MH600DP与MH540FB双相钢MAG焊焊接性研究  

Research on the weldability of MH600DP and MH540FB dual phase steel by MAG welding

作　　者：吴兴欢[1] 赖春明 彭思涵 WU Xinghuan;LAI Chunming;PENG Sihan(School of Mechanical Engineering,Hunan Chemical Vocational and Technical College,Zhuzhou 412000,Hunan,China;CRRC Zhuzhou Electric Locomotive Co.,Ltd.,Zhuzhou 412000,Hunan,China)

机构地区：[1]湖南化工职业技术学院机电工程学院,湖南株洲412000 [2]中车株洲电力机车有限公司,湖南株洲412000

出　　处：《金属加工（热加工）》2024年第12期34-39,44,共7页MW Metal Forming

基　　金：湖南省教育厅资助科研项目优秀青年项目(23B0966)。

摘　　要：通过碳当量和冷裂纹敏感系数计算,以及硬度、金相组织检测等试验方法,对汽车轮辐和轮辋用钢热轧马氏体双相钢MH600DP和贝氏体双相钢MH540FB的焊接性,以及MAG焊角接接头焊缝组织、显微硬度分布进行了研究。研究成果具有一定的现实意义和应用价值。Investigates the weldability of hot-rolled martensitic dual-phase steel MH600DP and bainitic dual-phase steel MH540FB for automotive wheel spokes and rims through calculations of carbon equivalent,cold cracking sensitivity coefficient,hardness,and metallographic analysis.The research includes the study of MAG welded butt joint weld seam structure and microhardness distribution.The research findings have certain practical significance and application value.

关 键 词：双相钢 MAG焊 显微组织 显微硬度 

分 类 号：TG457.11[金属学及工艺—焊接]