Texture evolution of ultrafine grained Al-7075 alloy produced by ECAP

The aim of current research was to examine the texture of annealed Al-7075 alloy that develops during Equal channel angular pressing (ECAP) in different ECAP routes. After annealing heat treatment, the material was pressed up to 4 passes by route A and BC at room temperature. The effect of copper tube casing on the texture evolution was also investigated. The texture was studied by X-Ray diffractometer in ED-plane as well as TD-plane. The qualitative and quantitative analysis of the texture reveals that the texture of the first pass is relevant to initial texture, but by increasing pass number this dependency disappears and the texture is mainly relevant to processing route. The texture calculation by Labotex software shows that the results in both TD (z) and ED (x) planes are in good agreement and covering the specimens with copper tube causes a decrease in texture strength and microstructure inhomogeneity of the specimens.