Role of solute atmosphere on the texture formation of Al-Mg solid solution during high-temperature uniaxial compression deformation

Uniaxial compression tests are conducted on Al-5 mass% Mg and Al-10 mass% Mg alloys under various amounts of strain at 673K and 723K with a final strain rate of 5.0×10^-4s^-1. The results of these two kinds of alloys are compared with the results on Al-3 mass% Mg alloy, in order to clarify the mechanism of texture change from {011} to {001} during high temperature compression deformation. High temperature yielding phenomena are observed at all deformation conditions. Texture examination elucidates that fiber textures are constructed in all the deformation conditions. {911} (compression plane) texture developed with an increase in strain. Increasing Mg concentration results in the earlier development of {001} texture. It is concluded that development of {001} texture is attributed to the orientation stability and low stored energy of {001} orientation during deformation