An investigation of mechanical property and three-body impact abrasive wear behavior of a 0.27% C dual phase steel

The present investigation is aimed to understanding the influence of the morphologies and quantity of ferrite which was obtained by different thermomechanical controlled processes (TMCPs) on microstructure, mechanical properties and three-body impact abrasive wear behavior in a 0.27 wt% C low alloy dual phase steel. The results indicate that acicular ferrite which was obtained by controlled rolling at the low temperature with laminar cooling was partially retained after intercritical heat treatment, and leading to much better mechanical properties and abrasion resistance than in the case of polygonal ferrite. Little retained finer acicular ferrite in dual phase steel deflects the propagation of cracks and increases the impact toughness and abrasive wear resistance.