激光功率对Fe基复合熔覆层中TiC形态及性能的影响

Effect of Laser Power on TiC Morphology in Fe Based Composite cladding layer

采用激光熔覆技术在高锰钢基材上制备了不同激光功率下的Fe基复合熔覆层,研究了不同激光功率对熔覆层中TiC形态及性能的影响。试验结果表明,熔覆层组分包含奥氏体和TiC,随着激光功率的增加,TiC析出相由单一颗粒状转变为梅花状、蕨状及颗粒状的组合,晶粒尺寸增加,熔覆层硬度和耐磨性逐步提升。

Fe based composite cladding layer was prepared on high manganese steel substrate by laser cladding technology under different laser power.The effects of different laser power on the morphology of TiC in the cladding layer and the properties of the cladding layer were studied.The test results showed that the components of the cladding layer include austenite and TiC.With the increase of laser power,the TiC precipitates changed from a single granular to a combination of plum blossom,fern and granular,the grain size increases,and the hardness and wear resistance of the cladding layer were gradually improved.