Annealing textures for drawability: Influence of the degree of cold rolling reduction for low-carbon and extra low-carbon ferritic steels

This work considers the optimization of deep drawing properties by studying the influence of hot rolling conditions, cold reduction rate, and final an nealing on the evolution of steel sheet textures. Two steels have been sele cted: a low-C steel used for enameling applications, and an extra-low-C ste el of the interstitial-free type. Results show that the intensity of {111} component-and, consequently, drawability-is considerably higher in the text ures of cold-rolled and annealed sheets than in hot-rolled sheets. It is su ggested that drawability of sheets annealed after cold rolling improves if greater than conventional reduction rates are used during rolling. Finally, it is shown that, contrary to what has sometimes been claimed, improvement s of the "r" coefficient are not accompanied by a "pancake" morphology of t he ferrite grains. (C) Elsevier Science Inc., 1999. All rights reserved.