| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Phase-Field Simulations of Corrosion and Dealloying in Molten Salt |
| Author(s) |
Ellery Hendrix, W. Beck Andrews, Xiaoyang Liu, Yuxiang Peng, David Montiel, Yu-chen Karen Chen-Wiegart, Katsuyo Thornton |
| On-Site Speaker (Planned) |
Ellery Hendrix |
| Abstract Scope |
Molten salt nuclear reactors hold great potential as safe sources of clean energy; however, the corrosion of structural materials in contact with molten salt is a major challenge for the development of this technology. Additionally, the underlying phenomena which lead to different microstructures in different conditions are not well-understood. Phase-field modeling can simulate a variety of micro-scale phenomena which are present in alloy/molten salt systems, such as corrosion, dealloying, and coarsening. We develop a phase-field model to describe corrosion of a Ni-20Cr alloy in molten chloride salt based on X-ray tomography observations. Simulations are conducted to study the microstructural evolution resulting from the interplay between dealloying, surface corrosion, and grain boundary corrosion. By comparing the simulated and experimental microstructures, we identify the dominant mechanisms and associated parameters. We also use this technique to understand how the compositions of different alloys and salts affect corrosion parameters and the resulting morphologies. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Computational Materials Science & Engineering, Environmental Effects |