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<p>This study aims to optimize the laser cladding process parameters and investigate the role of Cu addition on the wear resistance of Cu-modified Ni-based coatings on H13 steel. By using the single-variable method, the coatings were fabricated under nine distinct sets of parameters (including laser power, scanning speed, and powder feed rate) to evaluate their effects on macromorphology, microstructure, phase composition, elemental segregation, and microhardness. The results demonstrate that the coatings predominantly consist of columnar and cellular crystals, with microhardness varying between 600 and 750&#xa0;HV<sub>0.2</sub> depending on the process parameters. Furthermore, the addition of Cu significantly improved the wear resistance of the coatings, achieving a low friction coefficient of 0.29. Based on a comprehensive analysis, the optimized combination of laser process parameters was determined to be: a laser power of 1600&#xa0;W, a scanning speed of 2&#xa0;mm/s, and a powder feed rate of 10&#xa0;g/min.</p>

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Parameter Optimization and Performance Study of Cu-Enhanced Ni-Based Coating

  • 期刊论文

  • 发表日期：

    2026年6月1日

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  • Yao Fangping,
  • Song Jincheng,
  • Chen Hongfei,
  • Li Jinhua

摘要

This study aims to optimize the laser cladding process parameters and investigate the role of Cu addition on the wear resistance of Cu-modified Ni-based coatings on H13 steel. By using the single-variable method, the coatings were fabricated under nine distinct sets of parameters (including laser power, scanning speed, and powder feed rate) to evaluate their effects on macromorphology, microstructure, phase composition, elemental segregation, and microhardness. The results demonstrate that the coatings predominantly consist of columnar and cellular crystals, with microhardness varying between 600 and 750 HV0.2 depending on the process parameters. Furthermore, the addition of Cu significantly improved the wear resistance of the coatings, achieving a low friction coefficient of 0.29. Based on a comprehensive analysis, the optimized combination of laser process parameters was determined to be: a laser power of 1600 W, a scanning speed of 2 mm/s, and a powder feed rate of 10 g/min.