Variations in the shear strength of shock loaded niobium

A. Workman, J. C F Millett, S. M. Stirk, N. K. Bourne, G. Whiteman, N. T. Park

    Research output: Chapter in Book/Conference proceedingChapter

    Abstract

    The shock response of the body centred cubic (bcc) metal, niobium, and in particular its shear strength has been measured using manganin stress gauges. Whilst the shear strength increases with shock amplitude, as would be expected, its shear strength behind the shock front has been observed to be near constant. This is in contrast with other bcc metals such as tantalum or tungsten where a significant reduction has been observed. It has been suggested that the low Peierls stress in this metal (compared to Ta or W) enables the material to generate more new dislocations which reduces the decrease in shear strength. © 2009 American Institute of Physics.
    Original languageEnglish
    Title of host publicationAIP Conference Proceedings|AIP Conf. Proc.
    Pages1019-1022
    Number of pages3
    Volume1195
    Publication statusPublished - 2009
    EventConference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, 2009 APS SCCM - Nashville, TN
    Duration: 1 Jul 2009 → …

    Publication series

    NameAIP Conference Proceedings

    Other

    OtherConference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, 2009 APS SCCM
    CityNashville, TN
    Period1/07/09 → …

    Keywords

    • Niobium
    • Plate impact
    • Shear strength

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