Cavity evolution at grain boundaries as a function of radiation damage and thermal conditions in nanocrystalline nickel

doi:10.1080/21663831.2015.1121165

Title: Cavity evolution at grain boundaries as a function of radiation damage and thermal conditions in nanocrystalline nickel

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Enhanced radiation tolerance of nanostructured metals is attributed to the high density of interfaces that can absorb radiation-induced defects. Here, cavity evolution mechanisms during cascade damage, helium implantation, and annealing of nanocrystalline nickel are characterized via in situ transmission electron microscopy (TEM). Films subjected to self-ion irradiation followed by helium implantation developed evenly distributed cavity structures, whereas films exposed in the reversed order developed cavities preferentially distributed along grain boundaries. Post-irradiation annealing and orientation mapping demonstrated uniform cavity growth in the nanocrystalline structure, and cavities spanning multiple grains. Furthermore, these mechanisms suggest limited ability to reduce swelling, despite the stability of the nanostructure.

Authors:

Muntifering, Brittany ^[1] ; Blair, Sarah Jane ^[2] ; Gong, Cajer ^[3] ; Dunn, Aaron ^[4] ; Dingreville, Remi ^[5] ; Qu, Jianmin ^[6] ; Hattar, Khalid ^[5]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Northwestern Univ., Evanston, IL (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Univ. of New Mexico, Albuquerque, NM (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Georgia Tech CNRS, Metz (France)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Northwestern Univ., Evanston, IL (United States); Tufts Univ., Medford, MA (United States)

Publication Date:: 2015-12-30

Report Number(s):: SAND-2016-12418J
Journal ID: ISSN 2166-3831; 650382

Grant/Contract Number:: AC04-94AL85000

Type:: Accepted Manuscript

Journal Name:: Materials Research Letters

Additional Journal Information:: Journal Volume: 4; Journal Issue: 2; Journal ID: ISSN 2166-3831

Publisher:: Taylor and Francis

Research Org:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org:: USDOE National Nuclear Security Administration (NNSA)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; In situ TEM; radiation; helium implantation; cavity evolution; nanocrystalline nickel

OSTI Identifier:: 1343266


                    Muntifering, Brittany, Blair, Sarah Jane, Gong, Cajer, Dunn, Aaron, Dingreville, Remi, Qu, Jianmin, and Hattar, Khalid. Cavity evolution at grain boundaries as a function of radiation damage and thermal conditions in nanocrystalline nickel.  United States: N. p.,  
        Web.  doi:10.1080/21663831.2015.1121165.

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                    Muntifering, Brittany, Blair, Sarah Jane, Gong, Cajer, Dunn, Aaron, Dingreville, Remi, Qu, Jianmin, & Hattar, Khalid. Cavity evolution at grain boundaries as a function of radiation damage and thermal conditions in nanocrystalline nickel.  United States.  doi:10.1080/21663831.2015.1121165.

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                    Muntifering, Brittany, Blair, Sarah Jane, Gong, Cajer, Dunn, Aaron, Dingreville, Remi, Qu, Jianmin, and Hattar, Khalid. 2015.  
        "Cavity evolution at grain boundaries as a function of radiation damage and thermal conditions in nanocrystalline nickel".  United States.  
        doi:10.1080/21663831.2015.1121165.  https://www.osti.gov/servlets/purl/1343266.

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@article{osti_1343266,

  title        = {Cavity evolution at grain boundaries as a function of radiation damage and thermal conditions in nanocrystalline nickel},

  author       = {Muntifering, Brittany and Blair, Sarah Jane and Gong, Cajer and Dunn, Aaron and Dingreville, Remi and Qu, Jianmin and Hattar, Khalid},

  abstractNote = {Enhanced radiation tolerance of nanostructured metals is attributed to the high density of interfaces that can absorb radiation-induced defects. Here, cavity evolution mechanisms during cascade damage, helium implantation, and annealing of nanocrystalline nickel are characterized via in situ transmission electron microscopy (TEM). Films subjected to self-ion irradiation followed by helium implantation developed evenly distributed cavity structures, whereas films exposed in the reversed order developed cavities preferentially distributed along grain boundaries. Post-irradiation annealing and orientation mapping demonstrated uniform cavity growth in the nanocrystalline structure, and cavities spanning multiple grains. Furthermore, these mechanisms suggest limited ability to reduce swelling, despite the stability of the nanostructure.},

  doi          = {10.1080/21663831.2015.1121165},

  journal      = {Materials Research Letters},

  number       = 2,

  volume       = 4,

  place        = {United States},

  year         = {2015},

  month        = {12}

}

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10.1080/21663831.2015.1121165
https://doi.org/10.1080/21663831.2015.1121165

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Title: Cavity evolution at grain boundaries as a function of radiation damage and thermal conditions in nanocrystalline nickel

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