Authors: Henryk Paul Adam Morawiec Emmanuel Bouzy JeanJacques Fundenberger Andrzej Piątkowski
Publish Date: 2006/05/22
Volume: 155, Issue: 1-2, Pages: 243-250
Abstract
The texture evolution during deformation of high purity fcc single crystals with initial 112 11bar1 orientation has been characterised in detail by transmission TEM and scanning SEM–FEG electron microscopes The channeldie deformed samples up to reduction of about 1–15 first developing strongly anisotropic layers of elongated cells or twinmatrix plates and then compact clusters of SB Substantial progress in understanding the mechanism of the SB formation was possible thanks to systematic local orientation measurements orientation mapping using SEM and TEM These two techniques of local orientation measurements have been compared with respect to their applicability for the study of shear banding phenomenon and for characterization of the specific nanostructure of SB in metals with fcc lattice It was shown that welldeveloped SB exhibit large orientation spreads up to 35–40° with respect to the adjacent areas outside the band Most of these misorientations occur by rotations about the TD‖〈110〉 axis with significant further rotations about 〈112〉 poles This ultimately leads to the formation of the texture components whose occurrence cannot be explained by models homogeneous deformation
Keywords: