Influence of transformation plasticity on the distortion of carburized quenching process of Cr-Mo steel ring

摘要

Coupled metallo4hermo-mechanical analysis by use of heat treatment simulation code "HEARTS" is carried out for a ring-shaped model of Cr-Mo steel under carburized quenching: Diffusion of carbon carrier gas is calculated followed by oil-quenchingfrom 850°C to estimate the distortion as well as structure distribution. To compensate the discrepancy between experimental data and calculated distortion, a special attention is paid on the effect of transformation plasticity. Several trials ofsimulation depending on the intensity of the effect shows that the transformation plastic strain plays an important role on the mode of distortion during carburized quenching process while a little effect is seen for normal quenching.