N. N. Soboleva, N. A. Davydova, A. V. Makarov

THE EFFECT OF THE MULTIPLICITY OF FRICTIONAL ACTION ON THE MICROMECHANICAL PROPERTIES OF NiCrBSi-COATINGS

The paper investigates the effect of the number of passes (1 or 2) of an indenter made of fine cubic boron nitride during friction treatment of PG-SR2 and PG-10N-01 NiCrBSi-coatings on the micromechanical properties of their surface layers. The friction treatment of the coating surface under all the process conditions studied, in comparison with the initial polished state, increases the strength characteristics of the coating surface layer and the parameters indicating the resistance of the material surface to elastic-plastic deformation. The effect of the number of indenter passes during surface friction treatment on the strength characteristics is found to be more significant for the softer and more ductile PG-SR2 coating than for the PG-10N-01 coating. This is attributed to the higher strain hardenability of the former.

Acknowledgment: The work was performed according to the state assignments for the IES UB RAS, theme No. AAAA-A18-118020790148-1, and for the IMP UB RAS, theme No. AAAA-A18-118020190116-6. The experimental research was performed in the Plastometriya shared research facilities of the IES UB RAS.

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