Simulation of Magnesium Alloy AZ91D Microstructure Using Modified Cellular Automaton Method

被引：5
|
作者：
霍亮 [1 ]
李斌 [1 ]
石玉峰 [1 ]
许庆彦 [1 ]
韩志强 [1 ]
柳百成 [1 ]
机构：
[1] Key Laboratory for Advanced Materials Processing Technology of the Ministry of Education, Department of Mechanical Engineering,Tsinghua University, Beijing 100084, China
来源：
Tsinghua Science and Technology | 2009年 / 14卷 / 03期
关键词：
magnesium alloy; AZ91D; microstructure; numerical simulation; cellular automaton method;
D O I：
暂无
中图分类号：
TG146.22 [];
学科分类号：
080502 ;
摘要：
A two-dimensional modified cellular automaton model was developed to simulate the solidification process of magnesium alloy. The stochastic nucleation, solute redistribution, and growth anisotropy effects were taken into account in the present model. The model was used to simulate the grain size of magnesium alloy AZ91D for various cooling rates during the solidification process. To quantitatively validate the current model, metallographic experiments were carried out on specimens obtained from sand mold AZ91D step castings. The metallographic results agree well with the prediction results. The current model can be used to accurately predict the grain sizes of cast AZ91D magnesium alloy.
引用
收藏
页码：307 / 312
页数：6
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