Post-irradiation annealing behavior of neutron-irradiated FeCu, FeMnNi and FeMnNiCu model alloys investigated by means of small-angle neutron scattering

Frank Bergner, Andreas Ulbricht, Peter Lindner, Ulrich Keiderling, Lorenzo Malerba, Milan Konstantinovic

    Research outputpeer-review


    Neutron irradiation of reactor pressure vessel steels gives rise to the formation of thermodynamically stable and unstable nano-features. The present work is focused on the stability of Cu-, Mn- and Ni-containing solute clusters in model alloys exposed to post-irradiation annealing. Fe0.1Cu, Fe1.2Mn0.7Ni and Fe1.2Mn0.7Ni0.1Cu (wt%) model alloys irradiated up to neutron exposures of 0.1 and 0.19 dpa (displacements per atom) were annealed at stepwise increasing temperatures in the range from 300 C (i.e. near irradiation temperature) to 500 C and characterized by means of small-angle neutron scattering (SANS). We have found characteristic differences in the annealing behavior of the alloys. In particular, there is a non-trivial (synergistic–antagonistic) interplay of Mn/Ni and Cu.
    Original languageEnglish
    Pages (from-to)22-27
    JournalJournal of Nuclear Materials
    Issue number1-3
    StatePublished - 27 Jul 2014

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