About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
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Interrelated Extremes in Materials Degradation for Fission and Fusion Environments
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| Presentation Title |
Integrating high-throughput ex-situ, and in-situ, corrosion testing to investigate irradiation effects on molten salt corrosion |
| Author(s) |
Adrien Couet, Kevin Gautier, Cole Evered, Michael Tonks, Dan Thoma, Kumar Sridharan, Claire Lavalette, Laure Martinelli |
| On-Site Speaker (Planned) |
Adrien Couet |
| Abstract Scope |
Understanding corrosion of structural materials in molten salt environments is essential for the development of advanced energy technologies such as molten salt reactors. In this study, we combine two complementary approaches to probe corrosion mechanisms and irradiation effects. First, a high-throughput screening of more than 100 pre-ion-irradiated CrFeMnNi high-entropy alloy compositions was conducted using a molten salt droplet test, with corrosion metrics analyzed via ICP-OES, GDOES, and SEM. These data informed a machine learning model to identify key compositional and thermodynamic drivers of corrosion resistance. Results are compared to a similar dataset on non-irradiated alloys. Second, in-situ experiments were performed on various alloys exposed to molten salt under simultaneous proton irradiation at 600 °C. 3D microscopy and spectroscopy revealed irradiation-enhanced dealloying and porosity evolution. By bridging the two approaches, we highlight mechanistic consistencies and irradiation effects, demonstrating the value of ML-guided high-throughput strategies in interpreting and complementing targeted in-situ studies |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, High-Entropy Alloys, Environmental Effects |