About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
In-Situ Testing of Stress Corrosion Cracking of Ni-Based Superalloys in Molten FLiNaK |
| Author(s) |
Isabelle Heintz, Zachary Harris |
| On-Site Speaker (Planned) |
Isabelle Heintz |
| Abstract Scope |
A shortage of experimental evidence connects fracture toughness of nickel-based superalloys to stress corrosion cracking (scc) mechanisms within a molten FLiNaK environment in literature. The objective of this work is to compare the scc in Haynes-244 and Hastelloy-N within molten FLiNaK, focusing on the novel in-situ fracture mechanics-based test method. Wedge open loading (WOL) C(T) specimens will be utilized with different static forces corresponding to respective stress intensities at the crack tip. These specimens will then be exposed to a 700℃ FLiNaK environment for various times. Crack blunting may become more apparent during the longer exposures causing crack arrest at lower stress intensities. The crack characteristics will be evaluated to examine the efficacy of this in-situ testing method. This work will determine the validity of the in-situ scc testing as well as provide appreciable scc susceptibility data into open the literature while also validating an in-situ testing method. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, |