A comparative TEM study of in-reactor and post-irradiation tensile tested copper

Janne Pakarinen (Corresponding Author), Seppo Tähtinen, B.N. Singh

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    Abstract

    The deformation microstructures of oxygen-free high-conductivity (OFHC) copper were examined by transmission electron microscopy (TEM) following in-reactor and post-irradiation slow strain rate tensile tests. The TEM results suggest that the main modes of deformation differ between all examined cases. Plastic deformation appeared predominantly localized in the defect-free cleared channels following post-irradiation testing and hardly any dislocations were seen outside the channels. The microstructures following in-reactor tests were characterized by a small amount of cleared channels and a distinct dislocation density within the matrix. However, the dislocations observed following in-reactor testing did not seem to interact with each other, whereas that was the main mode of deformation in the non-irradiated reference sample. The possible mechanisms of plastic deformation are discussed based on the experimental results
    Original languageEnglish
    Pages (from-to)S821-S825
    JournalJournal of Nuclear Materials
    Volume442
    Issue number1-3 suppl.1
    DOIs
    Publication statusPublished - 2013
    MoE publication typeA1 Journal article-refereed
    EventFifteenth International Conference on Fusion Reactor Materials - Charleston, United States
    Duration: 16 Oct 201122 Oct 2011

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