激光熔敷WC-TiN-SiC-Co高硬质合金及机理初探  

A STUDY ON LASER CLADDING OF WC TiN SiC-Co HARD ALLOY AND THEIR STRENGTHENING MECHANISM

作　　者：张思玉[1] 王必本[1] 郑克全[1] 

机构地区：[1]兰州大学物理系,兰州730001

出　　处：《物理学报》1994年第4期678-682,T001,共6页Acta Physica Sinica

摘　　要：叙述了用一台输出功率为2kW的连续CO_2激光器,在碳钢表面实现了激光熔敷WC-TiN-SiC-Co高硬质合金的实验方法,并对激光处理后的样品,从相的组成,显微组织,硬度分布及耐磨性能等方面作了综合分析。结果表明:样品表面的化学成分,显微组织和机械性能都发生了根本性转变和很大的提高,同时对激光熔敷形成高硬质合金的机理作了初步的探讨。In this paper, the experimental procedures are presented for laser cladding WC-TiN-SiC-Co high hard alloy of the carbon steel surface using a CO2 laser with am output power of 2kW. We also give a comprehensive analysis about the phase structure, the phase morphology, the distribution profile of the hardness and the resistance to abrassion of the sample after treatment. The experimental results indicate-that the mechanical properties and the chemical composition in the surface layer of material will basically changed. Furthermore, a preliminary discussion of the strengthening mechanism of high hard alloy formed by laser cladding is alto given.

关 键 词：碳钢 硬质合金 激光熔敷 表面改性 

分 类 号：TG174.44[金属学及工艺—金属表面处理]