| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Grain Boundaries and Interfaces: Metastability, Disorder, and Non-Equilibrium Behavior
|
| Presentation Title |
A Framework for Continuum Modeling of Dislocation-grain Boundary Interactions in Polycrystalline Metals |
| Author(s) |
Subhendu Chakraborty, Abigail Hunter, Darby J. Luscher |
| On-Site Speaker (Planned) |
Subhendu Chakraborty |
| Abstract Scope |
Grain Boundary Engineering (GBE) is one the most important techniques to enhance the structural properties of polycrystalline materials. For better understanding of the mechanisms behind GBE, we need an appropriate continuum model to study the effect of grain boundary (GB) structure on the evolution of the dislocations within and across the grains.
In this presentation we propose a continuum crystal plasticity model that incorporates the nucleation, annihilation and transmission of dislocations across the grain boundary. A novel modeling approach is introduced to represent the influence of GB characteristics (e.g. misorientation angle) on the resistance of the GB against dislocation transmission. Results will be provided to demonstrate the influence of GB structure on the evolution of plastic slip in a polycrystal microstructure. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Mechanical Properties, |