On the correlation of shear band formation and texture evolution in α-brass during accumulative roll bonding

We studied the microstructural evolution of the low stacking fault energy alpha-brass alloy CuZn15 during accumulative roll bonding (ARB). Most notably, the typical brass-type texture was clearly observed after four ARB passes (approx. 93.8% total thickness reduction), before significant shear localization set in. This observation contradicts the widely accepted idea that shear band formation is a necessary prerequisite for the development of the brass type texture, indicating that the two phenomena, shear banding and development of the brass texture, are only correlated in ARB, and that their order of appearance can be switched depending on experimental parameters. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.