Microstructure and High-Temperature Wear Resistance of Feal-Tib2 Composite Coating by Extreme High-Speed Laser Cladding

In order to improve the wear resistance of carbon steel under the high-temperature wear environment, in-situ FeAl-TiB 2 coating with different TiB 2 contents was prepared by extreme high-speed laser cladding using Fe powders, Al powders, and TiB 2 powders. The phase composition, microstructure, and wear mechanism of the coating were studied. The results show that the composite coating is mainly composed of FeAl and TiB 2 . TiB 2 is uniformly distributed in the composite coating. When the TiB 2 content is less than 10wt%, the wear mode of the coating is mainly oxidation wear, while when the TiB 2 content is 15wt%, the wear mode is mainly oxidation wear and abrasive wear. FeAl-10wt% TiB 2 coating has the narrowest wear scar width, denser wear surface, and the lowest friction coefficient.

Keywords: FeAl-TiB2 coating，extreme high-speed laser cladding， wear resistance at high-temperature

Suggested Citation: Suggested Citation

Yuan, Jianjun and Chi, Xinyu and Li, Jinbao and Cui, Yidan and Pan, Guanghao and Li, Xiang and Lou, Shumei, Microstructure and High-Temperature Wear Resistance of Feal-Tib2 Composite Coating by Extreme High-Speed Laser Cladding. Available at SSRN: https://ssrn.com/abstract=4198960 or http://dx.doi.org/10.2139/ssrn.4198960