@article{d2f43b14f3e0407c8707e9a18705cd1f,
title = "In-Situ Transmission Electron Microscopy Microcantilever and Nanoindentation Testing of UO2",
abstract = "Uranium dioxide is the standard fuel of the current nuclear reactor fleet and a potential fuel for future generation IV reactors. Enhancing the performance of uranium dioxide fuels necessitates a broader understanding of the fuel pellet/cladding mechanical interaction; this can be achieved through further study of the mechanical behavior of UO2. Small-scale mechanical testing can be used to evaluate the mechanical properties of materials while reducing the total volume of material required for testing. This is beneficial when studying nuclear materials because small test samples reduce the dose to the researcher and can reduce costs by permitting mechanical testing to be performed outside of hot cells. In this work in situ transmission electron microscopy microcantilever and nanoindentation testing was used to evaluate the deformation of UO2 at room temperature. The in situ testing was also used along with an innovative helium implantation technique to evaluate the effect of helium bubbles on the low temperature deformation of UO2. It was found that, under similar testing conditions, the unimplanted material formed a single critical crack while material containing helium bubbles at a dose of 1018 ions/cm2 responded with a large number of nanocracks, enhancing the toughness of the material.",
author = "D. Frazer and B. Shaffer and P. Peralta and P. Hosemann",
note = "Funding Information: This work was partially performed at the National Center for Electron Microscopy, which is supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The authors want to thank the DOE-NEUP program for funding and supporting this work under Grant DE-NE-0000670000. This work was supported by the U.S. Department of Energy, Office of Nuclear Energy under DOE Idaho Operations Office Contract DE-AC07-051D14517 as part of a Nuclear Science User Facilities experiment. The authors would like to thank nuclear science user facilities (NSUF) rapid turnaround experiments (RTE) for funding this research under award number 1165. Funding Information: This work was partially performed at the National Center for Electron Microscopy, which is supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The authors want to thank the DOE-NEUP program for funding and supporting this work under Grant DE-NE-0000670000. This work was supported by the U.S. Department of Energy, Office of Nuclear Energy under DOE Idaho Operations Office Contract DE-AC07-051D14517 as part of a Nuclear Science User Facilities experiment. The authors would like to thank nuclear science user facilities (NSUF) rapid turnaround experiments (RTE) for funding this research under award number 1165. Publisher Copyright: {\textcopyright} 2020, The Minerals, Metals & Materials Society.",
year = "2020",
month = aug,
day = "1",
doi = "10.1007/s11837-020-04102-x",
language = "English (US)",
volume = "72",
pages = "3028--3036",
journal = "Journal of Metals",
issn = "1047-4838",
publisher = "Minerals, Metals and Materials Society",
number = "8",
}