Microstructure and properties of hybrid additive manufacturing 316L component by directed energy deposition and laser remelting
作者机构：National Engineering Laboratory of Additive Manufacturing for Large MetallicComponents and Engineering Research CenterMinistry of Education on Laser Direct Manufacturing for Large Metallic ComponentsSchool of Materials Science and EngineeringBeihang UniversityBeijing 100191China Research Center for ProcessingAECC Shanghai Commercial Aircraft Engine Manufacturing Co.Ltd.Shanghai 201306China
出 版 物：《Journal of Iron and Steel Research International》 (J. Iron Steel Res. Int.)
年 卷 期：2020年第27卷第7期
页 面：842-848页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：This work was supported by Beijing Municipal Science&Technology Program(Grant No.Z181100003318001)
主 题：Hybrid additive manufacturing Laser remelting Directed energy deposition Microstructure Corrosion resistance
摘 要：Arc additive manufacturing is a high-productivity and low-cost technology for directly fabricating fully dense metallic ***,this technology with high deposit rate would cause degradation of dimensional accuracy and surface quality of the metallic component.A novel hybrid additive manufacturing technology by combining the benefit of directed energy deposition and laser remelting is *** hybrid technology is successfully utilized to fabricate 316L component with excellent surface *** show that laser remelting can largely increase the amount ofδphases and eliminateσphases in additive manufacturing 316L component surface due to the rapid *** leads to the formation of remelting layer with higher microhardness and excellent corrosion resistance when compared to the steel made by directed energy deposition *** laser remelting power can improve surface quality as well as corrosion resistance,but degrade microhardness of remelting layer owing to the decrease inδphases.
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