Determination of Longitudinal and Bulk Sound Velocities in Natural Uranium under Shock-wave Loading

ORAL

Abstract

We carried out the experiments on determination of longitudinal and bulk sound velocities in natural uranium in the range of pressures 40-72 GPa using laser interferometer Fabry-Perot. From the registered particle velocities profiles of contact boundary U-LiF the following parameters of elastic-plastic wave were defined: amplitude of elastic release wave 5.3-6.8 GPa, value of Poisson ratio 0.34-0.40, yield strength 0.96-1.36 GPa. It is shown, that influence of internal material structure is the cause of complex elastic-plastic behavior of natural uranium.

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Authors

  • Evgeniy Mikhailov

  • Vadim Knyazev

  • Stanislav Finyushin

  • Alexey Fedorov

  • Anatoliy Mikhailov

  • Dmitriy Nazarov

  • Tatiana Govorunova

  • Denis Kalashnikov