The compression deformation test at temperature between 850 T and 1 000 X. with strain rate 0.1 * 10 1/s of steel BSOMnSi- 0.32C
1.04Mn
0.85Si
0.019P
0.009S has been carried out using Gleeble-1500 thermal simulation machine to study the dynamic recrystallization behavior of the steel. And the relation of peak stress σm
peak strain %
dynamic recrystallization critical strain q with temperature compensating deformation rate factor Z has been got by regression analysis