Contact Wear of X165GrMoV12 and X160GrMoV12-1 Moderate Heat Resistant Die Steels with a Surface Modified Layer

Abstract

This article presents experimental results on the contact wear of surface layers of X165GrMoV12 and X160GrMoV12-1 steels under pulsating loads. The differences in the wear resistance of surface layers are demonstrated in relation to the synthesis modes of their structure and properties. The features of the structural evolution of modified layers hardened by nitrocarburization are revealed. The modes of thermochemical treatment aimed at achievement of maximum resistance against pulsating contact stresses are determined.