Irradiation hardening and microstructure evolution of ion-irradiated Zr-hydride

Naoko Oono, Ryuta Kasada, Toru Higuchi, Kan Sakamoto, Masafumi Nakatsuka, Akiko Hasegawa, Sosuke Kondo, Hideki Matsui, Akihiko Kimura

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

6.4 MeV Fe3+ ion irradiation was applied to a -Zr-hydride to clarify the relation between the hardening and the microstructure change of bulk Zr-hydrides under neutron irradiation. Irradiation hardening was measured by nano-indentation test. TEM cross-sectional observation results showed that the dominant deformation mechanism of -Zr-hydride was the formation of the new fine twin bands and tangled dislocations and black dot-like defects were observed in the irradiated hydride matrix. Ultra low voltage SEM (ULV-SEM) observation showed that cracks were induced obviously in the indents print after the irradiation. The irradiation-induced defects made the deformation of -Zr-hydride difficult.

Original languageEnglish
Pages (from-to)366-370
Number of pages5
JournalJournal of Nuclear Materials
Volume419
Issue number1-3
DOIs
Publication statusPublished - 2011 Dec
Externally publishedYes

ASJC Scopus subject areas

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

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