Mechanical behavior and texture evolution of aluminum alloys subjected to strain path changes: Experiments and modeling

Abstract

The mechanical responses and crystallographic texture evolution of four representative aluminum alloy sheets (2xxx, 5xxx, 6xxx and 7xxx series), commonly used in the transportation industry, are studied under reverse shear loading in this work. The monotonic and forward-reverse simple shear tests are carried out to obtain the stress-strain response. The initial and after-deformation crystallographic texture are experimentally measured. The deformations are simulated using a dislocation theory-related hardening model incorporated in the Visco-Plastic Self-Consistent (VPSC) framework. The simulation results are in good agreement with the experiments in both the mechanical response and texture evolution. Furthermore, the changes of texture components during shear and reverse shear deformation are contrastively discussed as well as the influence of initial texture on the evolution. The cube component, as the primary initial orientation, transforms into other orientations as the applied shear deformation progresses. The rate of change is dependent on the initial texture intensity. Although the loading direction reverses once, the intensity variation of the orientation components showed two inflection points.