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

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


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 languageEnglish (US)
Pages (from-to)502-509
Number of pages8
JournalJournal of Nuclear Materials
StatePublished - Sep 2019

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering


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