Shock response of body centered cubic metals

J. C F Millett, M. Cotton, G. Whiteman, N. K. Bourne, N. T. Park, G. T. Gray

    Research output: Chapter in Book/Report/Conference proceedingChapter

    Abstract

    Over the past few years, a research programme has been in place to examine the shock response of body centred cubic metals such as tantalum and tungsten. Examination of the development of shear strength behind the shock front has shown common behaviour in that a marked decrease has been noted, both in the pure metals and their simple alloys. This has been ascribed to the low generation of new dislocation line length due to the high Peierls stresses found in these metals. However more recent work in niobium and molybdenum has shown a more constant response in shear strength due to either a much lower Peierls stress (niobium) or the possibility of twin formation (molybdenum). Examination of the rise times in rear surface velocity traces in these materials has also shown a degree of agreement with changes in lateral stress behind the shock front. © 2012 American Institute of Physics.
    Original languageEnglish
    Title of host publicationAIP Conference Proceedings|AIP Conf. Proc.
    Pages1077-1080
    Number of pages3
    Volume1426
    DOIs
    Publication statusPublished - 2012
    Event17th Biennial Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, 2011 APS SCCM - Chicago, IL
    Duration: 1 Jul 2012 → …

    Publication series

    NameAIP Conference Proceedings

    Other

    Other17th Biennial Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter, 2011 APS SCCM
    CityChicago, IL
    Period1/07/12 → …

    Keywords

    • bcc
    • Plate impact
    • rise time
    • shear strength

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