| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Materials Degradation in Extreme Environments: Novel In-Situ Measurements of Cracking in Molten Salt |
| Author(s) |
Rebecca Schaller, Ryan Katona, Kenneth Armijo |
| On-Site Speaker (Planned) |
Rebecca Schaller |
| Abstract Scope |
Safety and reliability of next-gen reactors, i.e. molten salt reactors (MSR), depends on materials performance and reliability in extreme environments, yet no in-situ, validated measurement techniques for stress corrosion cracking (SCC), one potential degradation mechanism, exist for these conditions. The combination of in-situ direct current potential drop (DCPD) crack growth rate determination will be applied to a horizontal mechanical load frame. Use of high temperature fittings and novel sample geometries will enable evaluation with a full in-situ SCC measurement capability in MSR environments. This presentation will explore experimental design and setup, initial validation, and measurement of crack growth rates (CGR) in structural alloys in-situ in extreme environment solutions (FLiNaK or other molten salt surrogate solutions). DCPD collected data will be presented and confirmed through post-test fractography analysis to confirm in-situ CGR determination.
SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. This document is SAND2024-08974A. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, Characterization, Iron and Steel |