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金属学报  2004 

枝晶凝固过程中的溶质浓度分布模拟

, PP. 1215-1220

Keywords: 枝晶形貌,显微偏析,模拟

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Abstract:

采用元胞自动机方法(cellularautomation)对单个枝晶凝固过程中的显微偏析和枝晶形貌进行了模拟.在模拟的过程中,对固相和液相中的溶质传输分别进行了计算,同时考虑到凝固过程中固相分数的变化对溶质传输的影响.与文献中通常采用的浓度势方法的计算结果进行对比,模拟结果显示本文使用的计算方法模拟显微偏析过程中波动小、结果更为稳定.

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