| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior Related to Interface Physics IV
|
| Presentation Title |
Simulating Plastic Flow in Bicrystals With a Discrete Dislocation Dynamics Framework |
| Author(s) |
Mujan N. Seif |
| On-Site Speaker (Planned) |
Mujan N. Seif |
| Abstract Scope |
Overcoming the strength-ductility trade-off is a grand challenge in materials science. To better design microstructures that utilize the positive attributes of both fine and coarse grains, it is crucial to consider micro-mechanisms operating at grain boundaries. To this end, we utilize a nodal discrete dislocation dynamics framework (DDD) to simulate plastic flow within a bcc iron bicrystal domain and impose boundary conditions to mimic the domain’s position within a polycrystal. We compute the resolved shear stress at the impenetrable boundary separating the two crystals as well as the distribution of stress within each crystal as a displacement is gradually applied. We go on to evaluate how this varies with crystal misorientation. The results emphasize the strength of DDD as a tool for modeling complex grain boundary interactions and as a powerful complement to classic experimental micromechanics techniques. |
| Proceedings Inclusion? |
Planned: |