3D Crystal Plasticity Modelling of Complex Microstructures in Extruded Products

The current study relates to the modelling of plastic anisotropy in aluminium alloy AA6063-W using a rate-dependent crystal plasticity finite element approach. A virtual microstructure, in which grains are explicitly resolved, was first generated based on experimental data using a grain growth algorithm. The texture was obtained by sampling the experimental ODF. The microstructure was then meshed using three different methods and appropriate boundary conditions were used in order to simulate uniaxial tensile testing in different directions. The results obtained from the different meshes were finally compared with experimental true stress-true strain curves and discussed.