多晶凝固及后续调幅分解过程的晶体相场法模拟  

Simulation of multi-grain solidification and subsequent spinodal decomposition by using phase field crystal model

作　　者：张琪[1] 王锦程[1] 张亚丛[1] 杨根仓[1] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,西安710072

出　　处：《物理学报》2011年第8期730-736,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:51071128);凝固技术国家重点实验室基金(批准号:17-TZ-2007;03-TP-2008;24-TZ-2009)资助的课题~~

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.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.

关 键 词：晶体相场模型 多晶凝固 调幅分解 组织演化 

分 类 号：O73[理学—晶体学]