About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Towards Understanding Environmental Degradation of Ni and Fe Based Alloys in FLiNaK Salt With Tellurium |
| Author(s) |
Mohammad Umar Farooq Khan, Lesley Frame, Stephen Raiman |
| On-Site Speaker (Planned) |
Mohammad Umar Farooq Khan |
| Abstract Scope |
Post-operation examination from Molten Salt Reactor Experiment revealed surface cracks in salt-facing material, Alloy-N, with evidence of fission product Te in them. They ascribed cracking to the Te penetration. With new reactor designs proposed, they need qualified materials and it is important to determine their propensity for Te-led alloy degradation. Here, molten salt-based Te-led degradation in IN617 and SS316H, are investigated. SS316H was exposed to Te vapor whereas Alloy 617 was exposed to FLiNaK salt having upto 10wt.% metallic Te in separate but identical static test setups at 800 °C for 100 h. The tested samples were strained to failure for comparing mechanical properties. Influence of Te on the mechanical behavior due to environmental degradation are compared for the two alloys. The test samples were characterized via optical microscopy, scanning electron microscopy and transmission electron microscopy. This talk will present new insights on Te-led environmental degradation and associated corrosion mechanisms. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, Nuclear Materials, High-Temperature Materials |