半导体激光熔覆Ni基合金堆焊层组织及性能的研究  

Study on Microstructureand Properties of Nickel Base Alloy Surfacing Layer by Diode Laser Cladding

作　　者：李正秋[1] 石玗[1] 曹驰[2] 苏艳文[1] 

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050 [2]兰州理工大学温州泵阀工程研究院,浙江温州325105

出　　处：《应用激光》2016年第5期547-552,共6页Applied Laser

基　　金：国家火炬计划资助项目(项目编号:2015GH531401);温州市激光与光电产业集群科技专项资助项目(项目编号:j20130014)

摘　　要：研究了采用大光斑半导体激光进行表面堆焊时,保持其它工艺参数不变,不同的激光功率(900、1 100、1 300、1 500、1 700W)在Q235基体上对Ni60合金粉末单道堆焊层熔深、熔宽、稀释率、显微组织及硬度、耐磨性的影响。研究表明,随着激光功率的增加,堆焊层熔深、熔宽、稀释率、枝晶尺寸均增加,硬度、耐磨性降低。根据激光功率对单道熔覆层性能的影响,选取最佳激光功率参数进行单层多道焊,得到宏观形貌良好的堆焊平面。When using large flare diode laser for surfacing,keeping other parameters constant,the influence about the weld penetration,weld width,dilution rate,microstructure,hardness and wear resistance of Ni60 alloy single pass surfacing layer on Q235 base with different laser power（900,1 100,1 300,1 500,1 700）has been researched.Research shows that with the increase of laser power,the weld penetration,weld width,dilution rate and dendrite size of the surfacing layer have been increased,the hardness and wear resistance of surfacing layer have been reduced.According to the influence of the laser power on the performance of the single pass cladding layer,the optimal laser power parameters are selected to make the single layer multi-pass welding,and the surfacing plane with good macro-profile is obtained.

关 键 词：材料加工 激光熔覆 堆焊 微观组织 性能 

分 类 号：TG456.7[金属学及工艺—焊接]