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 journalArticle

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 1
Externally publishedYes

ASJC Scopus subject areas

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

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    Oono, N., Kasada, R., Higuchi, T., Sakamoto, K., Nakatsuka, M., Hasegawa, A., Kondo, S., Matsui, H., & Kimura, A. (2011). Irradiation hardening and microstructure evolution of ion-irradiated Zr-hydride. Journal of Nuclear Materials, 419(1-3), 366-370. https://doi.org/10.1016/j.jnucmat.2011.06.041