| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation and Transitions at Grain Boundaries VII
|
| Presentation Title |
On the Effect of Slip Transfer and Grain Boundary Sliding on the Deformation Mechanisms of FCC Polycrystals |
| Author(s) |
Eugenia Nieto, Sarra Haouala, Alberto Orozco-Caballero, Thomas R. Bieler, Javier Llorca |
| On-Site Speaker (Planned) |
Javier Llorca |
| Abstract Scope |
A strategy based on experiments and simulations is presented to ascertain the influence of slip transfer and grain boundary sliding on the deformation of FCC polycrystals. From the experimental viewpoint, thin foils of Al and Ni oligocrystals were prepared and analysed by EBSD to determine the grain orientation and the character of the grain boundaries. They were tested in tension and the occurrence (or not) of slip transfer across the different grain boundaries and gran boundary sliding was ascertained from the analysis of the slip traces in the SEM and HR-DIC.
In parallel, the mechanical behaviour of the oligocrystals was simulated with a dislocation-based crystal plasticity model that can take into account slip transfer/blocking and grain boundary sliding.
The analysis of the experimental results and of the numerical simulations provided a deeper understanding of the role of the grain boundaries on the deformation mechanisms of FCC polycrystals. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |