|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Materials and Fuels for the Current and Advanced Nuclear Reactors VII
||In-situ Elevated Temperature Micro-cantilever Testing of UO2
||David Frazer, Benjamin Shaffer, Pedro Peralta, Peter Hosemann
|On-Site Speaker (Planned)
The mechanical properties of UO2 are important to nuclear engineers in order to understand fuel performance during service. Obtaining accurate data of the deformation of single crystals at both room and elevated temperature is key to provide input parameters for modeling of fuel performance during operation and accident scenarios. Small-scale testing techniques like micro-cantilever testing allow in-situ mechanical testing that allows the observation of the deformation of the material and measure the mechanical properties. In addition, due to the size of the specimen, the test can fit in single grains allowing the measurement of single crystals. In our work, we perform in-situ SEM microcantilever testing of UO2 at room and elevated temperatures, with emphasis on creep and fracture behavior combined with subsequent TEM investigation to evaluate the deformation mechanisms. In addition, we utilize an innovative approach to enable these experiments to be performed using in-situ TEM at elevated temperature.
||Planned: Supplemental Proceedings volume