About this Abstract |
| Meeting |
Materials in Nuclear Energy Systems (MiNES) 2025
|
| Symposium
|
Materials in Nuclear Energy Systems (MiNES) 2025
|
| Presentation Title |
Influence of Mn and Co addition on Radiation-Induced Segregation at Grain Boundaries in Austenitic Multi-Principal Element Alloys |
| Author(s) |
Daniele Fatto Offidani, Emmanuelle Marquis |
| On-Site Speaker (Planned) |
Daniele Fatto Offidani |
| Abstract Scope |
Austenitic multi-principal element alloys (MPEAs) are promising for nuclear applications due to their enhanced mechanical strength and corrosion resistance. However, their performance can be influenced by radiation-induced non-equilibrium phenomena such as radiation-induced segregation (RIS). In this study, we explore the effects of Mn and Co additions on RIS behavior at grain boundaries in Fe-Ni-Cr based austenitic alloys. To this end, we systematically characterized the chemical composition changes at grain boundaries, dislocation loops, and grain interiors in three model alloys using transmission electron microscopy and energy dispersive spectroscopy over a range of irradiation doses. The incorporation of Mn and Co alters the evolution of the bulk of the material during irradiation, which in turn impacts the overall segregation behavior, affecting both the magnitude and morphology of segregation profiles compared to the base Fe-Ni-Cr alloy. |
| Proceedings Inclusion? |
Undecided |