Numerical simulation of microstructure formation of AZ91 using mCA method 被引量：1

Numerical simulation of microstructure formation of AZ91 using mCA method

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摘要 A stochastic model for simulating the microstructure formation of Mg alloy AZ91 during solidification was developed based on the finite element method(FEM) for macroscopic model of heat transfer calculation and a modified Cellular Automaton (mCA) for microscopic modeling of nucleation, growth of crystal. In this model, the effect of solute redistribution, interface curvature and preferred orientation was considered. A numerical simulation was developed with C++ program language. The computation was carried out to understand the effect of varying processing parameters, such as nucleation parameters and heat transfer coefficient, on the microstructure formation of AZ91. The result of simulation was displayed on screen. A stochastic model for simulating the microstructure formation of Mg alloy AZ91 during solidification was developed based on the finite element method（FEM） for macroscopic model of heat transfer calculation and a modified Cellular Automaton （mCA） for microscopic modeling of nucleation, growth of crystal. In this model, the effect of solute redistribution, interface curvature and preferred orientation was considered. A numerical simulation was developed with C＋＋ program language. The computation was carded out to understand the effect of varying processing parameters, such as nucleation parameters and heat transfer coefficient, on the microstructure formation of AZ91. The result of simulation was displayed on screen.

作者何柏林黎秋萍齐清岩姚向东

机构地区 School of Mechanical and Electrical Engineering School of Engineering

出处《中国有色金属学会会刊：英文版》 CSCD 2006年第A03期1681-1684,共4页 Transactions of Nonferrous Metals Society of China

基金 Project(2005-15) supported by the Foundation of East China Jiaotong University

关键词镁合金有限元分析数值模拟微观结构金属变形 AZ91 FEM cellular automaton stochastic model nucleation grain growth

分类号 TG27 [金属学及工艺—铸造]

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