Shear Banding in Twinned Structures and Their Influence on Brass-Type Texture

Henryk Paul; Adam Morawiec; Emmanuel Bouzy; Jean-Jacques Fundenberger; Andrzej Piątkowski

doi:10.4028/www.scientific.net/MSF.495-497.1067

Paper Titles

Latent Hardening in Copper and Copper Alloys
p.1043

Analysis of Intragranular Misorientation Related to Deformation in an Al-Mg-Mn Alloy
p.1049

Evolution of Internal Stresses during the Plastic Deformation of IF Steel and Their Correlation with Crystal Orientation
p.1055

Survival of Goss Grains during Cold Rolling of a Silicon Steel Single Crystal
p.1061

Shear Banding in Twinned Structures and Their Influence on Brass-Type Texture
p.1067

A Direct Method for Determining the Orientation-Dependent Lattice Strain Distribution Function from Diffraction Strain Pole Figures
p.1073

Texture, Twinning and Uniform Elongation of Wrought Magnesium
p.1079

Origin of the Deformation Microstructure in IF Steel after Medium Cold Rolling Reductions
p.1085

A Texture Based Model for Polycrystal Plasticity
p.1091

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Shear Banding in Twinned Structures and Their Influence on Brass-Type Texture

Abstract:

The local crystallography within shear bands (SB) has been examined in a single crystal of {112}<111> orientation of pure copper deformed at 77K by channel-die compression to strains of about 1. Setting up a system for making high-resolution orientation maps using transmission electron microscopy (TEM) has opened new advantageous circumstances for the analysis of orientation changes within SB. This method with spatial resolution higher than 10nm allows the examination of microstructure images composed of nanoscale subcells forming SB. It has been found that for well-developed shear bands, a crystal lattice rotation about <112> direction tends to dominate and this process is usually accompanied by activation of new slip systems. The present work shows that despite the plane strain deformation mode, the mechanism of lattice rotation within emerging SBs may lead to Goss and Brass texture components.