Modern nanostructured ferritic alloys: A compelling and viable choice for sodium fast reactor fuel cladding applications

Hoelzer, David T.; Massey, Caleb P.; Zinkle, Steven J.; Crawford, Doug C.; Terrani, Kurt A.

doi:10.1016/j.jnucmat.2019.151928

Title: Modern nanostructured ferritic alloys: A compelling and viable choice for sodium fast reactor fuel cladding applications

Abstract

Sodium fast reactor cores present a truly challenging environment for the fuel cladding and core structural materials that limit achievable fuel burnup in these systems. Modern nanostructured ferritic alloys have the potential to deliver the desired high performance characteristics where historic austenitic and ferritic/martensitic alloys fall short. Herein, a new nanostructured ferritic alloy, OFRAC (Oak Ridge Fast Reactor Advanced Fuel Cladding), is developed and demonstrated in cladding geometry with a length > 1 m. The alloy composition and microstructure are tailored to deliver dramatically improved strength and creep resistance. At 600 °C the ultimate tensile strength is ~600 MPa and the stress to induce a steady state strain rate of 10^-6 s^-1 is 500 MPa vs. 200 MPa for traditional ferritic/martensitic alloys. A very high defect sink density was engineered in these alloys that is expected to further enhance the traditional good swelling and irradiation creep resistance of ferritic/martensitic steels. These significant improvements along with the demonstrated viability for seamless cladding production indicate that this alloy is a compelling and viable choice for sodium fast reactor fuel cladding applications.

Authors:

^[1]; Massey, Caleb P. ^[1]; Zinkle, Steven J. ^[2]; Crawford, Doug C. ^[3];

^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
Idaho National Lab. (INL), Idaho Falls, ID (United States)

Publication Date:: Thu Nov 28 00:00:00 EST 2019

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Nuclear Energy (NE)

OSTI Identifier:: 1607116

Alternate Identifier(s):: OSTI ID: 1581011

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Nuclear Materials

Additional Journal Information:: Journal Volume: 529; Journal Issue: C; Journal ID: ISSN 0022-3115

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Sodium fast reactor; Nanostructured ferritic alloy; OFRAC; Thin wall tubing; Tensile and creep properties

Citation Formats


                    Hoelzer, David T., Massey, Caleb P., Zinkle, Steven J., Crawford, Doug C., and Terrani, Kurt A. Modern nanostructured ferritic alloys: A compelling and viable choice for sodium fast reactor fuel cladding applications.  United States: N. p., 2019. 
Web.  doi:10.1016/j.jnucmat.2019.151928.

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                    Hoelzer, David T., Massey, Caleb P., Zinkle, Steven J., Crawford, Doug C., & Terrani, Kurt A. Modern nanostructured ferritic alloys: A compelling and viable choice for sodium fast reactor fuel cladding applications.  United States.  https://doi.org/10.1016/j.jnucmat.2019.151928

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                    Hoelzer, David T., Massey, Caleb P., Zinkle, Steven J., Crawford, Doug C., and Terrani, Kurt A. Thu .  
"Modern nanostructured ferritic alloys: A compelling and viable choice for sodium fast reactor fuel cladding applications".  United States.  https://doi.org/10.1016/j.jnucmat.2019.151928.  https://www.osti.gov/servlets/purl/1607116.

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@article{osti_1607116,

  title        = {Modern nanostructured ferritic alloys: A compelling and viable choice for sodium fast reactor fuel cladding applications},

  author       = {Hoelzer, David T. and Massey, Caleb P. and Zinkle, Steven J. and Crawford, Doug C. and Terrani, Kurt A.},

  abstractNote = {Sodium fast reactor cores present a truly challenging environment for the fuel cladding and core structural materials that limit achievable fuel burnup in these systems. Modern nanostructured ferritic alloys have the potential to deliver the desired high performance characteristics where historic austenitic and ferritic/martensitic alloys fall short. Herein, a new nanostructured ferritic alloy, OFRAC (Oak Ridge Fast Reactor Advanced Fuel Cladding), is developed and demonstrated in cladding geometry with a length > 1 m. The alloy composition and microstructure are tailored to deliver dramatically improved strength and creep resistance. At 600 °C the ultimate tensile strength is ~600 MPa and the stress to induce a steady state strain rate of 10-6 s-1 is 500 MPa vs. 200 MPa for traditional ferritic/martensitic alloys. A very high defect sink density was engineered in these alloys that is expected to further enhance the traditional good swelling and irradiation creep resistance of ferritic/martensitic steels. These significant improvements along with the demonstrated viability for seamless cladding production indicate that this alloy is a compelling and viable choice for sodium fast reactor fuel cladding applications.},

  doi          = {10.1016/j.jnucmat.2019.151928},

  journal      = {Journal of Nuclear Materials},

  number       = C,

  volume       = 529,

  place        = {United States},

  year         = {Thu Nov 28 00:00:00 EST 2019},

  month        = {Thu Nov 28 00:00:00 EST 2019}

}

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Title: Modern nanostructured ferritic alloys: A compelling and viable choice for sodium fast reactor fuel cladding applications

Abstract

Citation Formats

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