Dynamic recrystallization behavior of a superaustenitic stainless steel containing 16%Cr and 25%Ni

► Grain boundary bulging is responsible for the nucleation of dynamic recrystallization in superaustenitic stainless steels. ► The average value of apparent activation energy for hot deformation is 484 kJ/mol. ► An anomalous increase is seen in the decreasing trend of the critical and peak strains with increasing deformation temperature. It is seen when ln Z is around 14.3. ► The anomalous increase of the characteristic strains is due to the dragging effect of phosphorous on grain boundaries.