Cube Texture Formation in a Rectangular Die Extruded Al-Mg Alloy

摘要

To investigate the early stages of cube texture formation a commercial Al-1.3wt%Mg alloy with different initial textures has been extruded at temperatures between 20 and 500℃. X-ray texture measurements show that the cube component increases with temperature and depends on the initial texture. EBSD reveals that the stronger increase of the cube component in the samples with high initial cube texture extruded above 300℃ is due to the stabilization of the initial cube orientation rather than to recrystallization. Investigations of the cube bands show a wide spectrum of neighbour orientations and the presence of large angle grain boundaries. The hot extrusion texture can be simulated with the relaxed constraints Taylor model by taking into account the non-octahedral slip systems.