相场法模拟增材制造及焊接过程中显微组织的研究进展  

Research Progress on Microstructure Simulation by Phase Field Method inAdditive Manufacturing and Welding Process

作　　者：王丽芳 谢光耀 朱刚贤[2] WANG Lifang;XIE Guangyao;ZHU Gangxian(Engineering Training Center,Soochow University,Suzhou 215137,China;School of Mechanical and Electric Engineering,Soochow University,Suzhou 215137,China)

机构地区：[1]苏州大学工程训练中心,苏州215137 [2]苏州大学机电工程学院,苏州215137

出　　处：《机械工程材料》2023年第11期81-86,95,共7页Materials For Mechanical Engineering

基　　金：苏州市科技计划项目(SYC2022143);国家重点研发计划项目(2016YFB1100300)。

摘　　要：增材制造以及焊接过程都是多物理场耦合的复杂过程,难以采用试验方法直接观测熔池显微组织的演变过程。随着计算材料学和数值模型的快速发展,从数值模拟出发研究凝固过程中的显微组织演变成为可能。对比分析了几类常用的显微组织模拟方法,其中相场法在晶粒形貌模拟准确性上具有独特的优势。综述了相场法在增材制造及焊接领域模拟显微组织的应用现状,并对未来的研究方向进行了展望。The processes of additive manufacturing and welding are both complex processes with multiple physical field coupling,and it is difficult to directly observe the evolution of the microstructure of the molten pool by experimental methods.With the rapid development of computational material science and numerical models,it is possible to study the microstructure evolution during solidification by numerical simulation.Several commonly used microstructure simulation methods are compared and analyzed,among which the phase field method has a unique advantage in the accuracy of grain morphology simulation.The application status of phase field method in the microstructure simulation in additive manufacturing and welding fields is reviewed,and the research direction in future is prospected.

关 键 词：增材制造 焊接 相场法 显微组织 

分 类 号：TG111.5[金属学及工艺—物理冶金]