Scholarlink

<p>To improve the surface wear resistance of Q345, CrMnFeCoNi+x(WC) coatings were prepared based on the laser cladding (LC) technology. The effects of different WC contents on the microstructure and tribological properties of CrMnFeCoNi coatings were studied by SEM, XRD, etc. Meanwhile, its surface properties were further strengthened through ultrasonic impact treatment (UIT). The results demonstrate that as the WC content is increased, the matrix phase undergoes grain refinement and lattice distortion, and the porosity in the coating is significantly reduced, which leads to enhanced densification. WC undergoes a significant decarburization reaction during the cladding process, which results in the formation of a diffuse reinforcement in the coating. This process enhances the microhardness and wear resistance of the coating, in which the maximum&#xa0;microhardness is 482.35 HV0.3 and&#xa0;the&#xa0;minimum wear rate is&#xa0;0.019 μm<sup>3</sup>·N<sup>−1</sup>·μm<sup>−1</sup>, respectively. In addition, UIT increases the surface dislocation density and introduces a gradient composite structure, further enhancing the microhardness and wear resistance of the composite coating. The findings of this study are conducive to the development of high-performance wear-resistant coatings for industrial applications.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The influence of ultrasonic impact on the wear resistance of laser cladding CrMnFeCoNi/WC composite coatings

  • 期刊论文

  • 发表日期：

    2025年11月7日

查看全文
  • Guanhua Xu,
  • Xinyu Dong,
  • Yansong Wang,
  • Chen Liu,
  • Hongyao Shen,
  • Bangping Gu

摘要

To improve the surface wear resistance of Q345, CrMnFeCoNi+x(WC) coatings were prepared based on the laser cladding (LC) technology. The effects of different WC contents on the microstructure and tribological properties of CrMnFeCoNi coatings were studied by SEM, XRD, etc. Meanwhile, its surface properties were further strengthened through ultrasonic impact treatment (UIT). The results demonstrate that as the WC content is increased, the matrix phase undergoes grain refinement and lattice distortion, and the porosity in the coating is significantly reduced, which leads to enhanced densification. WC undergoes a significant decarburization reaction during the cladding process, which results in the formation of a diffuse reinforcement in the coating. This process enhances the microhardness and wear resistance of the coating, in which the maximum microhardness is 482.35 HV0.3 and the minimum wear rate is 0.019 μm3·N−1·μm−1, respectively. In addition, UIT increases the surface dislocation density and introduces a gradient composite structure, further enhancing the microhardness and wear resistance of the composite coating. The findings of this study are conducive to the development of high-performance wear-resistant coatings for industrial applications.

Graphical abstract