Wear mechanism of Chromium Pre-alloyed sintered steel

Abstract

The paper is focused on the wear mechanism of a chromium pre-alloyed Fe (Cr - Mo) - C sintered steel. The wear behaviour of the sintered steel is investigated through pin-on-disk tests. Two different processing conditions have been used, involving a slow cooling rate of 0.05 K/s and a process called sinter hardening with an average cooling rate of 6 K/s from the sintering temperatures (1453 and 1513 K The microscopic investigations reveal deformed layers and tracks along the direction of sliding during wear. Particular attention has also- been paid to the friction coefficient and to the role of porosity on wear.