| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Embrittlement of Ni and Fe based Alloys in Te- containing FLiNaK Salt |
| Author(s) |
Mohammad Umar Farooq Khan, Lesley D. Frame, Stephen S. Raiman |
| On-Site Speaker (Planned) |
Mohammad Umar Farooq Khan |
| Abstract Scope |
Post-operation examination of materials from the Molten Salt Reactor Experiment, revealed surface cracks in salt-facing material, Alloy-N. The cracking was ascribed to embrittlement caused by the fission product Tellurium(Te) penetrating through the grain boundaries. Newer proposed molten salt reactor designs employ new materials, and it is important to determine their propensity for embrittlement. For this work, molten salt-based Te-embrittlement in alloy 617(an ASME code approved material) and SS316H, are investigated. Both IN617 and SS316H were exposed to FLiNaK salt up to 0.1wt.% metallic Te in separate but identical static test setups at 800°C for 100h. Samples were also strained to failure to compare the mechanical properties after the exposure. Influence of Tellurium on the mechanical behavior due to embrittlement will be compared for the two alloys. The test samples were characterized via optical microscopy and scanning electron microscopy. This talk will present new data on Te-embrittlement and associated corrosion mechanisms. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, High-Temperature Materials, |