Shock compression of molybdenum single crystals to 110 GPa: Elastic–plastic deformation and crystal anisotropy

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

doi:10.1063/5.0006559

Title: Shock compression of molybdenum single crystals to 110 GPa: Elastic–plastic deformation and crystal anisotropy

Journal Article · Fri May 29 00:00:00 EDT 2020 · Journal of Applied Physics

DOI:https://doi.org/10.1063/5.0006559· OSTI ID:1633426

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

To explore the role of crystal anisotropy on the elastic-plastic deformation of BCC single crystals at high shock stresses, molybdenum (Mo) single crystals were shock compressed along [100], [111], and [110] orientations at elastic impact stresses between 20 and 110 GPa. Laser interferometry was used to measure shock wave velocities and particle velocity histories. Along the [100] and [111] orientations, elastic-plastic waves (two wave structure) were observed up to 110 GPa. Along the [110] orientation, the two wave structure was observed only up to 90 GPa. The measured elastic wave amplitudes were analyzed to determine crystal anisotropy effects, impact stress dependence, and the activated slip systems on the Hugoniot elastic limit. The results from our work have provided insight into the role of crystal anisotropy on the elastic-plastic deformation under shock compression 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:: 1633426

Journal Information:: Journal of Applied Physics, Vol. 127, Issue 20; ISSN 0021-8979

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

Country of Publication:: United States

Language:: English

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