About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Defects and Interfaces: Modeling and Experiments
|
Presentation Title |
Dislocation - Interface Interactions: Slip Transmission, Interface Sliding, and Polycrystal Plasticity |
Author(s) |
David Joseph Srolovitz, Jinxin Yu, Jian Han, Alfonso H.W. Ngan |
On-Site Speaker (Planned) |
David Joseph Srolovitz |
Abstract Scope |
Dislocation-interface interactions dictate mechanical properties of polycrystalline materials through dislocation absorption, emission, reflection and interface sliding. We derive a mesoscale interface boundary condition to describe these, based on rigorous bicrystallography and Burgers vector reaction/conservation and built upon Burgers vector reaction kinetics (applicable to all interfaces in crystalline materials). We apply this approach to predict slip transfer for any crystalline interface and stress state; comparisons are made with widely-applied empirical methods. The results are directly applicable to many existing dislocation plasticity simulation methods. We apply such methods to evaluate the effects of specific interfaces on polycrystal plasticity and GB sliding. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Computational Materials Science & Engineering, |