摘要
综述了镍基高温合金选区激光熔化技术(Selective Laser Melting,SLM)的研究进展。通过阐述IN718沉积态典型凝固组织及性能的变化规律,发现IN718合金工艺参数不匹配引起的微观缺陷难以消除,并在增材制造过程中存在裂纹的问题;结合激光增材制造过程中工艺参数对沉积态组织的影响、热处理后组织的变化及其对力学性能的影响等方面的研究,对镍基高温合金选区激光熔化技术予以展望,为镍基高温合金选区激光熔化技术的发展提供参考。
His paper summarizes the research progress of selective laser melting(SLM)technology of nickel base superalloy,mainly expounds the changes of typical solidification microstructure and properties in the deposited state,the influence of process parameters on the results of additive manufacturing process of laser,the change of microstructure after heat treatment and its influence on mechanical properties,and summarizes the existing researches that it is difficult to reduce residual stress,control anisotropy.The research on selective laser melting of nickel base superalloys is prospected,which provides a useful reference for the development of selective laser melting technology of nickel base superalloys.
作者
刘泊良
马志毅
赵军
史昆
徐凯
刘时兵
刘田雨
岳野
程姣姣
LIU Bo-liang;MA Zhi-yi;ZHAO Jun;SHI Kun;XU Kai;LIU Shi-bing;LIU Tian-yu;YUE Ye;CHENG Jiao-jiao(National Key Laboratory of Advanced Casting Technologies,Shenyang Research Institute of Foundry Co.,Ltd.,CAM,Shenyang 110o22,Liaoning,China;Military Representative Office of the Air Force Equipment Department in Liaoyang,Liaoyang 110034,Liaoning,China)
出处
《铸造》
CAS
北大核心
2023年第5期485-495,共11页
Foundry
关键词
镍基高温合金
选区激光熔化
工艺参数
热处理
nickel base superalloy
selective laser melting
process parameters
heat treatment
