About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
The Impact of Radiation on the Corrosion of Structural Alloys by Fluoride Salts |
| Author(s) |
Michael R. Tonks, Thompson Igunma, Cole Evered, Kumar Sridharan, Adrien Couet |
| On-Site Speaker (Planned) |
Michael R. Tonks |
| Abstract Scope |
In this talk I will report on the outcome of our recently completed NEUP project focused on investigating the impact of radiation on the corrosion of structural alloys in molten salts and adding the radiation effects to our mesoscale model of fluoride salt corrosion. In this work, in situ proton irradiation and molten FLiNaK exposure of thin films was carried out for stainless steels and Ni-based alloys. We found that proton irradiation accelerated corrosion in both Fe- and Ni-based alloys. This accelerated corrosion occurred primarily at high-angle grain boundaries. It also occurred to a lesser extent within grains with specific crystal orientations. We have taken the insights gained from these experiments and added mechanisms for radiation enhanced corrosion to our MOOSE-based mesoscale model of molten salt corrosion. We have added accelerated diffusion and modified grain boundary defect segregation due to radiation and these mechanisms result in accelerated mass loss. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Computational Materials Science & Engineering, Environmental Effects |