Abstract—
This article discusses a promising method for improving the tribological properties of the surface of structural high alloy steel with ultrafine grain structure by low temperature ion nitriding in multicomponent low-pressure glow discharge plasma. The effect of treatment by intense plastic torsion deformation on the structure and mechanical properties of the surface of structural materials is demonstrated. The features of ion nitriding of such materials after their grinding are analyzed. The surface properties of samples with coarse and ultrafine grain structures are compared after chemical-thermal treatment at various temperatures of holding. The structural phase composition of the surfaces after saturation with nitrogen at low temperature is analyzed. The mechanism of surface wear after deformation and subsequent nitriding in low-pressure glow discharge is revealed and determined.
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This work was supported by the Academy of Sciences of Bashkortostan (grant no. 10-07-00167a).
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Translated by I. Moshkin
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Esipov, R.S., Abdullin, R.A., Husainov, Y.G. et al. Ion Nitriding of High Alloy Structural Steels with an Ultrafine Grain Structure at Various Temperatures. J. Surf. Investig. 15, 1092–1097 (2021). https://doi.org/10.1134/S1027451021050268
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DOI: https://doi.org/10.1134/S1027451021050268