Evaluation of post-weld heat treatments applied to FeCrAl alloy weldments

Mahaffey, Jacob Thomas; Brittan, Andrew; Guckenberger, Aaron; Couet, Adrien; Field, Kevin G.

doi:10.1016/j.jnucmat.2018.12.027

Evaluation of post-weld heat treatments applied to FeCrAl alloy weldments

Journal Article · Mon Dec 17 00:00:00 EST 2018 · Journal of Nuclear Materials

DOI:https://doi.org/10.1016/j.jnucmat.2018.12.027· OSTI ID:1499038

Mahaffey, Jacob Thomas ^[1]; Brittan, Andrew ^[2]; Guckenberger, Aaron ^[2]; Couet, Adrien ^[2]; ^[3]

Univ. of Wisconsin, Madison, WI (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Univ. of Wisconsin, Madison, WI (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

The nuclear incident at the Fukushima Daiichi nuclear power plant has created a strong push for accident-tolerant fuel cladding to replace current zirconium-based cladding. A current near-term focus on iron-chromium-aluminum (FeCrAl) alloys. Laser-welded FeCrAl samples (C35MN, C37M, and C35M10 TC) were subjected to three different post-weld heat treatment regimes: 650 °C for 5 h, 850 °C for 1 h, and 850 °C for 5 h. Here, the samples were then analyzed using optical light microscopy, micro-hardness indentation, and scanning electron microscopy coupled with energy-dispersive spectroscopy and electron backscatter diffraction. The base microstructure of C37M and C35M10 TC experienced significant grain coarsening outside the fusion zone due to the applied post-weld heat treatments, whereas Nb-rich precipitation in C35MN limited grain growth compared with the other alloys studied.

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE; USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000; AC05-00OR22725; NA0003525

OSTI ID:: 1499038

Alternate ID(s):: OSTI ID: 1504016
OSTI ID: 1635973
OSTI ID: 22886840

Report Number(s):: SAND--2019-2260J; 673027

Journal Information:: Journal of Nuclear Materials, Journal Name: Journal of Nuclear Materials Journal Issue: C Vol. 515; ISSN 0022-3115

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Data for: Post-Weld Heat Treatment Characterization of FeCrAl Alloys Mahaffey, Jacob https://doi.org/10.17632/7j55nn95jw The current record is supplemented by this dataset	dataset	January 2018
Data for: Post-Weld Heat Treatment Characterization of FeCrAl Alloys Mahaffey, Jacob https://doi.org/10.17632/7j55nn95jw.1 The current record is supplemented by this dataset	dataset	January 2018
Data for: Post-Weld Heat Treatment Characterization of FeCrAl Alloys Mahaffey, Jacob https://doi.org/10.17632/mznz246kwd The current record is supplemented by this dataset	dataset	January 2018
Data for: Post-Weld Heat Treatment Characterization of FeCrAl Alloys Mahaffey, Jacob https://doi.org/10.17632/mznz246kwd.1 The current record is supplemented by this dataset	dataset	January 2018

Evaluation of post-weld heat treatments applied to FeCrAl alloy weldments

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