About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Phase-Field Modeling of Corrosion of Ni-Cr Alloys in Molten Salts |
| Author(s) |
W. Beck Andrews, Ellery Hendrix, Yuxiang Peng, Yu-chen Karen Chen-Wiegart, Katsuyo Thornton |
| On-Site Speaker (Planned) |
W. Beck Andrews |
| Abstract Scope |
Ni-Cr alloys are promising candidate materials for molten salt nuclear reactors due to their desirable mechanical properties and corrosion resistance at elevated temperatures. Corrosion behavior of Ni-Cr alloys exposed to molten salt depends on temperature, composition of the alloy, and the redox potential of the salt. Corrosion of Ni-Cr in molten salts typically proceeds via dealloying of Cr, which is less noble than Ni, but the observed morphological evolution varies significantly depending on temperature, composition of the alloy, and the redox potential of the salt (i.e., the presence of oxidative impurities). The mechanisms by which different conditions lead to different morphologies are not well understood. In this work, we apply phase-field models to explore how different dynamics, such as enhanced grain boundary corrosion, vacancy injection, and kinetic anisotropy, affect morphological evolution during corrosion. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Computational Materials Science & Engineering, Modeling and Simulation |