MICROSTRUCTURE AND HIGH-TEMPERATURE WEAR BEHAVIOR OF FE-BASED AMORPHOUS COATINGS BY LASER CLADDING

  • Lu Xie School of Management Engineering, Jiangsu Urban and Rural Construction Vocational College, Changzhou 213147, China
  • Yueming Wang Hunan Provincial Key Defense Laboratory of High Temperature Wear-resisting Materials and Preparation Technology, Hunan University of Science and Technology, Xiangtan 411201, PR China
  • Jianlin Yang School of Management Engineering, Jiangsu Urban and Rural Construction Vocational College, Changzhou 213147, China
  • Chenlong Li Hunan Provincial Key Defense Laboratory of High Temperature Wear-resisting Materials and Preparation Technology, Hunan University of Science and Technology, Xiangtan 411201, PR China
  • Xuhang Han Hunan Provincial Key Defense Laboratory of High Temperature Wear-resisting Materials and Preparation Technology, Hunan University of Science and Technology, Xiangtan 411201, PR China
  • Jie Huang Hunan Provincial Key Defense Laboratory of High Temperature Wear-resisting Materials and Preparation Technology, Hunan University of Science and Technology, Xiangtan 411201, PR China
Keywords: laser cladding, Fe-based amorphous coating, test temperature, wear behavior

Abstract

FeCrMoCB amorphous coatings were prepared on 316 stainless steel via an amorphous powder. Scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and X-ray diffraction (XRD) were used to analyze the microstructure, composition, and phase structure of the coatings. Hardness and friction wear testers were applied to investigate the microhardness and wear behavior of the coatings. Results show that the Cr23C6, Cr15Fe7C6 and Fe3Mo crystal phases appeared after laser cladding relative to the complete amorphous powder, and the amorphous phase fraction of the coating was calculated up to 68.4 % using the Verdon method. The coating exhibited a dominating adhesive wear mechanism under room temperature (RT) and transformed to a fatigue wear mechanism as wear test temperature increased to 600 °C. As the temperature was elevated from RT to 600 °C, the wear rate increased from 26 × 10–6 mm3/N·m to 79 × 10–6 mm3/N·m. The laser-cladded Fe-based amorphous coating exhibited much stronger wear performance than the 316 stainless steel, even the wear rate reached one third of that of steel.

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Published
2023-07-29
How to Cite
1.
Xie L, Wang Y, Yang J, Li C, Han X, Huang J. MICROSTRUCTURE AND HIGH-TEMPERATURE WEAR BEHAVIOR OF FE-BASED AMORPHOUS COATINGS BY LASER CLADDING. MatTech [Internet]. 2023Jul.29 [cited 2025Nov.18];57(4):341–350. Available from: https://mater-tehnol.si/index.php/MatTech/article/view/803