| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
|
| Presentation Title |
How Can We Benchmark Discrete Dislocation Dynamics? – A Comparison to Movies of Dislocation Structure Evolution Obtained from Dark-field X-ray Microscopy |
| Author(s) |
Felix T. Frankus, Yash Pachaury, Henning Friis Poulsen, Anter El-Azab, Grethe Winther |
| On-Site Speaker (Planned) |
Felix T. Frankus |
| Abstract Scope |
A physically informed understanding of plasticity is essential for accurate models. Discrete dislocation dynamics (DDD) offer a framework for studying plastic deformation on the microscopic length-scale. Validating these models with experimental data is however challenging, as dislocation structures in bulk specimens and their evolution under load are not directly accessible through standard imaging techniques. Recent developments on synchrotron-based dark-field X-ray microscopy (DFXM) have enabled the measurement of such structures in in-situ strained tensile specimens.
The talk will present recent results of dislocation interaction in in-situ strained aluminium tensile specimens. A workflow for extraction and identification of the observed dislocation structures and their interface to discrete dislocation dynamics simulations together with a comparison between the experimental results and DDD simulations will be shown. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Mechanical Properties, |