Microstructure and wear properties of a bainite/martensite multi-phase wear resistant steel

Abstract

The hardness, tensile properties, low temperature impact toughness and wear resistant performance in a low-carbon bainite/martensite multi-phase wear resistant steel were investigated. The results show that the multi-phase wear resistant steel with less amount of bainite exhibits better wear resistant performance at lower applied load, while the steel with more bainite displays better wear resistant performance at higher applied load. It is interesting to find that the wear rate varies with amount of baintie. Both the impact toughness and fracture elongation increase with the increase of the amount of bainite, while the hardness and strength decrease. The present work aims to provide guidance for the optimization of wear property, mechanical properties and microstructure of low carbon wear resistant steels.