Strength of Shock-Loaded Single-Crystal Tantalum [100] Determined using In-Situ Broadband X-ray Laue Diffraction

ORAL

Abstract

We report on recent experiments to determine the strength of shock-loaded single-crystal tantalum [100] using in-situ broadband x-ray Laue diffraction to measure the strain state of the compressed crystal, and elastic constants calculated from first principles. The experiments were conducted at the OMEGA laser facility in Rochester NY, USA. The inferred strength reaches 35 GPa at a shock pressure of 181 GPa and is in excellent agreement with a multiscale strength model (N. R. Barton et al. J. Appl. Phys. 109, 073501 (2011)), which employs a hierarchy of simulation methods over a range of length scales to calculate strength from first principles.

*This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Security, LLC, Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.

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Authors

  • Andrew Comley

    • AWE
    • Atomic Weapons Establishment

  • B.R. Maddox

    • LLNL

  • R.E. Rudd

    • LLNL

  • S.T. Prisbrey

    • LLNL

  • J.A. Hawreliak

    • LLNL

  • D.A. Orlikowski

    • LLNL

  • S.C. Peterson

    • LLNL

  • J.H. Satcher

    • LLNL

  • A.J. Elsholz

    • LLNL

  • H.-S. Park

    • LLNL

  • B.A. Remington

    • LLNL

  • N. Bazin

    • AWE

  • J.M. Foster

    • AWE

  • N. Park

    • AWE

  • P.A. Rosen

    • AWE

  • S.D. Rothman

    • AWE

  • A. Higginbotham

    • University of Oxford

  • M. Suggit

    • University of Oxford

  • J.S. Wark

    • University of Oxford