Measurement of the strengths of Be and Pb4Sb by quasi-isentropic compress and release at near 100 GPa

Fairley, James S. T.; Rothman, S. D.; Brown, J. L.

doi:10.1063/5.0045660

Measurement of the strengths of Be and Pb4Sb by quasi-isentropic compress and release at near 100 GPa

Journal Article · Wed Jun 23 00:00:00 EDT 2021 · Journal of Applied Physics

DOI:https://doi.org/10.1063/5.0045660· OSTI ID:1820423

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AWE Aldermaston, Reading (United Kingdom)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

The Ramp-compression experiments have been performed on the “Z” pulsed-power facility to investigate the strengths of Be and lead-antimony alloy. Yield strength and shear stress near peak pressure were obtained from measurements of the sound speed on release and using the Asay self-consistent method. Two S-65 grade Be samples, from batches which showed a significant difference in yield strength at ambient conditions, were found to have near identical yield strengths, which were also in agreement with similar earlier measurements on S-200 grade Be. Yield strength of Pb4Sb alloy at ~120 GPa was 1.35 GPa, while a National Ignition Facility (NIF) experiment by A. Krygier et al. (Phys. Rev. Lett. 123, 205701 (2020)) found 3.8 GPa at ~400 GPa pressure. Our result is intermediate between the ambient value and the Krygier one, but the significantly increased strength is probably not associated with the transition to the high-pressure bcc phase of lead.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0003525

OSTI ID:: 1820423

Alternate ID(s):: OSTI ID: 1798224

Report Number(s):: SAND--2021-10635J; 699048

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

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

Country of Publication:: United States

Language:: English

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