中文摘要：

采用晶体相场模型,模拟了二元合金多晶凝固及后续调幅分解全过程.结果表明,晶体相场模型可完整再现包括形核、生长、粗化、晶界形成等多晶生长过程以及圆满完成从凝固到调幅分解的多相变过程.

英文摘要：

The phase field crystal model （PFCM） is employed to simulate the process of multi-grain solidification and its subsequent spinodal decomposition in a binary alloy system.Simulation results show that the PFCM can reproduce the whole process of the important material processing phenomena of multi-grain solidification,including nucleation,growth,coarsening and grain boundary formation.Furthermore,the PFCM can also successfully simulate the full course of the multi phase transformation process from solidification to spinodal decomposition.