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<p>CrMnFeCoNiMoY<sub><i>x</i></sub> (<i>x</i> = 0, 0.05, 0.1, 0.15, 0.2) high-entropy alloy coatings (HEC) were prepared on the surface of 304 stainless steel by plasma cladding technology. X-ray diffraction (XRD), metallographic microscope (OM), scanning electron microscope (SEM), energy spectrometer (EDS), microhardness tester, friction and wear testing machine, and an electrochemical workstation were used to analyze the changes of different Y element contents on the microstructure and properties of the CrMnFeCoNiMoY<sub><i>x</i></sub> HEC. The results show that the phase compositions of CrMnCoNiMo is the Ni-Cr-Co-Mo phase, and that the coating with the Y element will not change its phase after heat treatment. When the Y content is 0.1 mol, the medium axial grains of the coating are transformed into long strips after heat treatment, and the wear resistance of the coating is better. When the Y content is 0.15 mol, the grain becomes a long strip, and the grain size decreases relatively, resulting in a slight decrease in the corrosion resistance and hardness of the coating. When the Y content is 0.2 mol, coarse equiaxed crystals appear in the coating, and the coating performance decreases. When the Y content is 0.5 mol, the structure and properties of the coating did not change much compared to when no Y element was added. Therefore, the structure and properties of the coating are relatively good when the Y element content is 0.1 mol.</p>

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Effect of Y on Microstructure and Properties of CrMnFeCoNiMoYx High-Entropy Alloy Coating After Heat Treatment

  • 期刊论文

  • 发表日期：

    2025年9月12日

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  • Bengsheng Huang,
  • Junlin Wang,
  • Hongyu He,
  • Maomin Chen,
  • Xiaowei Wang,
  • Jianneng Zheng,
  • Yongyou Zhu,
  • Guoqu Shen

摘要

CrMnFeCoNiMoYx (x = 0, 0.05, 0.1, 0.15, 0.2) high-entropy alloy coatings (HEC) were prepared on the surface of 304 stainless steel by plasma cladding technology. X-ray diffraction (XRD), metallographic microscope (OM), scanning electron microscope (SEM), energy spectrometer (EDS), microhardness tester, friction and wear testing machine, and an electrochemical workstation were used to analyze the changes of different Y element contents on the microstructure and properties of the CrMnFeCoNiMoYx HEC. The results show that the phase compositions of CrMnCoNiMo is the Ni-Cr-Co-Mo phase, and that the coating with the Y element will not change its phase after heat treatment. When the Y content is 0.1 mol, the medium axial grains of the coating are transformed into long strips after heat treatment, and the wear resistance of the coating is better. When the Y content is 0.15 mol, the grain becomes a long strip, and the grain size decreases relatively, resulting in a slight decrease in the corrosion resistance and hardness of the coating. When the Y content is 0.2 mol, coarse equiaxed crystals appear in the coating, and the coating performance decreases. When the Y content is 0.5 mol, the structure and properties of the coating did not change much compared to when no Y element was added. Therefore, the structure and properties of the coating are relatively good when the Y element content is 0.1 mol.