About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Vacancy Engineering in Metals and Alloys
|
| Presentation Title |
Quantifying Irradiation Damage with 4D-STEM |
| Author(s) |
Andrew M. Minor, Dongye Liu, Sean Mills |
| On-Site Speaker (Planned) |
Andrew M. Minor |
| Abstract Scope |
Nanoscale irradiation damage in materials such as vacancies, bubbles, voids, black spot damage and small radiation loops can be notoriously difficult to directly image, and even more difficult to accurately quantify. Often the strain fields or structures themselves overlap, even in thin foils used for electron microscopy. This talk will describe our recent work using 4D-STEM (nanobeam electron diffraction imaging) to quantify irradiation defects. We will discuss the pros and cons of 4D-STEM in comparison to well-established electron microscopy techniques (HRSTEM, BF/DF) for imaging and quantifying nanoscale defects in irradiated materials. Examples will be provided from irradiated pure metals such as Au, Fe, and Cr, as well as the Ni-Cr alloy system where irradiation is coupled with molten salt corrosion. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Nuclear Materials, Environmental Effects |