| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Microstructural, Mechanical, and Chemical Behavior of Solid Nuclear Fuel and Fuel-Cladding Interface II
|
| Presentation Title |
Advanced Characterization of Irradiated FAST U-10Zr Rodlets Using Transmission Electron Microscopy and Atom Probe Tomography |
| Author(s) |
Sobhan Patnaik, Nicole Rodriguez Perez, Boone Beausoleil, Mukesh Bachhav, Tiankai Yao, Luca Capriotti |
| On-Site Speaker (Planned) |
Sobhan Patnaik |
| Abstract Scope |
Fission Accelerated Steady State Testing (FAST) experiments have been developed to generate prototypic temperature conditions during steady state irradiations of scaled geometric fuel pins. This approach helps to attain higher burnups at a much faster rate than traditional irradiation tests. Primarily FAST experiments aim to evaluate effects of accelerated irradiation via control rodlets and advanced metallic fuels for sodium-cooled fast reactors (SFRs). Based on post irradiation examinations and SEM-EDS analysis of the solid control rodlet (U-10Zr, 3.9% FIMA, HT9 clad), TEM lamellae and APT tips will be constructed from bulk, periphery and fuel-clad interface for further advanced characterization to investigate microstructure of the rodlets focusing on potential redistribution zones and pore structure and constituent distribution within the rodlet. TEM will help understand the crystallographic structure of the presumed α-Uranium and δ-UZr2 phases. APT will help in understanding radial burnup variations within redistribution zones and the decomposition of the presumed phases. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Characterization, Other |