About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials and Chemistry for Molten Salt Systems
|
Presentation Title |
Assessing Environmentally-Assisted Cracking of 316L in Molten FLiNaK |
Author(s) |
Xavier Quintana, Dustin Mangus, Jake Quincey, Julie Tucker, Samuel Briggs |
On-Site Speaker (Planned) |
Xavier Quintana |
Abstract Scope |
Fluoride molten salts have been targeted as a promising coolant for next generation reactors due to their favorable thermophysical properties, but present unique materials challenges primarily driven by the aggressive corrosion attack due to the reducing environment. Stress present in structural materials exacerbate degradation. Challenges with in-situ data collection mean data for this system is sparse and the degree of which stress accelerates degradation is not fully realized. Oregon State University’s Molten Salt Load Frame (MSLF) enables environmentally assisted cracking (EAC) tests to be conducted via slow strain rate and fatigue crack growth tests. Tests are conducted with 316L stainless steel. Samples are immersed in flowing, convection driven LiF-NaF-KF eutectic (FLiNaK) simulating MSR-like conditions and are subject to variable fatigue or constant strain rate until failure. Pre- and post-immersion characterization and fractography is conducted to identify failure modes and evaluate the effects of molten salt on 316L. |
Proceedings Inclusion? |
Planned: |
Keywords |
Other, Iron and Steel, Mechanical Properties |