Review on analysis of enhancing wear properties through thermo-mechanical treatment and grain size

Abstract

This paper review the effects of cold rolling, thermal ageing & grain refinement on wear resistance of austenitic stainless steel (ASS). ASS is generally classified into two major series i.e. 300 and 200 series. Metallic materials wear resistance is mostly determined by their hardness and H/E ratio. As per reports, the better the H/E ratio, the greater the wear resistance. As plastic deformation causes crystalline defects such as dislocations, resulting in reduced crystalline integrity, which increases the H/E proportion generated by cold-work that did not help to improve the wear resistance. Paper also shows that the microstructure of nearly disorder and intergranular fine austenite grains with higher yielding strength and elongation provide higher wear resistance at high temperature (250 °C), which was attributed to twinning driven plasticity displaced in fine austenite grains. The annealed fine grain (FG) sample exhibits a greater hardness and worn sub-surface than the course grains (CG) sample under identical test conditions, showing improved wear resistance.