| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior of Nuclear Reactor Materials and Components IV
|
| Presentation Title |
Micro-Scale Depth-Resolved Elastic and Photo-Elastic Inhomogeneities in Swift Heavy Ion Irradiated Spinel |
| Author(s) |
Zhandos Utegulov, Vladimir Bessonov, Kairolla Sekerbayev, Azat Abdullaev, Vladimir Skuratov, Jacques O'Connell |
| On-Site Speaker (Planned) |
Zhandos Utegulov |
| Abstract Scope |
MgAl2O4 spinel is a promising ceramic candidate for inert matrix fuels in the next generation nuclear reactors. However, to what extent its mechanical properties are tolerant to swift heavy ion-based fission products, is unknown. Photolimunescence micro-spectral peak intensities revealed a sharp color center-driven emission enhancement at a depth where the highest radiation-induced nuclear displacement damage is expected. On the other hand, the spatial profiling of compressional and shear acoustic wave velocities, probed by the Brillouin light scattering micro-spectroscopy, revealed a close correlation with depth-dependent electron energy losses. With the rise of ion fluence there is a general decrease in the speed of sound, and therefore in the elastic properties. However, the irradiated spinel structure tends to get stiffer at depths approaching maximum nuclear damage. Maximum losses in photo-elastic property are scaled with those in ionization energy, variations in refractive index and lattice swelling, especially with the increase of irradiation fluence. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Nuclear Materials, Ceramics |