Effects of intermediate annealing (IA) on the r-value and recrystallization
texture in 5000 series aluminum alloy sheets containing magnesium of about
5wt.% were investigated. The r-values of recrystallization annealed sheets
varied with the reduction in cold rolling after IA. The {145}[321] type re
crystallization texture was formed in the low reduction of about 10%, while
the {310}[132] type texture was observed in the high reduction over 40%. T
he restoration process was also changed with an increase in the reduction,
from strain induced grain boundary migration type to nucleation and growth
type. In the intermediate reduction region of about 30%, the observed textu
re was relatively random, probably due to a mixture of both the restoration
processes. The processing window, to obtain good combination of the high r
-value and less anisotropy, was discussed in terms of restoration in the fi
nal annealing and the resultant texture. (C) 1998 Published by Elsevier Sci
ence S.A. All rights reserved.