Wave attenuation in microcrystal copper at irradiation by a powerful electron beam

E. N. Borodin, A. E. Mayer, V. S. Krasnikov

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The numerical study of high-rate plasticity of Cu target with different grain sizes under the action of nanosecond relativistic high-current electron beam has been carried out in the paper. The model of microcrystal material plasticity includes dislocation kinetics and dynamics as well as the stress relief in the grain boundaries of the polycrystal. This model has only two adjustable parameters. The presented results demonstrate a strong dependence of the shock wave attenuation coefficient on the grain size. At the grain size of about 70 nm, the plasticity mechanism of the dislocation glide inside grains changes to plasticity mechanism along grain boundaries.

    Original languageEnglish
    Pages (from-to)1315-1318
    Number of pages4
    JournalCurrent Applied Physics
    Volume11
    Issue number6
    DOIs
    Publication statusPublished - 1 Nov 2011

    Keywords

    • Dislocation dynamics
    • Electron beam methods
    • Grain boundaries
    • Nanocrystalline materials
    • Plasticity

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