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Laser and Pressure Resistance Weld of Thin-Wall Cladding for LWR Accident-Tolerant Fuels

  • Accident Tolerant Nuclear Fuels and Cladding Materials
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Abstract

FeCrAl alloy with typical composition of approximately Fe-15Cr-5Al is considered a primary candidate cladding material for light water reactor accident-tolerant fuel because of its superior resistance to oxidation in high-temperature steam compared with Zircaloy cladding. Thin-walled FeCrAl cladding at 350 μm wall thickness is required, and techniques for joining endplug to cladding need to be developed. Fusion-based laser weld and solid-state joining with pressure resistance weld were investigated in this study. The results of microstructural characterization, mechanical property evaluation by tensile testing, and hydraulic pressure burst testing of the welds for the cladding–endplug specimen are discussed.

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Acknowledgement

This work was funded by the US Department of Energy, Office of Nuclear Energy under the Fuel Cycle Research and Development Program (FCRD-FUEL-2016-000000 and NTRD-FUEL-2017-000363) at Idaho National Laboratory.

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Authors and Affiliations

  1. Idaho National Laboratory, Idaho Falls, ID, 83415, USA

    J. Gan, E. Perez & D. C. Haggard

  2. Center for Space Nuclear Research, Idaho Falls, ID, 83401, USA

    N. Jerred

Authors
  1. J. Gan
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  2. N. Jerred
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  3. E. Perez
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  4. D. C. Haggard
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Correspondence to J. Gan.

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Gan, J., Jerred, N., Perez, E. et al. Laser and Pressure Resistance Weld of Thin-Wall Cladding for LWR Accident-Tolerant Fuels. JOM 70, 192–197 (2018). https://doi.org/10.1007/s11837-017-2697-8

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  • DOI: https://doi.org/10.1007/s11837-017-2697-8

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