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Title: Peak states of molybdenum single crystals shock compressed to high stresses

Abstract

In this work, to determine crystal anisotropy effects at high stresses, peak states behind the plastic shock waves were examined in BCC single crystals. Using plate impact experiments, molybdenum (Mo) single crystals were shock compressed up to 190 GPa elastic impact stress along [100], [110], and [111] orientations. Laser interferometry was used to measure wave velocities and particle velocity profiles at the Mo–LiF window interface. These data were analyzed to obtain in-material quantities in the peak states. The Hugoniots for [100] and [110] orientations were comparable, but the Hugoniot for the [111] orientation was different from the other two orientations. Also, these Mo single crystal Hugoniots display differences from the polycrystalline Mo Hugoniots. Although none of the differences can be considered large, the present results demonstrate that, unlike FCC metal single crystals (Cu, Al), some anisotropy is preserved in Mo single crystal Hugoniots even at high stresses.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1]
+ Show Author Affiliations
  1. California Institute of Technology (CalTech), Pasadena, CA (United States)
  2. Washington State Univ., Pullman, WA (United States). Inst. for Shock Physics
Publication Date:
Research Org.:
Washington State Univ., Pullman, WA (United States). Inst. for Shock Physics
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
OSTI Identifier:
1818145
Grant/Contract Number:  
NA0002007
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 129; Journal Issue: 24; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Deformation; Wave propagation; Molybdenum; Shock compression; Crystal orientation; Laser interferometry; Plasticity; Shock wave experiments

Citation Formats

Oniyama, Tomoyuki, Gupta, Yogendra M., and Ravichandran, Guruswami. Peak states of molybdenum single crystals shock compressed to high stresses. United States: N. p., 2021. Web. doi:10.1063/5.0054395.
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Oniyama, Tomoyuki, Gupta, Yogendra M., & Ravichandran, Guruswami. Peak states of molybdenum single crystals shock compressed to high stresses. United States. https://doi.org/10.1063/5.0054395
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Oniyama, Tomoyuki, Gupta, Yogendra M., and Ravichandran, Guruswami. Wed . "Peak states of molybdenum single crystals shock compressed to high stresses". United States. https://doi.org/10.1063/5.0054395. https://www.osti.gov/servlets/purl/1818145.
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@article{osti_1818145,
title = {Peak states of molybdenum single crystals shock compressed to high stresses},
author = {Oniyama, Tomoyuki and Gupta, Yogendra M. and Ravichandran, Guruswami},
abstractNote = {In this work, to determine crystal anisotropy effects at high stresses, peak states behind the plastic shock waves were examined in BCC single crystals. Using plate impact experiments, molybdenum (Mo) single crystals were shock compressed up to 190 GPa elastic impact stress along [100], [110], and [111] orientations. Laser interferometry was used to measure wave velocities and particle velocity profiles at the Mo–LiF window interface. These data were analyzed to obtain in-material quantities in the peak states. The Hugoniots for [100] and [110] orientations were comparable, but the Hugoniot for the [111] orientation was different from the other two orientations. Also, these Mo single crystal Hugoniots display differences from the polycrystalline Mo Hugoniots. Although none of the differences can be considered large, the present results demonstrate that, unlike FCC metal single crystals (Cu, Al), some anisotropy is preserved in Mo single crystal Hugoniots even at high stresses.},
doi = {10.1063/5.0054395},
journal = {Journal of Applied Physics},
number = 24,
volume = 129,
place = {United States},
year = {Wed Jun 30 00:00:00 EDT 2021},
month = {Wed Jun 30 00:00:00 EDT 2021}
}
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https://doi.org/10.1063/5.0054395
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