送丝速度对铝硅镀层钢激光填丝焊接接头组织和性能的影响  

Effects of Wire Feeding Speed on Microstructure and Mechanical Properties During Laser Filler Wire Welding of Al-Si Coated Hot-Formed Steel

作　　者：邢德远 曹洋[1] 彭云[1] 马成勇[1] 赵琳[1] 夏明生[2] 田志凌[1] Xing Deyuan;Cao Yang;Peng Yun;Ma Chengyong;Zhao Lin;Xia Mingsheng;Tian Zhiling(Institute of Welding,Central Iorn and Steel Research Institute,Beijing 1008l,China;Technology Center,Tangshan Iron and Steel Group Co.,Ltd.,Tangshan 063016,Hebei,China)

机构地区：[1]钢铁研究总院有限公司焊接研究所,北京100081 [2]唐山钢铁集团有限责任公司技术中心,河北唐山063016

出　　处：《应用激光》2025年第1期16-25,共10页Applied Laser

基　　金：国家重点研发计划资助(2021YFB3701702);钢铁研究总院自主投入研发专项(事21H62570Z)。

摘　　要：采用光纤激光器焊接带铝硅镀层的22MnB5热成形钢,研究不同送丝速度对焊缝宏观形貌、熔滴过渡形式、焊缝组织、元素含量与分布、拉伸性能的影响。结果表明,焊缝成形良好,无明显缺陷。熔滴过渡形式为液桥过渡。不同送丝速度下热处理后的焊缝组织均由马氏体和δ-铁素体组成,随着送丝速度的增大,焊缝中的Al元素含量和δ-铁素体占比不断减小。随着送丝速度的增大,接头拉伸强度先增大后减小。22MnB5 hot-formed steel with aluminum-silicon coating was welded by fiber laser.The effects of different wire feeding speeds on the weld morphology,droplet transition form,microstructure,element content and distribution,and tensile properties were studied.The results showed that the weld formed well and had no obvious defects.The droplet transition is a liquid bridge transition.The weld microstructure after heat treatment at different wire feeding speeds is composed of martensite andδ-ferrite.With the increase of wire feeding speed,the content of Al andδ-ferrite in the weld decreases continuously.With the increase of wire feeding speed,the tensile strength of the joint first increases and then decreases.

关 键 词：激光技术 铝硅镀层热成形钢 激光填丝焊接 送丝速度 组织 力学性能 

分 类 号：TG456.7[金属学及工艺—焊接]