@article{1f1295eb12384d5db9c3f960e5d0a736,
title = "The formation mechanism of the Zr rind in U-Zr fuels",
abstract = "The Zr-rich rind that forms at the fuel-cladding interface in U-Zr nuclear fuels has been known for many years, although it has never been explained. It acts as an effective diffusion barrier preventing the diffusion of fission product lanthanides to the cladding, but the Zr rind breaks down and does not remain intact throughout irradiations. The current study is the investigation of the Zr rind formed in U-10Zr (wt. %). A series of experiments varied the conditions to explore the effects of heat and force on the alloy. The samples were analyzed using scanning electron microscopy and transmission electron microscopy to determine the microstructural changes and phases present. Based on the results presented, a mechanism for the formation of the Zr rind is proposed along with the Zr rind structure. The Zr rind is the metastable face-centered cubic (FCC) Zr phase formed due to δ-UZr2 decomposing and subsequent diffusion of Zr to the interface when the sample is subjected to both a compressive force and heat. If either heat or force are removed from the experiment, the FCC Zr rind does not form.",
keywords = "FCC Zr, Metallic nuclear fuel, Zr rind",
author = "Benson, {Michael T.} and Tiankai Yao and Zelina, {Joshua N.} and Fei Teng and Daniel Murray and {Di Lemma}, Fidelma and Williams, {Walter J.} and Jinsuo Zhang and Weiqian Zhuo",
note = "Funding Information: This work was supported by the U.S. Department of Energy, Office of Nuclear Energy under DOE Idaho Operations Office Contract DE-AC07-05ID14517 and Laboratory Directed Research and Development, 19A39-100FP. Accordingly, the U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript or allow others to do so, for U.S. Government purposes. Funding Information: This work was supported by the U.S. Department of Energy, Office of Nuclear Energy under DOE Idaho Operations Office Contract DE-AC07-05ID14517 and Laboratory Directed Research and Development , 19A39-100FP . Accordingly, the U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript or allow others to do so, for U.S. Government purposes. Publisher Copyright: {\textcopyright} 2022",
year = "2022",
month = dec,
day = "15",
doi = "10.1016/j.jnucmat.2022.154057",
language = "English",
volume = "572",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier B.V.",
}