| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Introducing Damage Gradient in Stainless Steel 316H by 2 MeV Proton Irradiation and Mapping of Corrosion Susceptibility in FLiNaK |
| Author(s) |
Michenna Allen, Zhihan Hu, Kenneth Cooper, Kyle Williams, Rijul Chauhan, Lin Shao |
| On-Site Speaker (Planned) |
Michenna Allen |
| Abstract Scope |
Understanding the effect of radiation damage on the corrosion of molten salt reactor (MSR) structural materials is important for MSR deployment. In the present study, stainless steel 316H was irradiated by a 2 MeV proton beam to different damage levels at 360°C, then immersed in FLiNaK salt at 700°C for 100 hours. The proton irradiation was performed with gradually increasing slit width, producing a damage gradient on the sample in discrete values of 0, 0.2, 0.4, 0.6, and 0.8 displacements per atom (dpa). With this high-throughput approach, the effect of radiation damage on corrosion behavior can be studied with minimized uncertainty. After the corrosion testing, the sample was cut and cross-sectionally polished. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) mapping were performed to compare Cr dissolution, cracking morphology, and elemental segregations, with an effort to link these to cracking susceptibility. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Environmental Effects, |