About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Critical Role of Alloy Chemistry in Accelerating Creep Rupture in Molten Salts |
| Author(s) |
Rishi Pillai, Severine Cambier, Tracie Lowe |
| On-Site Speaker (Planned) |
Rishi Pillai |
| Abstract Scope |
Quantitative information on the impact of molten halide salts on the engineering properties such as creep and fatigue strength of materials is currently lacking. The present work assessed the role of molten salt corrosion on the creep behavior of three alloys 316H, 617 and 709 at 650-750°C. Creep tests were conducted in fluoride (FLiNaK) and chloride (NaCl-MgCl2) salts. The molten salt environments caused a 25-50% reduction in creep rupture lifetime compared to exposures in air and ultra-high purity Ar. Physics-based corrosion and creep models were employed to gain some insights into the critical role of alloy chemistry in governing degradation mechanisms. The corrosion induced changes in the alloy subsurface were correlated to the accelerated creep rupture in molten salts. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Nuclear Materials, Environmental Effects |