About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior at the Nanoscale VIII
|
| Presentation Title |
Shear and compressive molecular dynamics simulations of copper columnar nanotwins |
| Author(s) |
Akarsh Verma, Nitin Kishore Rawat, Ethan Cluff, Gregory B Thompson, Eric R. Homer |
| On-Site Speaker (Planned) |
Eric R. Homer |
| Abstract Scope |
Recent experiments involving cryogenic indentation of copper with columnar nanotwins showed an increased loss of twins when the columns of nanotwins were bent over as compared with direct compression. It was theorized that once they bent over, they experienced shear that induced the loss of twins. This presentation examines molecular dynamics simulations designed to mimic the different loading conditions. When subjected to shear, the twin boundaries migrate while they remain static when loaded under compression. Furthermore, as in the experiments, the loss of twins is higher at cryogenic temperatures than room temperatures. The mechanisms for the evolution are examined and discussed. |
| Proceedings Inclusion? |
Planned: |