| About this Abstract |
| Meeting |
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Symposium
|
Materials in Nuclear Energy Systems (MiNES) 2021
|
| Presentation Title |
Three-dimensional Characterization of Pore Evolution in High-burnup U-Mo |
| Author(s) |
Alejandro Figueroa, Daniel Murray, Peter Kenesei, Maria A. Okuniewski |
| On-Site Speaker (Planned) |
Maria A. Okuniewski |
| Abstract Scope |
Low-enrichment monolithic uranium-molybdenum-based fuels are of interest due to their potential to replace high-performance research and test reactors in conjunction with global nonproliferation efforts. Swelling in uranium-molybdenum in monolithic and dispersion fuel applications undergo a two-part swelling behavior, with an initial linear swelling rate followed by a subsequent increase in swelling due to irradiation-induced grain refinement. Understanding the porosity development as a function of fission density in this increased swelling rate regime is critical to understand the swelling behavior properly. This work investigates four separate locations on an edge-on miniplates that experienced a burnup between 5-10E21 fissions/cc. Analyzing the porosity in three dimensions utilizing micro-computed tomography creates a better understanding of porosity development as a fission density and rate function. This understanding is crucial for mechanistic modeling of fuel swelling in this increased swelling regime. |
| Proceedings Inclusion? |
Undecided |