Article contents
Formation of brass-type shear bands and their influence on orientation changes of Cu-2%Al alloy {112}<111> single crystals
Published online by Cambridge University Press: 17 November 2003
Abstract
Single crystals of the low stacking fault energy Cu-2%Al alloy, with initial orientation {112}<111>, have been deformed by compression in a channel die at 77 and 293 K. Microstructural and microtextural aspects of the formed brass-type shear bands were analyzed. Experimental techniques included TEM, SEM, optical microscopy together with SEM/EBSD and TEM/CBED microtexture measurements. The crystals first rotate by slip, then transform their orientation by deformation twinning. As shear banding starts, a strong increase of intensities near the Goss {110}<100> position is observed, and this process is connected with the rotation of twin lamellae within shear bands. At the TEM scale a second weaker component is noticed. Outside the bands, the twin-matrix lamellae rotate differently and the material reorients to {111}<112>.
- Type
- Research Article
- Information
- Metallurgical Research & Technology , Volume 100 , Issue 9: Science et Génie des MatériauxHétérogénéités de déformation , September 2003 , pp. 797 - 805
- Copyright
- © La Revue de Métallurgie, 2003
- 1
- Cited by