Quantitative phase-field modeling for two-phase solidification process involving diffusion in the solid
Quantitative phase-field modeling for two-phase solidification process involving diffusion in the solid
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DOI：
10.1016/j.actamat.2010.06.050
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发表时间：
2010-10
期刊：
影响因子：
9.4
通讯作者：
M. Ohno;K. Matsuura
中科院分区：
文献类型：
--
作者：
M. Ohno;K. Matsuura
基于反捕获电流方法，建立了两相凝固过程的相场定量模型，建立了抑制界面额外相形成的自由能泛函。该模型较好地恢复了界面在薄界面上运动的自由边界问题，更重要的是，它适用于具有任意固相扩散系数和界面能的二元合金体系的凝固过程。以碳钢包晶反应过程为例，研究了该模型的性能。该模型对界面厚度表现出了良好的收敛行为。
A quantitative phase-field model for two-phase solidification processes is developed based on the anti-trapping current approach with the free energy functional formulated to suppress the formation of an extra phase at the interface. This model appropriately recovers the free boundary problem for the motion of interface in the thin-interface limit and, importantly, it is applicable to the solidification process in binary alloy systems with arbitrary values of the solid diffusivities and interfacial energies. The performance of the present model is investigated for the peritectic reaction process in carbon steel. The present model exhibits excellent convergence behavior with respect to the interface thickness.