Abstract
Small scale mechanical testing has many beneficial features including the ability to sample the properties of a single crystal over a wide temperature range. This manuscript presents the results of high temperature, in-situ scanning electron microscope microcompression testing of a single crystal of UO2. Observations indicated that the UO2 microcompression specimens deformed in a ductile fashion at temperatures of 350 °C and above. The slip traces on the micro-compression specimens after deformation appeared on the {100}1/2<110> system at the temperatures and orientation tested. Lastly, the Peierls stress of UO2 is calculated using the microcompression data.
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