About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Chemistry and Physics of Interfaces
|
| Presentation Title |
The Existence of Inertial Phenomena in Grain Boundary Kinetics |
| Author(s) |
Xinyuan Song, Chuang Deng |
| On-Site Speaker (Planned) |
Xinyuan Song |
| Abstract Scope |
Interfaces have long been considered massless boundaries. Consequently, the assumption of overdamped dynamics—where the interface responds immediately to an external driving force—has been widely applied in interfacial kinetic studies. However, challenging this classical assumption, we observed significant inertial effects in grain boundaries under high-frequency oscillating forces. Quantifying this result reveals that the effective mass of a grain boundary is approximately equivalent to a single layer of atoms participating in the migration. While this mass is small enough to be safely ignored under low-frequency external driving forces, such as grain boundary migration driven by shear stress or energy jumps, inertial phenomena become highly significant under high-frequency forces, such as grain boundary random walks induced by thermal fluctuations. Incorporating this inertial term into kinetic descriptions should yield more accurate models and refine how we understand and simulate interface migration. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Thin Films and Interfaces |