The evolution of deformation texture and microstructure in commercially pure Al (cp-Al) and two Al-Mg alloys (Al-4Mg and Al-6Mg) during cold rolling to a very large strain (true strain ε_t≈ 3.9) was investigated. The development of deformation texture in cp-Al, after rolling, can be considered as pure metal or Copper-type, which is characterised mainly by the presence of Cu {112}, Bs {110} and S {123} components. The deformation microstructure clearly indicates that deformation mechanism in this case remains slip dominated throughout the deformation range. In the Al-4Mg alloy, the initial slip mode of deformation is finally taken over by mechanism involving both slip and Copper-type shear bands, at higher deformation levels. In contrast, in the Al-6Mg alloy, the slip and twin mode of deformation in the initial stage is replaced by slip and Brasstype shear bands at higher deformation levels. Although a Copper-type deformation texture forms in the two Al-Mg alloys at the initial stage of deformation, there is a significant increase in the intensity of the Bs component and a noticeable decrease in the intensity of the Cu component at higher levels of deformation, particularly in the Al-6Mg alloy. This phenomenon indicates the possibility of transition of the deformation texture from Cu-type to Bs-type, which is concurrent with the addition of Mg. Using visco-plastic selfconsistent modelling, the evolution of deformation texture could be simulated for all three materials.
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