|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Coupling Experiments and Modeling to Understand Plasticity and Failure
||Grain-scale Investigations of Deformation Heterogeneities in Aluminum Alloys
||Baran Güler, Tuncay Yalçınkaya, Mert Efe
|On-Site Speaker (Planned)
Compared to highly formable low-carbon steels, aluminum alloys may exhibit localized deformation, which have negative implications on the macroscale mechanical and forming behavior. It is important to capture these localizations at the microstructure scale to understand their origins and control their effects on the failure. In this work, meso-scale forming behavior of two aluminum alloys (5xxx and 6xxx) is investigated at large strains and various strain paths. The effects of initial texture, local grain misorientation and precipitates on the strain localizations are established together with the failure mechanisms responsible from the fracture. The results for aluminum are compared with the experiments in DC-04 steel exhibiting uniform deformation at the microstructure scale. Finally, the unique deformation and failure mechanisms of the aluminum are incorporated to a crystal plasticity finite element model to realistically represent the mechanical behavior and determine the conditions leading to uniform deformation.
||Planned: Supplemental Proceedings volume