| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation and Transitions at Grain Boundaries VII
|
| Presentation Title |
Characterization and Modeling of the Microstructure-scale Strain Distributions in an Aluminum Alloy Under Multiple Strain Paths |
| Author(s) |
Baran Guler, Ulke Simsek, Tuncay Yalcinkaya, Mert Efe |
| On-Site Speaker (Planned) |
Mert Efe |
| Abstract Scope |
Aluminum alloys exhibit localized deformation at the microstructure scale, which may have negative implications on the macroscale mechanical and forming behavior. In this work, micro- and meso-scale deformation behavior of a 6061-T6 aluminum alloy is investigated under large strains (>0.1) and various strain paths (uniaxial vs biaxial). While the strain localizes mostly to the grain boundaries under uniaxial tension, it is possible to observe localizations to both grain interiors and boundaries under biaxial tension. Grain size and orientation have considerable effects on the strain distribution, yet the effect of precipitates is minimal. When the strain maps at large field of views (100+ grains) are compared with the classical CPFEM simulations, there is little success in capturing the localizations. This is also a common problem identified in the literature and a non-local, strain-gradient CPFEM approach is utilized in this study for a far better match between the experiments and simulations. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |