摘要
在H13钢表面进行了激光熔覆Ni基合金+WC粉末实验,测试了熔覆层的组织和性能。实验表明激光熔覆可以得到组织致密,晶粒细化,稀释率低,与基体结合牢固的表面强化层。熔覆层的平均硬度为630 HV0.2,耐磨损性能比基体提高145%。H13钢是常用热作模具钢之一,由于工作条件恶劣,经常发生磨损失效,经激光熔覆强化后,其使用寿命将大大提高。
The experiment of laser cladding on the surface of H13 steel was made.Tungsten carbide（WC） powder and Ni-base alloy powder were used as cladding material.The microstiucture and property of laser cladding layer were studied.The research showed that laser cladding layer had better properties such as compact tissue,minute crystals,low rate of dilution and good metallurgical bonding with base metal.The average hardness of cladding zone was 630 HV0.2.The anti-abrasive performance of cladding increased 145%than that of base material.H13 steel was widely used in the field of hot dies.Using laser cladding,the good wearing layer would greatly increase the mold useful life.
出处
《应用激光》
CSCD
北大核心
2012年第1期18-21,共4页
Applied Laser
基金
浙江省教育厅科研资助项目(项目编号:Y201120211)
2010年浙江省高等学校优秀青年教师资助计划(项目编号:2010299)
关键词
激光熔覆
显微组织
性能
镍基合金
碳化钨
laser cladding
micros true ture
property
nickel alloy
tungsten carbide
