About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
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| Symposium
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Materials Kinetics and Mechanisms Under External Forcing-Driven Conditions
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| Presentation Title |
In Situ Experiments and Atomistic Modeling of Grain Boundary Deformation |
| Author(s) |
Ting Zhu |
| On-Site Speaker (Planned) |
Ting Zhu |
| Abstract Scope |
Recent advances in atomistic modeling and in situ experimental techniques have spurred growing efforts to combine these approaches to uncover grain boundary (GB) deformation mechanisms at the atomic scale. In this talk, I will present our recent studies that integrate in situ electron microscopy, nanomechanical testing, and atomistic modeling to investigate GB-mediated deformation processes. For example, by combining high-resolution transmission electron microscopy and atomistic simulations, we have revealed atomic-scale mechanisms of stress-driven GB sliding and structural transformation—occurring unexpectedly at room temperature. In another effort, we integrated in situ MEMS-based nanomechanical testing with atomistic reaction pathway simulations to identify rate-controlling GB processes that govern the experimentally measured activation volumes in nanocrystalline metals. This coupling of experiment and simulation allows direct observation and interpretation of atomic-scale dynamic processes, providing fundamental insights into how GBs influence plasticity in polycrystalline materials.
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| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Modeling and Simulation, Characterization |