|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Accelerated Materials Evaluation for Nuclear Applications Utilizing Irradiation and Integrated Modeling
||Microstructural Changes and Corrosion of Proton-pre-irradiated Hastelloy N in FLiNaK Molten Salt
||Andres Morell-Pacheco, Lingfeng He, Ruchi Gakhar, Yachun Wang, Adam Gabriel, Lin Shao
|On-Site Speaker (Planned)
UNS N10003 (Hastelloy N) is a leading candidate for use as a structural material in molten salt reactors (MSRs). A complete understanding of the evolution of alloy UNS N10003 under diverse conditions, needed for commercial implementation of MSRs, has yet to be realized. Our work aims at understanding the coupling effect of radiation damage on the alloy’s corrosion sensitivity in fluoride salts. UNS N10003 was irradiated using 2.5 MeV protons to 0.25, 0.5, and 1.0 local dpa and subsequently exposed to molten lithium-sodium-potassium eutectic fluoride (FLiNaK) salt at 700°C for 500 hours within carbon crucibles in an argon atmosphere. Cross-sectional microstructural changes were characterized using focused ion beam (FIB) technique and scanning transmission electron microscopy (S/TEM) coupled with energy dispersive X-ray spectroscopy (EDS), electron energy loss spectroscopy (EELS) and precession electron diffraction (PED) capability.