文章编号:1004-0609(2001)S2-0037-05
液态金属快速凝固过程的PFM模型
(昆明理工大学 材料与冶金学院, 昆明 650093)
摘 要: 近年来发展起来的PFM模型根据“溶质捕捉”和“溶质牵引”两种机制对金属及合金快速凝固过程进行数学描述及模拟,较好地反映了金属凝固的物理本质。介绍了PFM模型发展过程、研究现状及理论模型,并对发展前景进行了展望。
关键字: 相区场模型;溶质捕捉; 合金凝固; 枝晶生长
Phase-field model of rapid solidification process
of liquid alloy
of liquid alloy
(School of Material and Metallurgy, Kunming University of
Science and Technology, Kunming 650093, P.R.China)
Abstract:In recent years, phase-field model(PFM) of alloy solidification based on solute trapping and solute drag was introduced as a powerful tool to simulate the process of solidification. An overview introduction about its development was given and an emphasis on its theoretical frame was put.
Key words: phase-field model; solute trapping; alloy solidification; dendritic growth