Abrasive Wear Resistance of High-Speed Steel R6M5 after Laser Melting and Tempering

Abstract

This paper presents experimental studies of the microstructure, phase composition, microhardness distribution, estimation of abrasive wear resistance of rapid steel, grade R6M5, after laser melting and subsequent tempering. A multichannel (40 beams) CO₂ laser was used to process the steel. It has been demonstrated that improved abrasive wear resistance is achieved after laser melt quenching and short-term tempering at 560°C.