About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Developments in Advanced Nuclear Structural Materials
|
| Presentation Title |
Investigation of Electron Irradiation (1 MeV) Effects on Cr Precipitation in Fe-19at.%Cr alloy |
| Author(s) |
Benjamin Mahe, Olivier Tissot, Laurence Lunéville, David Siméone |
| On-Site Speaker (Planned) |
Benjamin Mahe |
| Abstract Scope |
Steels proposed as structural materials for future nuclear reactors are exposed to neutron fluxes which can alter their properties. In FeCr, used as model alloys, irradiation-induced chromium precipitation is a well-known embrittlement mechanism. The Fe-19at.%Cr alloy allows the study across a wide temperature range, while remaining within the demixing zone of chromium in iron.
Electron irradiation, which generates isolated point defects, is used to assess whether it accelerates Cr precipitation and to investigate the solubility limits predicted by phase diagram at low temperatures (≤673K).
Fe-19at.%Cr alloy was irradiated with electrons (1MeV) for both short (≤30min) and extended durations (5h), and analyzed by Atom Probe Tomography. The results are compared to the precipitation observed under thermal ageing conditions and literature.
Our findings contribute to a better understanding of irradiation effects on microstructural changes in Fe-Cr alloys and have implications for predicting the long-term stability of nuclear reactor materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Characterization, Phase Transformations |