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国家重点基础研究发展计划(2011ZX04001-071)

作品数:2 被引量:11H指数:2
相关作者:熊守美吴孟武更多>>
相关机构:清华大学更多>>
发文基金:国家重点基础研究发展计划更多>>
相关领域:金属学及工艺交通运输工程一般工业技术更多>>

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Modeling of equiaxed and columnar dendritic growth of magnesium alloy被引量:6
2012年
Based on the cellular automaton (CA) method, a numerical model was developed to simulate the dendritic growth of magnesium alloy with HCP crystal structure. The growth kinetics was calculated from the complete solution of the transport equations. By defining a special neighborhood configuration with the square CA cell, and using a set of capturing rules which were proposed by BELTRAN-SANCHEZ and STEFANESCU for the dendritic growth of cubic crystal metals during solidification, modeling of dendritic growth of magnesium alloy with different growth orientations was achieved. Simulation of equiaxed dendritic growth and columnar dendritic growth under directional solidification was carried out, and validation was performed by comparing the simulated results with the experimental results and those in the previously published works.
吴孟武熊守美
A three-dimensional cellular automaton model for simulation of dendritic growth of magnesium alloy被引量:7
2012年
A numerical model based on the cellular automaton method for the three-dimensional simulation of dendritic growth of magnesium alloy was developed. The growth ki- netics was calculated from the complete solution of the transport equations. By con- structing a three-dimensional anisotropy model with the cubic CA cells, simulation of dendritic growth of magnesium alloy with six-fold symmetry in the basal plane was achieved. The model was applied to simulate the equiaxed dendritic growth and columnar dendritic growth under directional solidification, and its capability was addressed by comparing the simulated results to experimental results and those in the previously published works. Meanwhile, the three-dimensional simulated results were also compared with that of in two dimensions, offering a deep insight into the microstructure formation of magnesium alloy during solidification.
Mengwu WUShoumei XIONG
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