Texture selection mechanisms in uniaxially extruded magnesium alloys
Received 16 November 2009; received in revised form 7 January 2010; accepted 11 January 2010. published online 18 January 2010.
Abstract
Extrusion textures in magnesium alloys are of high interest due to their influence on yield asymmetry. The present work describes three mechanisms of texture selection that may play a role during extrusion. These mechanisms involve localized differences in deformation at the grain level, the change in local environment experienced by grain boundary bulges and shear banding. The work employs visco-plastic crystal plasticity and electron backscattering diffraction.