Table of Contents
Textures and Microstructures
Volume 14–18
http://dx.doi.org/10.1155/TSM.14-18.859

Effects of Alloying Elements and Hot–Rolling Temperature on Textures and r¯ Values of Continuous–Annealed Extra Low Carbon Steel Sheets

Research Institute of Industrial Science and Technology, P. O. Box 135, Pohang, Korea

Copyright © 1991 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The effects of hot rolling temperature and alloying elements on the textures and r¯ values of cold rolled and annealed extra low carbon steel sheets have been investigated. The steels examined were one extra low carbon Al–killed steel and two Ti–IF (Interstitial Free) steels with or without phosphorus. (200) pole figures and relative intensities of various reflections from the rolling plane were determined for hot bands and annealed sheets. The hot rolled textures are found, when finish-rolled at about 900°C, random regardless of the steels tested. when the finish rolling temperature is lowered to the ferrite region temperature of 750°C, however, the principal preferred orientation of (100)[011] is developed. r¯ values of annealed sheets are decreased with decreasing the finish rolling temperature. This could be related to the presence of the stronger (100)[011] component, which is originated from the texture inhomogeneity in the through thickness direction of the hot bands at 750°C. The steel having the lower r¯ value revealed the higher yield point elongation which is closely related to the solute carbon content in the steels. The major component of the recrystallization texture was near {554}<225> irrespective of the steels tested, but the intensity of (100)[011] component was increased with decreasing the finish hot rolling temperature.