|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Mechanical Behavior and Degradation of Advanced Nuclear Fuel and Structural Materials
||Unraveling the Early Stage Ordering of Krypton Solid Bubbles in Molybdenum: A Multi-modal Study
||Ericmoore Jossou, Anton Schneider, Cheng Sun , Yongfeng Zhang, Shirish Chodankar, Dmytro Nykypanchuk, Jian Gan, Lynne Ecker, Simerjeet Gill
|On-Site Speaker (Planned)
Self-organization of defects, such as fission gas bubbles in nuclear fuel alloys can lead to higher capacity for fission gas storage and help mitigate swelling caused by fission gases in nuclear reactors. We report the physical mechanism of self-organization of Kr in Mo under ion implantation. The ion fluence and temperature-dependent formation of Kr solid bubble superlattice (SBS) in Mo was investigated using synchrotron-based small-angle x-ray scattering and transmission electron microscopy in combination with atomic kinetic Monte Carlo (AKMC) modeling. Early-stage self-organization of solid bubbles as a function of dose and temperature will be discussed. The mechanism of Kr SBS is compared with He bubble ordering in Mo matrix. AKMC simulations is used to correlates the binding energy of Kr with the mobility and the eventual stability of Kr SBS. Overall, our work sheds light on the formation mechanism of noble gas superlattice towards the development of radiation tolerant materials.
||Nuclear Materials, Other, Characterization