Simulation of Magnesium Alloy AZ91D Microstructure Using Modified Cellular Automaton Method

Simulation of Magnesium Alloy AZ91D

Microstructure Using Modified Cellular Automaton

Method

HUO Liang; LI Bin; SHI Yufeng; XU Qingyan; HAN Zhiqiang; LIU Baicheng

【期刊名称】《《清华大学学报（英文版）》》 【年(卷),期】2009(014)003

【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 expedments were carded 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. 【总页数】6页(307-312) 【关键词】

【作者】HUO Liang; LI Bin; SHI Yufeng; XU Qingyan; HAN Zhiqiang; LIU Baicheng

【作者单位】Key Laboratory for Advanced Materials Processing