Influence of high temperature heat treatment on creep properties of high speed steel

Abstract

In earlier works were presented the investigation on transformation plasticity of hardened steel with various amount of carbon and alloying elements. High transforma-tion plasticity was obtained during the first tempering at 450°C temperature when carbon segregates from solid solution and dispersive carbides form. During tempering of high chromium steel, high transformation plasticity is ob-servable during long-lasting heating and during heating repeatedly at higher than 450°C temperatures.The aim of this work is to investigate the kinet-ics of transformation plasticity of high-speed steel at 560 -650°C temperatures using bending specimens. Results of the investigation can be used for smoothing of the de-formed articles during hardening.