Table of Contents
Textures and Microstructures
Volume 26 (1996)–27
http://dx.doi.org/10.1155/TSM.26-27.321

Orientation Selection During Static Recrystallization of Cross Rolled Non-Oriented Electrical Steels

1Department of Flat Rolling, Centrum voor Research in de Metallurgie, Technologiepark 9, Gent B-9052, Belgium
2Department of Metallurgical Engineering, McGill University, 3450 University Street, Quebec, Montreal H3A 2A7, Canada
3Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven, de Croylaan 2, Leuven B-3001, Belgium

Received 14 February 1996

Copyright © 1996 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

Very sharp deformation textures, with single maxima of more than 50x random centred on the rotated cube component ({001}<110>), were produced by submitting a non-oriented electrical steel sheet to various sequences of cross-rolling. The cold rolled sheets were subsequently annealed at 730ºC for 3 min. The resulting recrystallization textures were much weaker than the cold rolling textures, displaying maxima of about 5x random at locations some distance away from the {001}<110> cross rolling component.

Due to the very sharp character of the rolling texture, the conventional low and high stored energy nucleation mechanisms were effectively prevented from operating. Thus orientation selection could only take place by the selective growth of nuclei external to the dominant rolling component. Quantitative analysis of the experimental ODFs revealed that the rolling and recrystallization components are related by Σ27 (31.6º<110>) and Σ7c (38.2º<111>) coincidence site lattice (CSL) orientation relations. Simulations of the annealing texture on the basis of random nucleation and combined Σ27-Σ7c selective growth produced reasonable agreement between the predictions and the experimental results.