Effects of Thermomechanical Processing on Texture Formation in Iron Aluminides

摘要

Iron aluminides of different compositions have been deformed at high temperatures by extrusion through a round and rectangular die, approximating tension and plane strain deformation, respectively. Depending on temperature and composition dynamic recrystallization takes place. Global and local textures have been measured by neutron and electron back-scatter diffraction (EBSD), respectively. The EBSD method allows the separation of deformation and recrystallization texture components. The development of the deformation textures is simulated with the relaxed constraints Taylor model. Moreover, the texture development is correlated with the microstructural evolution derived from EBSD mappings. Conclusions concerning the anisotropy of the elastic and plastic properties are drawn.