| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation and Transitions at Grain Boundaries VII
|
| Presentation Title |
Bridging the Gap Between Grain Boundary Experiments and Simulations via Engineered Oligocrystals |
| Author(s) |
Zachary Cordero, Logan G Ware |
| On-Site Speaker (Planned) |
Zachary Cordero |
| Abstract Scope |
Simulations of grain boundary phenomena often consider highly idealized grain boundaries or grain boundary networks. By contrast, experimental investigations on grain boundaries typically use polycrystalline specimens with poorly controlled structures and textures. This disconnect makes it difficult to directly compare experiments and simulations to validate grain boundary structure-property relations. To overcome this challenge, we have developed a directional solidification technique for growing oligocrystals with precisely controlled 3D grain boundary networks. In our approach we tailor the texture by using multiple seed crystals and control the position and orientation of each individual grain boundary by manipulating heat transfer effects as well as the thermodynamic forces that act on the boundary during crystal growth. This talk will summarize this processing strategy, its underlying physical principles, and its application to a novel class of bi- and tricrystal geometries for probing unanswered questions related to shear-coupled grain boundary motion. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |