| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Bulk Metallic Glasses XVIII
|
| Presentation Title |
Non-destructive Probing of Internal Damage Processes in a Metallic Glass |
| Author(s) |
Amlan Das, Robert Maass |
| On-Site Speaker (Planned) |
Amlan Das |
| Abstract Scope |
Metallic Glasses (MGs) deform via a shear localization in the inhomogeneous serrated plastic regime. This shear localization occurs repeatedly and post-mortem analysis of strained but intact samples has shown that shear-band cavities of substantial size emerge on the shear plane. It remains unclear when these cavities form along the serrated stress-strain curve, but it is of fundamental importance for the determination of correct flow stresses. In order to trace shear-band cavity-formation as a function of strain, we conduct in-situ acoustic emission experiments coupled with high-energy x-ray tomography. This approach is based on the hypothesis that spectral and energy component of the emitted elastic waves during internal damage accumulation allow the discrimination between shear-band formation and cavity formation. The tomography data is used to scrutinize the finding obtained via the acoustic emission approach. |
| Proceedings Inclusion? |
Planned: |