| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Radiation Effects in Metals and Ceramics
|
| Presentation Title |
Advanced Electron Microscopy Characterization of Ion Radiation Damage in Bulk Metallic Glass and High Entropy Alloys |
| Author(s) |
Yang Yang, Qin Yu, Jun Ding, Ruopeng Zhang, Colin Ophus, Mark Asta, Robert O. Ritchie, Andrew Minor |
| On-Site Speaker (Planned) |
Yang Yang |
| Abstract Scope |
Bulk metallic glass (BMG) and high entropy alloys (HEAs) are structural materials with intriguing mechanical properties. While they have been proposed as candidate materials under irradiation environments, there is still a lack of systematic understanding of their response to radiation damage. For example, due to the limited range of ion radiation, it is difficult to perform traditional bulk-scale mechanical testing.
Here, we report advanced electron microscopy characterization of ion radiation damage in BMG and HEAs. The samples are irradiated by helium ion beam at different doses and ion energies. Quantitative in-situ TEM mechanical testing has been performed to unravel the modification of mechanical performance by helium ion radiation. Energy-filtered TEM (EF-TEM), Energy-dispersive X-ray (EDX) Spectroscopy and 4D-STEM are used to characterize the structural/chemical heterogeneity and the elastic strain before and after irradiation. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |