Effect of Nickel on the Wear Rate of Fe-Cr-C-Ni Steel Under Sliding Friction

摘要

Under sliding friction, nickel (0.3-4.2 wt.%) alloyed with chromium steel (1.2 wt.% carbon; 15 wt.% chromium) exerts a fundamental influence upon the initial structure of the steel and the phase composition and structure of the near-surface friction layers. The minimum wear of the steel occurs when there is a dynamic equilibrium between the dislocation densities in the α- and γ-phases and a ratio between the γ- and α-phases of 50:50 for steels after quenching and 25:75 for steels after tempering in the near-surface friction layers.