About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Four-Dimensional Scanning Transmission Electron Microscopy (4D STEM) for Quantitative Materials Characterization
|
| Presentation Title |
Probing Structure Evolution in Metallic Glasses during Mechanical deformation with 5D STEM |
| Author(s) |
Zhiyu Zhang, Kun Luo, Qi An, Yang Yang |
| On-Site Speaker (Planned) |
Zhiyu Zhang |
| Abstract Scope |
Four-dimensional scanning transmission electron microscopy (4D STEM) is an advanced characterization technique capable of acquiring rich structural information from materials and enabling a wide range of post-acquisition analyses tailored to specific research needs. In-situ 4D STEM, or 5D STEM, experiments further introduce time as a fifth dimension in the dataset, allowing direct observation of dynamic processes and providing deeper insight into material behavior during external stimuli. In this work, we perform in situ mechanical testing experiments to investigate the deformation behavior of metallic glasses. By combining mechanical testing with 4D STEM, we are able to track the evolution of local strain and free volume evolution throughout the deformation process. This approach enables us to reveal the underlying deformation mechanisms of metallic glasses and provides new insights into the relationship between nanoscale structural evolution and macroscopic mechanical response. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, |