Abstract
The structure and phase composition of several typical chromium steels subjected to ion-beam treatment with intense beams of nitrogen ions have been studied, and the effect of parameters of the structural state of modified layers on their hardness and wear resistance upon friction without lubricant has been examined as well. The content and size of CrN particles in nitrogen-implanted high-chromium steels has been determined. The formation of fields of elastic interphase deformations has been found in the modified layers of high-chromium steels containing CrN particles, and the factor of the volume misfit Δv/v has been estimated. It has been shown that the ion-beam nitriding substantially enhances the wear resistance of the nitrogen-modified layers of high-chromium steels. It has been concluded that CrN particles block plastic shears in the modified layers, retard the processes of localization of deformation in them, and decelerate the kinetics of nucleation and propagation of microcracks upon friction. It has been established that an increase in the volume fraction of CrN particles present in the modified layers of chromium steels is accompanied by a proportional growth of their wear resistance.
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Original Russian Text © A.V. Belyi, V.A. Kukareko, 2007, published in Fizika Metallov i Metallovedenie, 2007, Vol. 104, No. 6, pp. 641–649.
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Belyi, A.V., Kukareko, V.A. The structural state and wear resistance of chromium steels modified with nitrogen ions. Phys. Metals Metallogr. 104, 618–626 (2007). https://doi.org/10.1134/S0031918X07120101
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DOI: https://doi.org/10.1134/S0031918X07120101