Abstract: The kinetics of recrystallization in cold-rolled low-alloy high strength steel was studied by thermal simulation test. A kinetic model of recrystallization was built based on JMAK equation， which provided a theoretical basis to control ferrite recrystallization and precipitation behavior. The results show that the recrystallization completion time is greatly decreased with increasing annealing temperature. For the same reduction of cold rolling， the initial bainite structure contains a higher dislocation density and storage energy during annealing. The recovery and recrystallization process are synchronously advanced at the heating rate of 80℃/s， and the residual deformation storage energy increases before recrystallization so that the ferrite recrystallization can be quickly completed. Moreover， after the new process， the precipitation size in the experimental steel is more uniform and the volume fraction is higher， which lead to a better performance of precipitation strengthening.

Key words: cold-rolled, low-alloy steel, recrystallization, annealing, precipitation