电焊机2017，Vol.47Issue(12)：99-103,5.DOI:10.7512/j.issn.1001-2303.2017.12.22
SUS301L不锈钢冷金属过渡焊接接头焊接工艺、微观组织及力学性能
Welding technology, microstructure and mechanical properties of lap joint in SUS301L stainless steel by cold metal transfer welding
汪认 1马明菊 1陈卫林 2戴为 2张航2
作者信息
- 1. 中车青岛四方机车车辆股份有限公司,山东青岛266111
- 2. 西南交通大学材料科学与工程学院,四川成都610031
- 折叠
摘要
Abstract
With the rapid development of the rail transportation industry in our country,the weight reduction of the train body has great significance for energy saving.The 4-0.8 mm lap joints of SUS301L-MT stainless steel are studied by using CMT welding technology,and the optimal welding parameters are obtained;The macroscopic morphology and microstructure observation,mechanical properties and deformation measurement of welded joints are carried out.The results show that under the optimal parameters,the appearance of weld forms well without obvious defects.The microstructure of the weld zone is mainly austenite columnar crystal and dendritic crystal ferrite.Besides,the maximum tensile-shear of welded joints reach 22 234.42 N,and the minimum value of hardness test appears in the weld zone.After welding,the test plate shows wave deformation and the maximum Z direction deformation occurs at the edge of the test plate.关键词
SUS301L-MT不锈钢/CMT冷金属过渡/微观组织/力学性能/变形测量Key words
SUS301L-MT stainless steel/CMT cold metal transfer/microstructure/mechanical properties/deformation measurement分类
矿业与冶金引用本文复制引用
汪认,马明菊,陈卫林,戴为,张航..SUS301L不锈钢冷金属过渡焊接接头焊接工艺、微观组织及力学性能[J].电焊机,2017,47(12):99-103,5.
