Keyword: «ultrafine-grained structure»

Ultrafine-grained (UFG) materials obtained by methods of severe plastic deformation (SPD) have a number of unique properties, such as high strength, hardness, toughness, tendency to superplastic behavior, etc. The features of the mechanical behavior of such materials are due to their structural state, primarily the length of the intergrain boundaries and their disequilibrium. Despite the close attention to UFG materials, there are practically no works devoted to their tribological behavior. Since wear resistance is a complex indicator, which is affected by a number of factors, the study of the influence of the structure of UFG materials on their tribological behavior needs further development.