Plastic Behavior and Microstructure Heterogeneity of an AA6063-T6 Aluminum Alloy Processed by Symmetric and Asymmetric Rolling

Rolling is one of the most employed industrial processes which can be used at multiple manufacturing stages, allowing different geometries such as plates, rods, profiles, billets, slabs, tubes, and seamless tubes to obtained. However, rolled products develop anisotropy due preferential orientation crystals in rolling direction. Thus, some process configurations processing parameters (e.g., thickness reduction per pass, deformation routes, roll diameters, strain rate) have been proposed deal with desired anisotropy. In this context, investigation evaluates compares effect symmetrical asymmetrical on an aluminum alloy sheet deformed until a 38% using passes. The displayed larger texture microstructure gradients across than one, manifested more grain refinement intense shear components close surfaces. terms plastic anisotropy, visco-plastic self-consistent model predicted higher average for symmetric asymmetric strong combination recrystallization components. Conversely, showed lower planar values increase fraction near surfaces, producing less overall rolling. additional component was mainly responsible material strengthening weakening after process. addition, produced refinement, decreased misorientation, dislocation densities as-received symmetrically materials. After rolling, heterogeneous profiles thickness. This gave rise size misorientation edges, gradients.