Versatile Oxide Films Protect FeCrAl Alloys Under Normal Operation and Accident Conditions in Light Water Power Reactors

Rebak, Raúl B.

doi:10.1007/s11837-017-2705-z

Cited by 44 publications

(10 citation statements)

References 7 publications

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“…In general, the FeCrAl alloys under consideration have low corrosion in environments typical of LWRs. [Rebak 2018] FeCrAl cladding also offers resistance to debris fretting and eliminates the occurrence of shadow corrosion. However, FeCrAl claddings exhibit higher thermal neutron absorption and hydrogen/tritium permeability than traditional Zr-based cladding.…”

Section: Gnfmentioning

confidence: 99%

“…However, FeCrAl claddings exhibit higher thermal neutron absorption and hydrogen/tritium permeability than traditional Zr-based cladding. [Rebak 2018] GNF has tested several different FeCrAl alloys, including C26M, Kanthal APMT, and MA956. GNF has not publicly stated which FeCrAl alloy will be used for batch production of IronClad; however, 2 unfueled IronClad rods irradiated at Hatch were C26M; 8 fueled IronClad rods inserted in Clinton were C26M; and 16 unfueled rods inserted in Clinton were C26M, APMT, and MA956.…”

Section: Gnfmentioning

confidence: 99%

See 1 more Smart Citation

Extended Enrichment Accident Tolerant LWR Fuel Isotopic and Lattice Parameter Trends

Hall¹,

Sweet²,

Belles³

et al. 2021

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Section: Gnfmentioning

confidence: 99%

Section: Gnfmentioning

confidence: 99%

Extended Enrichment Accident Tolerant LWR Fuel Isotopic and Lattice Parameter Trends

Hall¹,

Sweet²,

Belles³

et al. 2021

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“…At 1200°C, the protective oxide was simply a layer of columnar clean alumina. 10,13 The alumina that formed at 1200°C was alpha; however the alumina formed at 800°C was difficult to characterize. Figures 13 and 14 show that at temperatures as low as 800°C, the FeCrAl develop a protection mechanism against air or steam based on a dual-…”

Section: Apmt Airmentioning

confidence: 99%

“…The oxide films that FeCrAl form under normal operation condition of the reactors (e.g., hydrogenated water near 300°C) and under severe conditions were characterized before. 12,13 Light water reactor fuel rods are generally in contact with near pure water in the temperature range of 300°C. Occasionally, the cladding may reach higher temperatures during excursions called anticipated operational occurrences and design-basis accident conditions.…”

Section: Introductionmentioning

confidence: 99%

Oxidation Characteristics of Two FeCrAl Alloys in Air and Steam from 800°C to 1300°C

Rebak¹,

Gupta²,

Larsen³

2018

JOM

Self Cite

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Iron-chromium-aluminum (FeCrAl) alloys are being investigated as cladding material for urania nuclear fuel in light water power reactors. One extraordinary attribute of the FeCrAl alloys is their resistance to attack by air and steam up to their melting point. It was of interest to study the kinetics of oxidation of FeCrAl from 800°C to 1300°C in air and in steam to determine how the oxides evolve to provide protection to the alloys. The two investigated alloys were APMT (Fe-21Cr-5Al-3Mo) and C26M (Fe-12Cr-6Al-2Mo). Results show that both alloys had similar oxidation kinetics despite their different chemical compositions. For the testing times, the oxidation rate was higher in air than in steam at the higher temperatures (1100-1300°C) and higher in steam than in air at the lower temperatures (800-1100°C). In the lower temperature range, the surface oxide consisted of two layers, an internal layer rich in aluminum and an external layer containing Al, Cr, and Fe. In the higher temperature range, the oxide was a single layer of alumina (no Cr, no Fe, no Mo).

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“…FeCrAl alloys were of particular interest as they have been widely reported as a good candidate for nuclear applications, specifically the fuel cladding, heating elements and catalytic converters [25][26][27]. A high amount of Cr and Al provide exceptional oxidation resistance, forming a coherent protective multilayer film of Al 2 O 3 -Cr 2 O 3 up to the melting point of ∼ 1500°C [28]. Furthermore, FeCrAl alloys have not previously been used in AM.…”

mentioning

confidence: 99%

Alloy design against the solidification cracking in fusion additive manufacturing: an application to a FeCrAl alloy

Dovgyy

Simonelli

Pham

2021

Materials Research Letters

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This study developed a design methodology against liquid-state cracking by combining the Scheil-Gulliver solidification simulations and Machine Learning analysis to design alloys for Fusion Additive Manufacturing. Applying this design approach resulted in a Fe-20Cr-7Al-4Mo-3Ni. The alloy was successfully printed with relative densities of over 99%. Microstructure of printed material was extensively characterised through scanning and transmission electron microscopy, energy dispersive spectroscopy and x-ray diffraction, confirming a single-phase material with low texture and negligible chemical segregation. Neither solidification nor liquation cracks were detected, supporting the validity of the methodology, however, the alloy suffered from solid-state cracking, hindering the ductility. IMPACT STATEMENTA design methodology against solidification and liquation cracking and chemical segregation to assist the alloy design for Additive Manufacturing.

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Versatile Oxide Films Protect FeCrAl Alloys Under Normal Operation and Accident Conditions in Light Water Power Reactors

Cited by 44 publications

References 7 publications

Extended Enrichment Accident Tolerant LWR Fuel Isotopic and Lattice Parameter Trends

Extended Enrichment Accident Tolerant LWR Fuel Isotopic and Lattice Parameter Trends

Oxidation Characteristics of Two FeCrAl Alloys in Air and Steam from 800°C to 1300°C

Alloy design against the solidification cracking in fusion additive manufacturing: an application to a FeCrAl alloy

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