Table of Contents
Textures and Microstructures
Volume 32, Issue 1-4, Pages 47-63
http://dx.doi.org/10.1155/TSM.32.47

The Influence of Crystallographic Texture on Dynamic Recrystallization

1Institute for Metals Superplasticity Problems RAS, 39 Khalturina, Ufa 450001, Russia
2Institute of Metal Physics UB RAS, 18 Kovalevskaya, Ekaterinburg 620219, USA

Accepted 28 September 1997

Copyright © 1999 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 influence of a crystallographic texture (CT) on Dynamic Recrystallization (DRX) was investigated at T= 300℃ and 2.8 x 10-3 s-1 in Mg–5.8% Zn–0.65% Zr in detail. It was shown that mechanics and kinetics of DRX are in strong dependence on location of basal planes. Initial texture effects recrystallized grain size too. Extensive recrystallization process was observed in cases when basal planes locate parallelly or at right angles to a compression axis. Almost full recrystallization structure was formed after moderate strains. If basal planes locate at 45° to the compression axis DRX occurs slowly and the formed grain size is less as compared to the other two cases. Microstructure evolution was considered in context of relationship between DRX and mechanisms of plastic deformation. It was established that the effect of initial texture on DRX is promoted by its influence on the character of dislocation slip. The reasons for the influence of the character of dislocation slip on DRX are discussed.