| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Tackling Metallic Structural Materials Challenges for Advanced Nuclear Reactors
|
| Presentation Title |
Embrittlement of Ni and Fe Based Alloys in Te- Containing Fluoride Salts |
| Author(s) |
Mohammad Umar Farooq Khan, Stephen S. Raiman, Lesley D. Frame |
| 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, components. For newer molten salt reactor designs utilizing ASME code approved materials, it is important to test the propensity of embrittlement through grain boundaries in them due to fission product tellurium (Te). This study investigates Te embrittlement in alloy 617 and SS316H, both separately subjected to FLiNaK salt containing varying concentrations of metallic Te up to 10 wt.% at 800°C for 100 hours. Mechanical properties post-exposure is compared after straining to failure, and characterization via optical microscopy, scanning electron microscopy and transmission electron microscopy is performed to elucidate influence of Te on the embrittlement and associated corrosion mechanisms. This talk will present new data on Te-embrittlement and influence for future molten salt reactor material considerations. |