Work hardening and kinetics of dynamic recrystallization in hot deformed austenite

Abstract

The work hardening behaviors of 4 steels deformed under dynamic recrystallization (DRX) conditions were analysed. The h and r parameters necessary to describe the work hardening or dynamic recovery (DRV) curves in the absence of DRX were determined from the experimental flow curves. The fractional softening X attributable to DRX, defined as the difference between the calculated DRV and experimental DRX curves, was used to derive the Avrami kinetics of DRX. Some conclusions are drawn about the effects of deformation temperature, strain rate and steel composition on the kinetics of DRX. © 2010 IOP Publishing Ltd.