Influence of structure and properties for laser cladding fe based alloy on 45 steel surface

Abstract

Abstract This article uses 45 steel as the substrate and iron based alloy powder as the cladding material for mining machinery equipment. Laser cladding experiments were conducted without scanning speed to prepare 45 steel surface cladding iron based alloy layer samples. The samples were subjected to microstructure analysis, hardness, and acid corrosion resistance testing. The results show that the microstructure of the laser cladding layer is a fine-grained equiaxed crystal structure, and the hardness of the cladding layer is higher than that of the substrate. The corrosion rate of the cladding layer is low in various acid corrosive environments. The laser cladding layer is significantly higher in all aspects than the substrate, achieving the goal of high-quality preparation of iron based alloy coatings on the surface of 45 steel substrates.