About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
In Tribute to Robert Wagoner: A Pioneer in Metal Forming and Constitutive Modeling
|
| Presentation Title |
The Role of Dislocation-Plasticity in Nano-Structural Metals |
| Author(s) |
Ill Ryu |
| On-Site Speaker (Planned) |
Ill Ryu |
| Abstract Scope |
Nano-structural metals can exploit the combination of resilient structure with size-dependent enhanced properties at nanoscale to achieve exceptional mechanical performance. Understanding fundamental deformation mechanisms in these noble materials requires capturing both microstructure evolution driven by defects and corresponding macroscopic mechanical response. In this talk, mechanical behaviors of nano-structural metals will be discussed, addressing the role of dislocation plasticity. Our model shows architected structures could exhibit increasing strength with decreasing unit cell size, which agrees with experimental observations. Closer examination at the dislocation microstructure shows plasticity is localized at the structures’ nodes due to high stress concentration. In addition, a new computational design guidelines for enhancing mechanical properties of metal alloy will be presented especially for nano-structural metals containing various defects such as nanoprecipitates, different phases, and nanovoids. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Modeling and Simulation, Computational Materials Science & Engineering |