Texture Evolution of Magnesium Single Crystals Deformed by High-Pressure Torsion
Single crystals of technical purity Magnesium (99.8 wt.%) of initial orientations [ ] 2 1 10 and [ ] 2 2 11 were subjected to HPT deformation at room temperature up to strains of 10. The microstructural evolution has been analyzed by X-ray microtexture investigations and by in-situ stress-strain measurements. The results can be described in terms of shear arising from HPT deformation and - with higher strains - in terms of recrystallization. In crystals with hard orientation[ ] 2 2 11 , these features occur at smaller strains than in crystals with soft orientation [ ] 2 1 10 , i.e. with higher symmetry. In general, the observed textures and strength variations are much stronger than those reported for fcc HPT deformed metals.
Yuri Estrin and Hans Jürgen Maier
B. J. Bonarski et al., "Texture Evolution of Magnesium Single Crystals Deformed by High-Pressure Torsion ", Materials Science Forum, Vols. 584-586, pp. 263-268, 2008