About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Computational Thermodynamics and Kinetics
|
| Presentation Title |
Dynamics of Interface Phase Evolution in Low-angle Grain Boundaries in Tungsten |
| Author(s) |
Daniel Moore, Enze Chen, Mark Asta, Rob Rudd, Fadi Abdeljawad, Timofey Frolov |
| On-Site Speaker (Planned) |
Daniel Moore |
| Abstract Scope |
Tungsten is a prime contender for plasma facing components due to its high melting temperature, radiation tolerance, and low sputtering yield. Despite tungsten’s favorable properties, the high-temperature structure and behavior of its grain boundaries remains poorly understood. Herein, we explore the high temperature structural behavior of the Σ41 low-angle twist boundary. We identify a structural spinodal decomposition in the GB plane at elevated temperature in which dislocation domains phase separate into regions with distinct dislocation structures. We track the coarsening of these domains and explore how the topology of the GB microstructure influences migration at a range of temperatures. These findings highlight the complex nature of GB phase transitions and their role in governing interface mobility, offering new insight into the performance of polycrystalline tungsten under extreme conditions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, Modeling and Simulation, Phase Transformations |