Study on Static Recrystallization Behavior of 38MnVTi Non-Quenched and Tempered Steel

The static recrystallization behavior of 38MnVTi non-quenched and tempered steel within the interval of passes was investigated by double-pass compression experiments using Gleeble-1500 thermal simulation machine. The true strain-stress curves of the steel were obtained, and the effects of deformation temperature, strain rate and pre-strain on the static recrystallization behaviours were studied. Single-pass compression experiments for 38MnVTi non-quenched and tempered steel were finished with the same conditions to the double-pass compression experiments. The static recrystallization dynamics model and the static recrystallization grain size model can be established. The predicted results of the model accord well with experimental ones, which indicate the proposed model, can give an accurate prediction of the static softening behaviour for 38MnVTi non-quenched and tempered steel. (paper)