(1. Jiangxi University of Science and Technology, Ganzhou 341000, China; 2. Ningbo Institute of Materials of Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China; 3. Yangzhou University, Yangzhou 225127, China)
Abstract：The TiC reinforced Ni–30Fe–20Al composite layer with different TiC mass fractions (0, 10% and 20%) was prepared on the stainless steel by laser cladding technology using fiber laser cladding system to investigate the microstructure and mechanical properties and the influence of the TiC content on the composite properties. The macro-morphology, microstructure, phase and micro-hardness of the composites were characterized. The results show that the cladding layer has a good metallurgical combination with the substrate. Most of the TiC particles existed as the TiC compounds, which distributed uniformly in the cladding layer. Some TiC particles remelting formed new phases with different atomic ratios, which further improved the hardness of cladding layer. With the increase of the proportion of TiC powder, the hardness of the cladding layer increases.
2021, 
