Defect evolution in Ni and NiCoCr by in situ 2.8 MeV Au irradiation

Xing Wang; Christopher M. Barr; Ke Jin; Hongbin Bei; Khalid Hattar; William J. Weber; Yanwen Zhang; Karren L. More

doi:10.1016/j.jnucmat.2019.05.026

Defect evolution in Ni and NiCoCr by in situ 2.8 MeV Au irradiation

Xing Wang, Christopher M. Barr, Ke Jin, Hongbin Bei, Khalid Hattar, William J. Weber, Yanwen Zhang, Karren L. More

Ken and Mary Alice Lindquist Department of Nuclear Engineering

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

The evolution of radiation-induced defects in Ni and the single-phase concentrated solid solution alloy, NiCoCr, were investigated during in situ 2.8 MeV Au ion irradiation and post-irradiation analysis using transmission electron microscopy. Compared to Ni, both the size and area density of defect clusters decreased in NiCoCr under the same irradiation conditions, suggesting that the chemical complexity, i.e., randomness of lattice site occupations, of NiCoCr suppressed radiation-induced damage. One-dimensional glide of defect clusters was observed in Ni but not in the NiCoCr alloy. The structural nature of small defect clusters in NiCoCr were further investigated using high-angle annular dark field scanning transmission electron microscopy.

Original language	English (US)
Pages (from-to)	502-509
Number of pages	8
Journal	Journal of Nuclear Materials
Volume	523
DOIs	https://doi.org/10.1016/j.jnucmat.2019.05.026
State	Published - Sep 2019

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
General Materials Science
Nuclear Energy and Engineering

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10.1016/j.jnucmat.2019.05.026

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@article{874470e0acb24456a9b0a856cfd19603,

title = "Defect evolution in Ni and NiCoCr by in situ 2.8 MeV Au irradiation",

abstract = "The evolution of radiation-induced defects in Ni and the single-phase concentrated solid solution alloy, NiCoCr, were investigated during in situ 2.8 MeV Au ion irradiation and post-irradiation analysis using transmission electron microscopy. Compared to Ni, both the size and area density of defect clusters decreased in NiCoCr under the same irradiation conditions, suggesting that the chemical complexity, i.e., randomness of lattice site occupations, of NiCoCr suppressed radiation-induced damage. One-dimensional glide of defect clusters was observed in Ni but not in the NiCoCr alloy. The structural nature of small defect clusters in NiCoCr were further investigated using high-angle annular dark field scanning transmission electron microscopy.",

author = "Xing Wang and Barr, {Christopher M.} and Ke Jin and Hongbin Bei and Khalid Hattar and Weber, {William J.} and Yanwen Zhang and More, {Karren L.}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = sep,

doi = "10.1016/j.jnucmat.2019.05.026",

language = "English (US)",

volume = "523",

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T1 - Defect evolution in Ni and NiCoCr by in situ 2.8 MeV Au irradiation

AU - Wang, Xing

AU - Barr, Christopher M.

AU - Jin, Ke

AU - Bei, Hongbin

AU - Hattar, Khalid

AU - Weber, William J.

AU - Zhang, Yanwen

AU - More, Karren L.

PY - 2019/9

Y1 - 2019/9

N2 - The evolution of radiation-induced defects in Ni and the single-phase concentrated solid solution alloy, NiCoCr, were investigated during in situ 2.8 MeV Au ion irradiation and post-irradiation analysis using transmission electron microscopy. Compared to Ni, both the size and area density of defect clusters decreased in NiCoCr under the same irradiation conditions, suggesting that the chemical complexity, i.e., randomness of lattice site occupations, of NiCoCr suppressed radiation-induced damage. One-dimensional glide of defect clusters was observed in Ni but not in the NiCoCr alloy. The structural nature of small defect clusters in NiCoCr were further investigated using high-angle annular dark field scanning transmission electron microscopy.

AB - The evolution of radiation-induced defects in Ni and the single-phase concentrated solid solution alloy, NiCoCr, were investigated during in situ 2.8 MeV Au ion irradiation and post-irradiation analysis using transmission electron microscopy. Compared to Ni, both the size and area density of defect clusters decreased in NiCoCr under the same irradiation conditions, suggesting that the chemical complexity, i.e., randomness of lattice site occupations, of NiCoCr suppressed radiation-induced damage. One-dimensional glide of defect clusters was observed in Ni but not in the NiCoCr alloy. The structural nature of small defect clusters in NiCoCr were further investigated using high-angle annular dark field scanning transmission electron microscopy.

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VL - 523

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EP - 509

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

Defect evolution in Ni and NiCoCr by in situ 2.8 MeV Au irradiation

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Defect evolution in Ni and NiCoCr by in situ 2.8 MeV Au irradiation

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All Science Journal Classification (ASJC) codes

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Defect evolution in Ni and NiCoCr by in situ 2.8 MeV Au irradiation