Flow stress and ductility of AA7075-T6 aluminum alloy at low deformation temperatures

▶ A constitutive description of the AA7075-T6 aluminum alloy has been formulated. ▶ Tests were conducted between 123 and 298 K, at constant and variable speeds. ▶ The description is a simplified form of the mechanical threshold stress model. ▶ The formulation separates the different contributions to the current flow stress. ▶ Changes in the ductility of the material are dictated by the changes in temperature.