采用KKSM多相场模型, 研究了低速下定向凝固CBr4-C2Cl6薄试样的层片共晶界面失稳及形貌选择. 多相场模拟结果真实再现了3种共晶层片界面失稳模式及其形貌选择的演化过程, 随着初始层片间距的不断增加, 其形貌选择变化依次为：层片湮没→稳态生长→1λO不稳定性→2λO 不稳定性→层片分叉与形核.模拟结果不仅与理论计算的形貌选择图相符, 而且与实验结果定性一致.
The KKSM multi-phase field model is employed to simulate the eutectic growth in thin-film unidirectional solidification of CBr4-C2Cl6 eutectic alloy at low velocity. Three interface destabilization modes of eutectic lamellae, lamella annihilation, oscillatory instability and lamella nucleation, and the morphology selection of eutectic lamellae have reappeared veritably. With increasing of the initial lamella spacing, the stable morphology of the CBr4-C2Cl6 eutectic alloy evolved in the sequence of lamella annihilation→stable growth→1λO instability→2λO instability→lamella nucleation. The simulation results are in agreement not only with Karma et al's calculated results but also with Ginibre et al's experimental results qualitatively.
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