Effects of neutron irradiation on microstructure and mechanical properties of pure iron

B.N. Singh, Andy Horsewell, P. Toft

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    Tensile specimens of pure iron were irradiated with fission neutrons (i) at 320 K to displacement dose levels of 7.5 x 10(-3), 7.5 x 10(-2) and 3.75 x 10(-1) dpa (NRT) and (ii) at 523 K to dose levels of 7.5 x 10(-2) and 2.25 x 10(-1) dpa (NRT). Both unirradiated and irradiated specimens were tensile tested at the irradiation temperatures. Microstructures of the as-irradiated and irradiated and tensile tested specimens were investigated by transmission electron microscopy. Fracture surfaces of tensile tested specimens in unirradiated and irradiated conditions were examined in a scanning electron microscope. Results of these investigations are reported and discussed particularly in terms of the role of interstitial clusters (produced directly in the cascades) and their transport via one-dimensional glide. It is suggested that the formation and interaction of 'cleared' channels may play a significant role in determining the deformation and fracture behaviour of the irradiated pure iron.
    Original languageEnglish
    JournalJournal of Nuclear Materials
    Volume271-272
    Pages (from-to)97-101
    ISSN0022-3115
    DOIs
    Publication statusPublished - May 1999
    Event8th International conference on fusion reactor materials (ICFRM-8) - Sendai, Japan
    Duration: 26 Oct 199731 Oct 1997
    Conference number: 8

    Conference

    Conference8th International conference on fusion reactor materials (ICFRM-8)
    Number8
    CountryJapan
    CitySendai
    Period26/10/199731/10/1997
    SponsorTohoku University

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