Study of the strain reversal effect on the recrystallization and strain-induced precipitation in a Nb-microalloyed steel

Abstract

Efforts to produce more accurate through-process models for hot working need to take into account variations in the deformation conditions. In the present work, the effect of the reversal of the strain for a Nb-microalloyed steel is discussed. It is shown that, depending on the magnitude of the reversal, the static softening kinetics can be accelerated or delayed. The same is true for the case of the strain-induced Nb-carbonitride precipitation, leading to an interaction between both processes and the deformation path. Current models of recrystallization and precipitation have been used to analyze the obtained results.