| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
| Presentation Title |
Recent Progress on Environmentally Assisted Cracking in Molten Salts: Fission Products and Other Nuisances |
| Author(s) |
Stephen Raiman, Muhammad Umar Farooq Khan, Elise Shauf, Lauryn Reyes, Ryan Gordon |
| On-Site Speaker (Planned) |
Stephen Raiman |
| Abstract Scope |
Environmentally assisted cracking has been observed on salt-facing alloys since it was first observed during post-irradiation examination of the Molten Salt Reactor Experiment (MSRE). The observed cracking on the surfaces of salt-facing surfaces was attributed to infiltration of tellurium, a fission product.
For future molten salt reactor (MSR) designs, it is important to know if tellurium or other fission products will lead to embrittlement and cracking of materials proposed for salt facing components. For this work, we present recent work focused on understanding the behavior of candidate salt-facing structural alloys in molten salts containing fission products. Candidate materials including 316H stainless steel and alloy 617 were exposed to molten fluoride and chloride salts with tellurium, then subjected to mechanical testing. Fission product exposed materials lost strength and ductility when compared to baseline. This work discusses susceptibility of commonly proposed MSR structural materials to tellurium cracking, and potential mitigation steps. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, High-Temperature Materials, |