焊管2023，Vol.46Issue(12)：28-33,6.DOI:10.19291/j.cnki.1001-3938.2023.12.005
激光熔覆Ni60合金涂层裂纹控制研究
Research on Crack Regulation of Laser-cladding Ni60 Alloy Coatings
摘要
Abstract
In order to reduce the generation of cracks in the laser cladding layer,a Ni60 cladding layer was prepared on the surface of 42CrMo steel using laser cladding technology.The mechanism of crack formation was explored by analyzing the microstructure,phase,and energy spectrum of the cladding layer,and the effects of different laser power and preheating temperature on the crack were also investigated.The study shows that the cladding layer mainly consists of γ-(Fe,Ni),Fe₀.₆₄Ni₀.₃₆and M23C6.The thermophysical properties,the temperature gradient and the distribution of hard phase in the cladding layer between the matrix and the cladding layer all affect the number and length of cracks.With the increase of laser power and preheating temperature,the number and length of cracks in the cladding layer have improved to some extent.The research results can provide a reference basis for crack control in laser cladding Ni based alloys.关键词
激光熔覆/Ni基合金/裂纹/激光功率/预热Key words
laser-cladding/Ni-based alloy/crack/laser power/preheating分类
金属材料引用本文复制引用
叶俊洋,李先芬,沈虎,徐政..激光熔覆Ni60合金涂层裂纹控制研究[J].焊管,2023,46(12):28-33,6.基金项目
合肥工业大学2022年省级大学生创新创业训练计划"激光熔覆SiC-MoS2-Ni基自润滑涂层组织及摩擦学改性探究"(项目编号202210359045). （项目编号202210359045）
