金属增材制造中微观组织相场法模拟研究进展  

Current Research Status of Phase Field Simulation for Microstructures of Additively Manufactured Metals

作　　者：耿汝伟 杜军 魏正英[1] 魏培[1] GENG Ruwei;DU Jun;WEI Zhengying;WEI Pei(State Key Laboratory for Manufacturing Systems Engineering,Xi’an Jiaotong University,Xi’an 710049;Collaborative Innovation Center of High-End Manufacturing Equipment,Xi’an 710054)

机构地区：[1]西安交通大学机械制造系统工程国家重点实验室,西安710049 [2]高端制造装备协同创新中心,西安710054

出　　处：《材料导报》2018年第7期1145-1150,1180,共7页Materials Reports

基　　金：国家重点研发计划专项项目(2016YFB1100400);装备预研教育部联合基金(6141A02022109);高校基本科研业务费专项资金

摘　　要：金属增材制造技术是近30年发展起来的一项具有战略意义的先进制造技术。目前对增材制造的研究主要集中在制造装备与控制系统研发、产品性能测试等方面,对构件内微观组织的形成以及宏微观结构性能的关系研究较少。本文简要介绍了金属增材制造发展现状以及在微观组织演化方面研究的不足,揭示了微观组织演化研究的重要性和迫切性。针对相场法的基本原理和优势,着重分析相场法应用于金属增材制造中的模型选取、非材料物性参数的确定等问题及解决方法,从相场数值模拟的角度来探讨工艺参数对微观组织的影响。文章最后指出利用相场法模拟金属增材制造过程中微观组织演化符合未来的发展趋势。Metal additive manufacturing is a strategic and innovative material forming technology that has been developed in nearly three decades.Current research for metal additive manufacturing mainly focuses on the equipment and control system R&D,product(component)testing,etc.,but few works touch the issues of microstructure evolution and microstructure-mechanical pro-perty relationship.The development status of metal additive manufacturing and research inadequacy for the produced metal components’microstructures are summarized in this paper,illustrating the necessity and urgency of microstructure evolution investigation.Based on an introduction of the fundamental principles and advantages of phase field simulation,the unresolved issues and tentative solutions for the model selection,parameters determination,etc.,are described emphatically.The influences of process parameters on product(component)microstructure are discussed from the perspective of phase field numerical simulation.Finally,the paper displays the future development trend of exploring the metals’microstructure evolutions during additive manufacturing process by using phase field simulation.

关 键 词：金属增材制造 微观组织演化 相场法 数值模拟 

分 类 号：TG111[金属学及工艺—物理冶金]