用相场方法模拟纯物质等轴枝晶生长

1.中国科学院金属研究所,沈阳,110015

2.中国科学院金属研究所,沈阳,110015

3.中国科学院金属研究所,沈阳,110015

4.东北大学材料与冶金学院,沈阳,110006

5.东北大学材料与冶金学院,沈阳,110006

基金项目: 国家重点基础研究发展计划(973计划)(G1998061512)

SIMULATION OF EQUIAXED DENDRITIC GROWTH OF A PURE MATERIAL USING PHASE FIELD METHOD

采用相场模型模拟了纯物质凝固过程的等轴枝晶演化,并针对各向异性模数为4的金属镍进行了二维数值模拟,计算了正方形区域过冷熔液中的等轴枝晶生长.在相场方程中采用均匀网格的一般显示有限差分方法求解,通过数值计算显示了等轴枝晶的形态.

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