| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Investigating the Combined Corrosion and Radiative Effects on 316SS and Welded Joints in Static FLiNaK Salt |
| Author(s) |
Nicholas John Borrego, Minghui Chen, Khalid Hattar, Eric Lang |
| On-Site Speaker (Planned) |
Nicholas John Borrego |
| Abstract Scope |
Eutectic LiF-NaF-KF (FLiNaK) is a proposed molten salt composition for use as a coolant in next generation nuclear reactors due to its high melting point and heat capacity. Its compatibility with structural materials has become well understood, however, corrosion of welds coupled with radiation damage remains largely unexplored. To test these conditions, several coupons of type 316L stainless steel were joined through laser conduction mode bead-on-plate welds and butt-welds. Additionally, several samples were sequentially irradiated with 2 MeV protons prior to corrosion testing. Samples were then exposed to static FLiNaK at 700ºC between 1 and 100 hours. Electron microscopy will elicit information of welded modifications, irradiation, and corrosion effects for each event independently and sequentially between the exposure conditions. 3D FIB tomography coupled with EDS offers information on elemental corrosion in the weld and heat-affected zones and S/TEM analysis offer information on nano-scale segregation and irradiation defects guiding corrosion dynamics. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, Iron and Steel, Nuclear Materials |