Effect of High-Temperature Tempering on the Deformation Behavior of 38G2F Steel

Abstract

We study the structure and mechanical properties of 38G2F structural steel after quenching and high-temperature isothermal tempering of different durations. By analyzing the stress-strain diagrams in conventional and true coordinates, we reveal specific features of the deformation behavior of samples on the yield plateau and in the uniform stage of deformation. We also analyze the influence of the distribution of strain component ε_yy along the working part of the sample on the variations of strength and plastic characteristics of steel in different stages/periods of tension.