was supported by the National Natural Science Foundation of China(GranL No.10176009) 

主　　题：Phase-field model Dendritic pattern Simulation 

摘      要：By a simple phase field model, a series of numerical simulations of solidification microstructure was performed to show a rich variety of dendritic patterns. At the same time, the relation between the morphology of grain growth and some parameters including the strength of anisotropy, dimensionless latent heat and the size of initial solid zone was studied. It is for the first time that patterns of grain growth were associated with the size of initial solid zone, which is an interesting issue. The possible reason for this may be that variation in the size of initial solid zone may bring about fluctuation of the interface energy, making the interface unstable.