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Title: Lattice-level observation of the elastic-to-plastic relaxation process with subnanosecond resolution in shock-compressed Ta using time-resolved in situ Laue diffraction

Abstract

We report direct lattice level measurements of plastic relaxation kinetics through time-resolved, in-situ Laue diffraction of shock-compressed single-crystal [001] Ta at pressures of 27-210 GPa. For a 50 GPa shock, a range of shear strains is observed extending up to the uniaxial limit for early data points (<0.6 ns) and the average shear strain relaxes to a near steady state over ~1 ns. For 80 and 125 GPa shocks, the measured shear strains are fully relaxed already at 200 ps, consistent with rapid relaxation associated with the predicted threshold for homogeneous nucleation of dislocations occurring at shock pressure ~65 GPa. The relaxation rate and shear stresses are used to estimate the dislocation density and these quantities are compared to the Livermore Multiscale Strength model as well as various molecular dynamics simulations.

Authors:
 [1];  [2];  [1];  [1];  [1];  [1];  [1];  [1];  [3];  [1];  [1];  [1]
+ Show Author Affiliations
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Atomic Weapons Establishment (AWE), Reading (United Kingdom)
  3. Riverside Research, Beavercreek, OH (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1242000
Alternate Identifier(s):
OSTI ID: 1222435
Report Number(s):
LLNL-JRNL-673957
Journal ID: ISSN 1098-0121; PRBMDO
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 10; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Wehrenberg, C. E., Comley, A. J., Barton, N. R., Coppari, F., Fratanduono, D., Huntington, C. M., Maddox, B. R., Park, H. -S., Plechaty, C., Prisbrey, S. T., Remington, B. A., and Rudd, R. E. Lattice-level observation of the elastic-to-plastic relaxation process with subnanosecond resolution in shock-compressed Ta using time-resolved in situ Laue diffraction. United States: N. p., 2015. Web. doi:10.1103/PhysRevB.92.104305.
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Wehrenberg, C. E., Comley, A. J., Barton, N. R., Coppari, F., Fratanduono, D., Huntington, C. M., Maddox, B. R., Park, H. -S., Plechaty, C., Prisbrey, S. T., Remington, B. A., & Rudd, R. E. Lattice-level observation of the elastic-to-plastic relaxation process with subnanosecond resolution in shock-compressed Ta using time-resolved in situ Laue diffraction. United States. https://doi.org/10.1103/PhysRevB.92.104305
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Wehrenberg, C. E., Comley, A. J., Barton, N. R., Coppari, F., Fratanduono, D., Huntington, C. M., Maddox, B. R., Park, H. -S., Plechaty, C., Prisbrey, S. T., Remington, B. A., and Rudd, R. E. Tue . "Lattice-level observation of the elastic-to-plastic relaxation process with subnanosecond resolution in shock-compressed Ta using time-resolved in situ Laue diffraction". United States. https://doi.org/10.1103/PhysRevB.92.104305. https://www.osti.gov/servlets/purl/1242000.
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@article{osti_1242000,
title = {Lattice-level observation of the elastic-to-plastic relaxation process with subnanosecond resolution in shock-compressed Ta using time-resolved in situ Laue diffraction},
author = {Wehrenberg, C. E. and Comley, A. J. and Barton, N. R. and Coppari, F. and Fratanduono, D. and Huntington, C. M. and Maddox, B. R. and Park, H. -S. and Plechaty, C. and Prisbrey, S. T. and Remington, B. A. and Rudd, R. E.},
abstractNote = {We report direct lattice level measurements of plastic relaxation kinetics through time-resolved, in-situ Laue diffraction of shock-compressed single-crystal [001] Ta at pressures of 27-210 GPa. For a 50 GPa shock, a range of shear strains is observed extending up to the uniaxial limit for early data points (<0.6 ns) and the average shear strain relaxes to a near steady state over ~1 ns. For 80 and 125 GPa shocks, the measured shear strains are fully relaxed already at 200 ps, consistent with rapid relaxation associated with the predicted threshold for homogeneous nucleation of dislocations occurring at shock pressure ~65 GPa. The relaxation rate and shear stresses are used to estimate the dislocation density and these quantities are compared to the Livermore Multiscale Strength model as well as various molecular dynamics simulations.},
doi = {10.1103/PhysRevB.92.104305},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 10,
volume = 92,
place = {United States},
year = {Tue Sep 29 00:00:00 EDT 2015},
month = {Tue Sep 29 00:00:00 EDT 2015}
}
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https://doi.org/10.1103/PhysRevB.92.104305
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    Works referencing / citing this record:

    In situ X-ray diffraction measurement of shock-wave-driven twinning and lattice dynamics
    journal, October 2017

    • Wehrenberg, C. E.; McGonegle, D.; Bolme, C.
    • Nature, Vol. 550, Issue 7677
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    Microstructural deformation process of shock-compressed polycrystalline aluminum
    journal, May 2019

    Graphical method for analyzing wide-angle x-ray diffraction
    journal, January 2018

    • Chen, XiaoHui; Xue, Tao; Liu, DongBing
    • Review of Scientific Instruments, Vol. 89, Issue 1
    • DOI: 10.1063/1.5003452

    Influence of defects on the shock Hugoniot of tantalum
    journal, June 2019

    • Hahn, Eric N.; Fensin, Saryu J.
    • Journal of Applied Physics, Vol. 125, Issue 21
    • DOI: 10.1063/1.5096526
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