Investigation on friction surface of high-carbon low-alloyed steel after abrasive wear

Abstract

Samples of 120Mn3Si2 steel were water-quenched from 900 oC and tested on three-body abrasive wear laboratory machine.\xa0 Microstructure, XRD investigation and microhardness measurement have been performed on worn surface. It was established three distinctive areas in-depth under surface: plastic deformation of austenite, partial phase transformation of deformed austenite, fully transformed material with martensitic structure. Practically no austenite was detected on the very surface according to XRD profile. Microhardness of worn surface was distributed in wide range of values with most probable value at 1400 HV0.05.