激光焊焊接速度对DC06超深冲钢板接头组织和性能的影响  

Effect of laser welding speed on the microstructure and properties of DC06 ultra deep drawing steel

作　　者：吴兴欢[1] 赖春明 彭思涵 张智 WU Xinghuan;LAI Chunming;PENG Sihan;ZHANG Zhi(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械工程学院,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2期34-37,共4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：研究了脉冲激光焊焊接速度对DC06超深冲钢板焊缝显微组织和力学性能的影响。金相组织、硬度检测结果显示:随着焊接速度的增加,焊接热输入减小,冷却速度变快,焊缝和热影响区的铁素体晶粒有所减小;同时,焊接速度增加,高温停留时间缩短,合金元素烧损减少,焊缝和热影响区固溶强化作用增强,显微硬度有所升高。This article investigates the effect of pulse laser welding speed on the microstructure and mechanical properties of DC06 ultra deep drawing steel plate welds.The results of metallographic and hardness experiments show that as the welding speed increases,the welding heat input decreases,the cooling speed increases,and the ferrite grains in the weld and heat affected zone decrease;At the same time,the welding speed increases,the high-temperature residence time is shortened,the burning loss of alloy elements is reduced,the solid solution strengthening effect of the weld and heat affected zone is enhanced,and the microhardness is increased.

关 键 词：激光焊 DC06超深冲钢 焊接速度 微观组织 力学性能 

分 类 号：TG456.7[金属学及工艺—焊接]