About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior at the Nanoscale VIII
|
| Presentation Title |
A Mechanistic Framework Differentiating Nanoindentation-induced Plasticity and Fracture using Muscovite as a Model Layered System |
| Author(s) |
Henry Q. Afful, Anastasia G. Ilgen, Frank W. DelRio, Corinne E. Packard |
| On-Site Speaker (Planned) |
Corinne E. Packard |
| Abstract Scope |
During nanoindentation of layered materials, a plethora of deformation mechanisms manifest in the load-displacement data as discrete displacement bursts, whose origins are often difficult to isolate from indentation data alone. This study develops a mechanistic framework to classify nanoindentation displacement bursts (pop-ins) in layered materials/structures, enabling attribution of distinct pop-in populations to the responsible underlying deformation mechanisms. Using muscovite (a mica-group phyllosilicate) as a model system, we conducted nanoindentation experiments normal to the basal plane over a range of temperatures and extracted features from load-displacement data, including pop-in velocities and energies, to distinguish fracture from plastic deformation events.
Acknowledgement: SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Thin Films and Interfaces, Ceramics |