Peak states of molybdenum single crystals shock compressed to high stresses

Oniyama, Tomoyuki; Gupta, Yogendra M.; Ravichandran, Guruswami

doi:10.1063/5.0054395

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

Journal Article · Wed Jun 30 00:00:00 EDT 2021 · Journal of Applied Physics

DOI:https://doi.org/10.1063/5.0054395· OSTI ID:1818145

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California Institute of Technology (CalTech), Pasadena, CA (United States)
Washington State Univ., Pullman, WA (United States). Inst. for Shock Physics

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.

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Research Organization:: Washington State Univ., Pullman, WA (United States). Inst. for Shock Physics

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)

Grant/Contract Number:: NA0002007

OSTI ID:: 1818145

Journal Information:: Journal of Applied Physics, Vol. 129, Issue 24; ISSN 0021-8979

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
Deformation
Wave propagation
Molybdenum
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Laser interferometry
Plasticity
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Title: Peak states of molybdenum single crystals shock compressed to high stresses

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