Results of Recent Microstructural Characterization of Irradiated U-Mo Dispersion Fuels with Al Alloy Matrices that Contain Si

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RERTR U-Mo dispersion fuel plates are being developed for application in research reactors throughout the world. Of particular interest is the irradiation performance of U-Mo dispersion fuels with Si added to the Al matrix. Si is added to improve the performance of U-Mo dispersion fuels. Microstructural examinations have been performed on fuel plates with either Al-0.2Si or 4043 Al (~4.8% Si) alloy matrix in the as-fabricated and/or as-irradiated condition using optical metallography and/or scanning electron microscopy. Fuel plates with either matrix can have Si-rich layers around the U-7Mo particles after fabrication, and during irradiation these layers were observed to grow ... continued below

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D. D. Keiser, Jr.; Robinson, A. B.; Janney, D. E. & Jue, J. F. March 1, 2008.

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RERTR U-Mo dispersion fuel plates are being developed for application in research reactors throughout the world. Of particular interest is the irradiation performance of U-Mo dispersion fuels with Si added to the Al matrix. Si is added to improve the performance of U-Mo dispersion fuels. Microstructural examinations have been performed on fuel plates with either Al-0.2Si or 4043 Al (~4.8% Si) alloy matrix in the as-fabricated and/or as-irradiated condition using optical metallography and/or scanning electron microscopy. Fuel plates with either matrix can have Si-rich layers around the U-7Mo particles after fabrication, and during irradiation these layers were observed to grow in thickness and to become Si-deficient in some areas of the fuel plates. For the fuel plates with 4043 Al, this was observed in fuel plate areas that were exposed to very aggressive irradiation conditions.

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  • RRFM-2008 INTERNATIONAL MEETING ON RESEARCH REACTOR FUEL MANAGEMENT,Hamburg, Germany,03/02/2008,03/05/2008

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  • Report No.: INL/CON-08-13808
  • Grant Number: DE-AC07-99ID-13727
  • DOI: 10.2172/938453 | External Link
  • Office of Scientific & Technical Information Report Number: 928084
  • Archival Resource Key: ark:/67531/metadc902796

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  • March 1, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 7, 2016, 4:46 p.m.

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D. D. Keiser, Jr.; Robinson, A. B.; Janney, D. E. & Jue, J. F. Results of Recent Microstructural Characterization of Irradiated U-Mo Dispersion Fuels with Al Alloy Matrices that Contain Si, article, March 1, 2008; [Idaho Falls, Idaho]. (digital.library.unt.edu/ark:/67531/metadc902796/: accessed May 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.