1 Zhejiang Institute of Mechanical and Electrical Engineering, Hangzhou 310053, China; 2 Hangzhou Senlay Laser Technology Co., Ltd, Hangzhou 311217, China; 3 Hangzhou Mechanical Desigh Research Institute, Ministry of Water Resource, Hangzhou 310012, China; 4 Key Laboratory of Research on Hydraulic and Hydro-power Equipment Surface Engineering Technology of Zhejiang Province, Hangzhou 310012, China
Abstract: Laser cladding is a widely used coating preparation method, which can realize the precise control of energy and quality, has little thermal effect on the substrate, has low coating dilution ratio, and forms metallurgical combination with the substrate. Compared with bulk materials, the application of coating reduces the waste of materials and conforms to the concept of environmental protection. In recent years, laser cladding technology is one of the main hot spots in the field of high-entropy alloy. Due to the “cocktail effect” of high-entropy alloy, the choice of main elements plays a decisive role in the coating performance. Therefore, this paper mainly introduces the influence of the main elements of alloy elements on the phase formation and the properties of wear resistance, corrosion resistance and oxidation resistance in the laser cladding of high-entropy alloy coating. This paper mainly introduces the influence rules of the main metal elements Fe, Cr, Mn, Al, Ti, Co, Ni and the four non-metal elements C, N, B, Si in the high-entropy alloy. The results show that the composition and structure of the high-entropy alloy phase can be changed by macro and micro alloying, so as to improve the properties of the material. In addition, the application prospect and future research direction of laser cladding high-entropy alloy coating are also prospected.
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