摘要
采用激光熔覆同步超声振动(超声振动频率25 kHz)在30CrMnSi基体表面制备Ni60熔覆层,研究超生振动激光熔覆层的组织特点,并与常规激光熔覆层进行组织对比,研究超生振动抑制熔覆层裂纹产生的原因。实验结果表明,无论是组织均匀性、形核率还是熔覆层元素分布,超声振动激光熔覆层均优于未施加超声振动激光熔覆层。
Ni60 cladding layer on the surface of 30CrMnSi substrate was prepared using laser cladding simultaneous ultrasonic vibration （ultrasonic vibration frequency 25 kHz） method, laser cladding layer characteristics were researched by ultrasonic vibration, and compared with the conventional laser cladding layer, the causes of ultrasonic vibration suppression of cladding layer crack were studied. The experimental results show that：for the microstructure uniformity, the nucleation rate and the element cladding layer distribution, ultrasonic vibration of laser cladding layer is higher than that of no ultrasonic vibration on the laser cladding layer.
出处
《热加工工艺》
CSCD
北大核心
2014年第10期160-162,165,共4页
Hot Working Technology
关键词
激光熔覆
超声振动
显微组织
laser melting coating
ultrasonic vibration
microstructure
