WANG Dongchun, Du Jintao, LIU Hui, et al. Key issues in laser cladding of tungsten carbide wear resistant materials. [J]. 51(8):146-152(2021)
DOI:
WANG Dongchun, Du Jintao, LIU Hui, et al. Key issues in laser cladding of tungsten carbide wear resistant materials. [J]. 51(8):146-152(2021) DOI: 10.7512/j.issn.1001-2303.2021.08.20.
Key issues in laser cladding of tungsten carbide wear resistant materials
Due to high hardness,high melting point and other characteristics,tungsten carbide material is widely used as a hard phase for laser cladding surface strengthening,which can greatly improve the surface wear resistance and corrosion resistance. Tungsten carbide improves the performance of laser cladding layer,but there are some problems such as pores,cracks and uneven tungsten carbide particles. A lot of researches have been carried out on the key issues of thermal history and microstructure evolution,convection and element diffusion in molten pool,decomposition and thermal damage,thermal stress and defect,and wear mechanism during laser cladding process of tungsten carbide. On this basis,the shortcomings and future development trend of laser cladding of tungsten carbide are pointed out.