| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Elucidating Microstructural Evolution Under Extreme Environments
|
| Presentation Title |
Effect of Mn and Co on Radiation-Induced Segregation in Austenitic Fe-Ni-Cr Alloys |
| Author(s) |
Daniele Fatto Offidani, Emmanuelle Marquis |
| On-Site Speaker (Planned) |
Daniele Fatto Offidani |
| Abstract Scope |
Multi-principal element alloys (MPEAs) have been proposed as potential structural material candidates for next-generation nuclear reactors because of their notable mechanical properties and environmental resistance. Due to their novelty, little is understood regarding the effects of irradiation on their microstructure. An area of particular interest is radiation-induced segregation (RIS) at grain boundaries. To better understand the role of specific alloying elements on RIS, we systematically quantified RIS at high-angle grain boundaries and loop microstructures in an ion-irradiated Fe-Ni-Cr alloy with or without Mn and Co additions as a function of dose using transmission electron microscopy and energy dispersive spectroscopy. The results show that adding these alloying elements in solid solution quantitatively and qualitatively reduces the amount and morphology of RIS at high doses compared to the base ternary alloy. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, High-Entropy Alloys, Other |