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<p>The paper investigates the influence of nitriding in the plasma of a&#xa0;non-self-sustained arc discharge on the structure and properties of the R6М5 instrument steel. Nitriding is performed in five modes in order to obtain modified layers of various composition and properties. Microhardness measurements of the modified layers show that the most extended hardened layer is obtained after 500 °C nitriding. According to the metallographic and XRD analyses, the synthesized layers mostly consist of the nitrogen solid solution dissolved in the ferrite phase. This is explained by the high ion energy that provides sputtering of nitride layers and the formation of structural defects in the surface layers, accelerating the diffusion process in the steel.</p>

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Influence of parameters of nitriding in non-self-sustained arc discharge plasma on structure, properties and phase composition of R6M5 high-speed steel

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • R. K. Vafin,
  • R. S. Esipov,
  • A. R. Khaitkulov,
  • A. A. Nikolaev,
  • A. A. Maslov,
  • A. V. Asylbaev,
  • K. N. Ramazanov

摘要

The paper investigates the influence of nitriding in the plasma of a non-self-sustained arc discharge on the structure and properties of the R6М5 instrument steel. Nitriding is performed in five modes in order to obtain modified layers of various composition and properties. Microhardness measurements of the modified layers show that the most extended hardened layer is obtained after 500 °C nitriding. According to the metallographic and XRD analyses, the synthesized layers mostly consist of the nitrogen solid solution dissolved in the ferrite phase. This is explained by the high ion energy that provides sputtering of nitride layers and the formation of structural defects in the surface layers, accelerating the diffusion process in the steel.