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Effects of YO on Microstructure and Wear Resistance of Laser Cladding Ni-Based Coating on 42CrMoA Alloy Steel

Mechanisms and Machine Science, ISSN: 2211-0992, Vol: 99, Page: 225-233
2021
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Conference Paper Description

In the paper, Ni45 alloy coating was produced by laser cladding on 42CrMoA alloy steel using the 5 kW CO laser, four-axis CNC machines and the coaxial powder feeding system. It were investigated that the effects of YO on microstructure and wear resistance of the Ni-based coating. The macromorphology and microstructures were characterized by using optical microscopy, SEM, and microhardness tester. The wear properties were evaluated on the friction-wear tester. The results show that the microstructure was first refined and then coarsened with the increase of YO addition. When the YO addition is 0.3 wt%,the coating showed the finest microstructure. Meanwhlie, the wear rates of coating were gradually decreased.

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