High-temperature strength of die steel with regulated austenitic transformation during exploitation after quenching and tempering

Abstract

Steels with regulated austenitic transformation during exploitation (RATE) are a new class of ferritic-based tungsten-free tool steels for hot forming. The study obtained quantitative data on the high-temperature strength of RATE steel of new composition after quenching and tempering. The stress-strain curves are plotted and the tendency of steel to strain hardening at temperatures of 450 and 750 °C is estimated. It was established that at a temperature of 750 °C, corresponding to the operating temperature, RATE steel has a stronger tendency to work hardening than at a temperature of 450 °C.