激光选区熔化成形Inconel 718合金的热处理研究现状  

Research Status of Heat Treatment of Laser Selective Melting Inconel 718 Alloy

作　　者：戴海辉 卢林[2] 王涛 DAI Haihui;LU Lin;WANG Tao(School of Resources and Environmental Engineering,Shanghai Second University of Technology,Shanghai 201209,China;Shanghai 3D Printing Materials Engineering Technology Research Center,Shanghai Institute of Materials Research,Shanghai 200437,China)

机构地区：[1]上海第二工业大学资源与环境工程学院,上海201209 [2]上海材料研究所上海3D打印材料工程技术研究中心,上海200437

出　　处：《热加工工艺》2024年第20期18-24,共7页Hot Working Technology

基　　金：上海市青年科技启明星计划资助项目(20QB1401100)。

摘　　要：论述了激光选区熔化(SLM)成形Inconel 718合金的成形原理,介绍了SLM成形Inconel 718合金的残余应力、Nb元素偏析等常见缺陷的形成机理,及热等静压、热处理等工艺对其控制的研究现状。重点归纳了固溶+双时效、均匀化+固溶+双时效的热处理工艺对SLM成形Inconel 718合金的缺陷、组织、力学性能、耐腐蚀性能的影响,并对SLM成形Inconel 718合金的热处理工艺、热处理工艺参数、耐腐蚀性等方面的研究进行了展望。The forming principle of Inconel 718 alloy formed by selective laser melting(SLM)was briefly described,and the forming mechanism of common defects such as residual stress,Nb element segregation of SLM formed Inconel 718 alloy and the research status of hot isostatic pressing,heat treatment for its control were introduced.The influence of the heat treatment process of solid solution+double aging,homogenization+solid solution+double aging on the defects,microstructure,mechanical properties and corrosion resistance of SLM formed Inconel 718 alloy were summarized.The study of heat treatment process,heat treatment process parameters and corrosion resistance of Inconel 718 alloy formed by SLM was prospected.

关 键 词：激光选区熔化 Inconel 718合金 热处理 

分 类 号：TG166.7[金属学及工艺—热处理]