About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Chemistry and Physics of Interfaces
|
| Presentation Title |
Unravelling the Atomic Mechanics of Dislocation Strengthening at Metal-Oxide Interfaces |
| Author(s) |
Jacob P. Tavenner, Garritt J Tucker |
| On-Site Speaker (Planned) |
Jacob P. Tavenner |
| Abstract Scope |
Improving the performance of metallic alloys through reinforcement with oxide particles is a strengthening mechanism found across a range of critical material systems. However, the specifics of dislocation interactions with such oxides and the ways in which interfacial variation plays a role in the relative effect of such strengthening has largely been difficult to ascertain. Recent developments in interatomic potentials have enabled simulation of the large-scale oxide-metal systems necessary to determine the atomic nature of such behaviors. Here, we demonstrate the application of such simulations in the nickel-nickel oxide system and investigate the variation in interfacial structure under edge-dislocation interaction. The per-atom mechanics of such interactions are outlined and compared across a variety of interfacial structures. Relative contributions of various regions of the oxide-metal interface on the corresponding dislocation strengthening behavior is quantified. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Thin Films and Interfaces, Mechanical Properties |