| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Elucidating Microstructural Evolution Under Extreme Environments
|
| Presentation Title |
High-Dose Evolution of Radiation-Induced Segregation in an Austenitic Fe-Ni-Cr Alloy |
| Author(s) |
Daniele Fatto Offidani, Emmanuelle Marquis |
| On-Site Speaker (Planned) |
Daniele Fatto Offidani |
| Abstract Scope |
Radiation-induced segregation (RIS) is an important microstructural change that occurs at defects sinks during irradiation of alloys. RIS at grain boundaries (GBs) in model and commercial Fe-Ni-Cr alloys has been studied extensively at low and intermediate (0-10 dpa) doses, showing that the extremum concentrations measured at GBs saturate rapidly. However, the evolution of RIS in terms of the shape and magnitude of the RIS profiles at high doses remains unclear. Here, RIS at high-angle grain boundaries and the evolution of dislocation loops were quantified using transmission electron microscopy and energy dispersive spectroscopy in a Fe-Ni-Cr austenitic alloy that was ion-irradiated at high doses. We established that the RIS magnitude and the morphology of the segregation profiles in the model alloy evolve at doses higher than 15dpa. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Other, |