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<p>Using GCr15 steel as the substrate, this study selects WC particles with sizes of 2-4&#xa0;μm and 40-50&#xa0;μm as the coating materials. The embedded WC coatings are prepared using machine hammer peening technology. From the perspectives of coating surface and cross sectional morphology, coating coverage, surface roughness, surface hardness, coating adhesion performance, and tribological properties, the influences of machine hammering force on the micro-structure of WC embedded coatings on GCr15 steel substrates are investigated. The results indicate that under varying hammering forces, the embedding of WC coatings on GCr15 is effective. Significant fragmentation of the 2-4 and 40-50&#xa0;μm WC particles is evident on the surface of the steel substrate. The increase in hammering force significantly enhances the coverage of the WC coatings. For the 2-4&#xa0;μm WC coatings, the surface roughness initially decreases with increasing hammering force before stabilizing. The 40-50&#xa0;μm WC coatings, the surface roughness shows a positive correlation with the increase in hammering force. Furthermore, the bonding quality of the WC coatings with different particle sizes improves with increasing hammering force. The surface hardness of the WC coatings is significantly enhanced and increases with the rising force. Additionally, the increase in hammering force markedly improves the wear resistance of both particle size WC coatings, providing effective protection to the substrate. In summary, the mechanical hammering force significantly influences the performance of WC embedded coatings.</p>

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Study on the Effect of Hammering Force on the Microstructure of WC-Embedded Coatings on GCr15 Steel

  • 期刊论文

  • 发表日期：

    2025年8月20日

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  • Xiaohui Lin,
  • Guoliang Sun,
  • Jiaming Xu

摘要

Using GCr15 steel as the substrate, this study selects WC particles with sizes of 2-4 μm and 40-50 μm as the coating materials. The embedded WC coatings are prepared using machine hammer peening technology. From the perspectives of coating surface and cross sectional morphology, coating coverage, surface roughness, surface hardness, coating adhesion performance, and tribological properties, the influences of machine hammering force on the micro-structure of WC embedded coatings on GCr15 steel substrates are investigated. The results indicate that under varying hammering forces, the embedding of WC coatings on GCr15 is effective. Significant fragmentation of the 2-4 and 40-50 μm WC particles is evident on the surface of the steel substrate. The increase in hammering force significantly enhances the coverage of the WC coatings. For the 2-4 μm WC coatings, the surface roughness initially decreases with increasing hammering force before stabilizing. The 40-50 μm WC coatings, the surface roughness shows a positive correlation with the increase in hammering force. Furthermore, the bonding quality of the WC coatings with different particle sizes improves with increasing hammering force. The surface hardness of the WC coatings is significantly enhanced and increases with the rising force. Additionally, the increase in hammering force markedly improves the wear resistance of both particle size WC coatings, providing effective protection to the substrate. In summary, the mechanical hammering force significantly influences the performance of WC embedded coatings.