| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Towards understanding 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 after 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 Te embrittlement. Here, molten salt-based Te embrittlement in IN617 and SS316H, are investigated. Both alloys were exposed to FLiNaK salt upto 1 wt.% metallic Te in separate but identical static test setups at 800 °C for 100 h. The tested samples were strained to failure for comparing post exposure mechanical properties. Influence of Te on the mechanical behavior due to embrittlement will be compared for the two alloys. The test samples were characterized via optical microscopy, scanning electron microscopy, transmission electron microscopy and atom probe tomography. This talk will present new data on Te-embrittlement and associated corrosion mechanisms. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Environmental Effects, Mechanical Properties |