Dislocation Microstructures in Fatiqued Copper Polycrystals

A.T. Winter, Ole Bøcker Pedersen, K.V. Rasmussen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Dislocation structures characteristic of persistent slip bands were observed in the interior of polycrystalline copper after fatigue. At low strain amplitudes, within the plateau on the cyclic stress-strain curve, only structures identical to those seen in single crystals were observed. This allows the stress amplitude of the plateau to be calculated. At higher strain amplitudes, above the plateau, more complex structures were found. Further work will be needed to establish the nature of these new structures but it seems clear that the increase in stress amplitude is connected with their appearance.
    Original languageEnglish
    JournalACTA METALLURGICA
    Volume29
    Issue number5
    Pages (from-to)735-748
    ISSN0001-6160
    DOIs
    Publication statusPublished - 1981

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