ER308L不锈钢丝材微束等离子弧增材制造组织与性能分析  

Microstructure and mechanical properties of mateirals fabricated by micro-plasma arc additive manufacturing from ER308L wire

作　　者：任香会 张文杰 易耀勇 高世一 刘丹 REN Xiang-hui;ZHANG Wen-jie;YI Yao-yong;GAO Shi-yi;LIU Dan(Technical Equipment R&D Center,Guangdong Welding Institute(China-Ukraine E.O.Paton Institute of Welding)Guangzhou 510650,China;College of Materials Science and Engineering,Shenyang University of Technology,Shenyang 410083,China)

机构地区：[1]广东省焊接技术研究所(广东省中乌研究院)技术装备研发中心,广州510650 [2]沈阳工业大学材料科学与工程学院,沈阳410083

出　　处：《沈阳航空航天大学学报》2019年第6期27-32,共6页Journal of Shenyang Aerospace University

基　　金：广东省科学院建设国内一流研究机构行动专项资金项目(项目编号:2019GDASYL-0302013);广东省科学院院属骨干科研机构创新能力建设专项项目(项目编号:2017GDASCX-0113);广州市科技计划项目(项目编号:201704030068);广州市科技计划项目(项目编号:201907010006);广东省科技计划项目(项目编号:2018A050506060);广东省工业技术研究院(广州有色金属研究院)创新能力建设(项目编号:2014B070705007);广省省級科技计划项目(项目编号:2017A070701026)

摘　　要：微束等离子弧增材制造具有成型效率高、成型精度好的优点,采用微束等离子弧为热源,以ER308L不锈钢丝材为试验材料,采用不同的熔敷路径,进行微束等离子弧增材制造成形,分析了成形件的结构与组织性能,采用“Z”字熔敷路径成形比采用单向熔敷路径的试样成型更好;通过性能测试和组织对比分析得出,采用“Z”字熔敷路径成形和单向熔敷路径成形时,试样组织均为奥氏体和铁素体,而“Z”字熔敷路径成形试样组织有明显交错;“Z”字熔敷路径成形时抗拉强度、硬度、延伸率均高于单向熔敷路径成形的试样。Micro-plasma arc additive manufacturing has the mirits of high forming accuracy and efficiency.In this research micro-plasma arc additive manufacture was perform using ER308L wire through different forming paths.Microstructure and mechanical properties of the obtained components were investigated.The results show that the components quality of the Z-type forming path is better than the unidirectional ones.The former has higher tensile strength,hardness value and percentage of elongation because of a crossed microstructure and both components composed of austenite and ferrite.

关 键 词：ER308L不锈钢 微束等离子弧 增材制造 熔敷路径 成型精度 性能分析 

分 类 号：TG455[金属学及工艺—焊接]