About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Hume-Rothery Symposium: Interface Structure and Properties: Impact on Microstructure Evolution
|
| Presentation Title |
Predicting Plastic Slip Transfer across Interfaces in Crystals: A Scale-Bridging Mechanistic Approach |
| Author(s) |
Jian Han, Jinxin Yu, David J. Srolovitz, Alfonso H. W. Ngan |
| On-Site Speaker (Planned) |
Jian Han |
| Abstract Scope |
Dislocation-interface interactions, including dislocation absorption, transmission, reflection, and interface sliding, largely determine the mechanical behavior of polycrystalline materials. Current simulation approaches are highly empirical, lack physical mechanisms, and/or suffer from timescale limitations. We propose a unified mesoscale interface boundary condition based on Burgers vector conservation and reaction kinetics, applicable to arbitrary crystalline interfaces and slip systems. This framework bridges microscopic defect (dislocation/disconnection) mechanisms with continuum methods such as continuum dislocation dynamics (CDD). By incorporating bicrystallography, our approach predicts slip transfer across diverse interfaces under varying conditions, reconciling empirical observations with mechanistic insights. Validation via 2D CDD simulations confirms the model's physical validity, effectiveness, and ease of implementation. Our approach provides a robust tool for multiscale plasticity modeling. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Mechanical Properties, Other |