Wear behavior of Fe\M7C3 MMCS during dry sliding

Abstract

The wear mechanisms of the Fe based metal matrix composites (MMCs) were systematically studied by wear testing. The experimental results show that three dominant wear mechanisms appeared in succession with increasing normal load and speed during unlubricated sliding. The transition of the wear mechanisms depends mainly upon the conditions of testing, and additionally it was seen that changes in microstructure of the steel have no marked effect on the transition. In the case of mild wear, no obvious differences in wear volume were found for the various microstructures. However, considerable differences in the wear volumes were observed under the condition of severe wear characterized by adhesion and delamination.