摘要
利用2kWCO2激光器在A3钢板上进行Ni基WC金属陶瓷的激光熔覆试验,研究了在不同工艺条件及碳化钨含量下熔覆层的开裂性能。结果表明,碳化钨金属陶瓷激光熔覆层中碳化钨本身成了裂纹产生与扩展的薄弱环节,但碳化钨含量较高时熔覆层裂纹率反而降低。试验结果还显示,不同碳化钨含量下。
A 2 kW CO 2 laser has been used to deposit single tracks of Ni based WC alloy onto a steel A3 substrate. Effects of laser processing conditions and weight fractions of WC particles on the cracking tendency of coatings are studied. Results show that WC particles are the weak points of cracking in the laser cladding composite coatings, but when WC proposition is higher, the cracking numbers in composite coatings will decrease. Effects of laser traveling speed on the cracking tendency of coatings will be altered at various WC weight fractions.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1997年第6期570-576,共7页
Chinese Journal of Lasers
基金
武汉市晨光科技基金
华中理工大学国家模具重点实验室开放基金
关键词
激光熔覆
金属陶瓷
开裂性
laser cladding, ceramic metal, cracking tendency