Influence of austenite substructure on structure and properties of low alloy steels quenched directly from hot deformation temperature

Abstract

AbstractExperiments were made to determine the influence of the substructure of hot deformed low alloy steel austenite on the structure and mechanical properties of shear type γ → α transformation products. Four steels having 0.16–0.20%C and additions of Mo, V, and B were used. Immediately before γ → α transformation, austenite was deformed by rolling according to a programme simulating the reduction schedule in industrial plate mills. It was found that the increase in strength owing to the effect of austenite substructure on the structure of shear type γ → α transformation products was small and did not exceed 10%.