| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior Related to Interface Physics IV
|
| Presentation Title |
Analyzing Plastic Flow in Polycrystalline Alloys From Atomistic to Microscale Perspectives |
| Author(s) |
Thanh Phan, Liming Xiong |
| On-Site Speaker (Planned) |
Thanh Phan |
| Abstract Scope |
To enhance material strength while maintaining ductility, introducing interfaces like grain boundaries (GBs), twin boundaries, or phase boundaries to resist dislocation motions is a common strategy. However, this often reduces ductility despite significantly strengthening the material. Recent strategies have been developed to address this trade-off and have shown experimental success. Traditional fully atomistic models can only handle small nanograins up to 10-20 nm due to length scale limitations. Our concurrent atomistic-continuum (CAC) approach, based on the principles of statistical mechanics, can manage grain sizes of hundreds of nanometers, combining long-range dislocation slip and atomically structured interfaces in one model. This presentation will cover our recent adaptive CAC development for studying microscale slip transfer across GBs and interfaces in polycrystalline structures. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Computational Materials Science & Engineering, |