| In the last decade a number of original works were published by Prof. I.A. Ovid'ko on the analysis of deformation mechanisms in nanostructured materials. It should be noted that in recent years nanostructuring of commercial alloys have been advanced for practical application. This work is devoted to improving the performance properties of Ti-6Al-4V alloy by hardening through the formation of ultrafine-grained (UFG) structure using severe plastic deformation and consequent application of the (Ti + V) N coating by vacuum - plasma deposition. The influence of the UFG structure on the enhancement of strength and adhesion properties of the coating was demonstrated. Mechanical tests at running temperatures of the alloy increased softening resistance was revealed for the coated UFG alloy in contrast with its CG and UFG counterparts without coating. The nature of the alloy behavior in terms of the "barrier effect" formation in the metal subsurface is discussed. |
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