| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Assessing the impact of molten halide salts on creep of structural alloys at 650°-750°C |
| Author(s) |
Rishi Pillai, Bruce A. Pint |
| On-Site Speaker (Planned) |
Rishi Pillai |
| Abstract Scope |
There is a critical lack of data on the mechanical behavior of candidate structural materials for advanced nuclear reactors under molten halide salt environments. The ongoing efforts to commercialize different molten salt reactor concepts can considerably benefit from quantitative information on the impact of molten halide salts on the engineering properties such as creep and fatigue strength of materials of interest. The present work assessed the impact of molten salt corrosion on the creep behavior of three alloys 316H, 617 and 709 at 650-750 °C. Creep tests were conducted in the fluoride (FLiNaK) and the chloride (NaCl-MgCl2) salts. The molten salt environment was shown to cause up to a 25-50% reduction in creep rupture lifetime for all alloys compared to air exposures. Microstructural characterization and physics-based corrosion and creep models were employed to gain some insights into the potential degradation mechanisms. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, High-Temperature Materials, Modeling and Simulation |