| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nanostructured Materials in Extreme Environments III
|
| Presentation Title |
Progress Toward High Strain Rate Nanoindentation |
| Author(s) |
Benoit Merle, Mohammed Tahir Abba |
| On-Site Speaker (Planned) |
Benoit Merle |
| Abstract Scope |
Nanoindentation is a popular technique for investigating nanostructured materials. Yet, constant strain rate nanoindentation is usually limited to strain rates ≤ 0.1 /s, which has long prevented investigating rapid deformation conditions, e.g. like those found during a shock or a collision. The limitation to 0.1 /s actually mostly derives from the plasticity error of the continuous stiffness measurements (CSM). It was overcome with a newly introduced evaluation method discarding the need for a measurement of the contact stiffness, which makes it possible to measure hardness values up to ca. 104 /s with a Berkovich indenter. A further step consists in swapping Berkovich for a spherical indenter, so as to capture the full high strain rate yield behavior of a sample at the nanoscale. The talk will discuss progress and current bottlenecks for implementing high strain rate nanoindentation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, |