@article{2c156f812bd843209b5158f992d4cb90,
title = "Temperature Effects on Interdiffusion of Al and U-Mo under Irradiation",
abstract = "A high-energy Xe ion irradiation experiment was conducted to investigate the temperature dependence of interdiffusion in bilayer Al-UMo samples under irradiation. The amount of interdiffusion achieved at a fixed dose with the increase of temperature showed a clear transition at 175°C (with an estimated error in the range of ±10°C) from temperature-independent to temperature-dependent behavior. The activation energy derived from the curve of interdiffusion quantity vs. irradiation temperature is 0.77±0.16 eV. This information has been utilized to understand the temperature effect on the interdiffusion process that occurred at the interfaces of U-Mo particles and the Al matrix in U-Mo/Al dispersion fuels, whose magnitude significantly impacts the fuel's performance. Although this temperature effect was deemed important, it cannot be examined directly using in-pile irradiation data, as fuel temperatures cannot be measured in reactor irradiation and are highly correlated with fission rate and thermal conductivity evolution. To connect the knowledge accumulated from ion irradiation with in-pile irradiation data, simulation of a full-sized U-Mo/Al dispersion fuel plate irradiated in the FUTURE test in the BR2 reactor was performed with the Dispersion Analysis Research Tool (DART), a dispersion fuel performance code. DART is equipped with an interaction or interdiffusion layer (IL) growth correlation formulated to describe the temperature dependence of ion mixing results. The agreement between calculated and measured fuel meat constituent volume fractions and swelling data demonstrated that the temperature effect on in-pile Al-UMo interdiffusion is well captured with the correlation. In this case, the fitted activation energy is 0.70 eV. Considering the uncertainties associated with the ion irradiation data, the activation energy obtained from in-pile data fitting is in accord with that from ion irradiation results.",
keywords = "Al-UMo interdiffusion, fuel performance modeling, heavy ion irradiation, temperature effect",
author = "B. Ye and Y. Miao and J. Shi and D. Salvato and K. Mo and L. Jamison and A. Bergeron and Hofman, \{G. L.\} and A. Leenaers and A. Oaks and Yacout, \{A. M.\} and \{Van den Berghe\}, S. and W. Petry and Kim, \{Y. S.\}",
note = "Funding Information: This work was supported by the U.S. Department of Energy, National Nuclear Security Administration (NNSA), Office of Material Management and Minimization (NA-23) Reactor Conversion Program. Part of the electron microscopy was accomplished at Argonne National Laboratory at the IVEM-Tandem Facility, a U.S. Department of Energy Facility funded by the DOE Office of Nuclear Energy, operated under Contract No. DE-AC02-06CH11357 by UChicago Argonne, LLC. Some of the TEM characterization work were supported by the U.S. Department of Energy, Office of Nuclear Energy under DOE Idaho Operations Office Contract DE-AC07-05ID14517, as part of Advanced Test Reactor National Scientific User Facility (ATR NSUF) experiments. Preparation of the layered samples was supported by a combined grant (FRM1318) from the Bundesministerium f{\"u}r Bildung und Forschung (BMBF) and the Bayerisches Staatsministerium f{\"u}r Wissenschaft und Kunst (StMWK). The authors would also like to acknowledge the help of Matthew Hendricks and Ben Blomberg on the ATLAS irradiation. This research used the resources of Argonne National Laboratory's ATLAS facility, which is a DOE Office of Science User Facility. The isotope(s) used in this research were supplied by the United States Department of Energy Office of Science by the Isotope Program in the Office of Nuclear Physics. Funding Information: This work was supported by the U.S. Department of Energy, National Nuclear Security Administration (NNSA), Office of Material Management and Minimization (NA-23) Reactor Conversion Program. Part of the electron microscopy was accomplished at Argonne National Laboratory at the IVEM-Tandem Facility, a U.S. Department of Energy Facility funded by the DOE Office of Nuclear Energy, operated under Contract No. DE-AC02-06CH11357 by UChicago Argonne, LLC. Some of the TEM characterization work were supported by the U.S. Department of Energy, Office of Nuclear Energy under DOE Idaho Operations Office Contract DE-AC07-05ID14517, as part of Advanced Test Reactor National Scientific User Facility (ATR NSUF) experiments. Preparation of the layered samples was supported by a combined grant (FRM1318) from the Bundesministerium f{\"u}r Bildung und Forschung (BMBF) and the Bayerisches Staatsministerium f{\"u}r Wissenschaft und Kunst (StMWK). The authors would also like to acknowledge the help of Matthew Hendricks and Ben Blomberg on the ATLAS irradiation. This research used the resources of Argonne National Laboratory's ATLAS facility, which is a DOE Office of Science User Facility. The isotope(s) used in this research were supplied by the United States Department of Energy Office of Science by the Isotope Program in the Office of Nuclear Physics. Publisher Copyright: {\textcopyright} 2020",
year = "2021",
month = feb,
doi = "10.1016/j.jnucmat.2020.152684",
language = "English",
volume = "544",
journal = "Journal of Nuclear Materials",
issn = "0022-3115",
publisher = "Elsevier B.V.",
}