A microstructural model of competitive growth in nickel based superalloys

被引：0
|
作者：
Wang, W [1 ]
Kermanpur, A
Lee, PD
McLean, M
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2BP, England
[2] Isfahan Univ Technol, Dept Mat Engn, Esfahan 84154, Iran
来源：
INTERNATIONAL JOURNAL OF CAST METALS RESEARCH | 2002年 / 15卷 / 03期
关键词：
cellular automaton; modified decentred square method; competitive grain growth;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A microscale cellular automaton-finite difference model was developed to simulate the solidification process of binary alloys. The velocity of the solid/liquid interface is determined by solute diffusion and local equilibrium at the dendrite tip. The crystallographic orientation of grains is simulated using a modified implementation of the decentred square growth technique first developed by Gandin & Rappaz.(1) The relationship between the tip undercooling of columnar dendrites and the misorientation was obtained. The model was applied to simulate converging and diverging competitive grain growth, with good agreement to experimental results.
引用
收藏
页码：269 / 271
页数：3
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