Dynamical behavior of tantalum | Zendy

M.D. Furnish | Zendy; L.C. Chhabildas | Zendy; Daniel Steinberg | Zendy

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Dynamical behavior of tantalum

Author(s) -

M.D. Furnish,

L.C. Chhabildas,

Daniel Steinberg

Publication year - 1993

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/139478

Subject(s) - tantalum , yield (engineering) , interferometry , viscoelasticity , range (aeronautics) , materials science , light gas gun , lagrangian , mechanics , composite material , optics , physics , metallurgy , projectile , mathematical physics

The authors have performed four dynamic impact tests on tantalum to determine its high-pressure yield and viscoelastic properties. Their experiments used compressed gas gun techniques to produce a combination of shocks, reshocks and releases over the pressure range 0--12 GPa in samples 5.0 and 7.3 mm thick. Profiles were recorded using VISAR (velocity interferometry) techniques. Elastic precursors suggest a yield strength of 0.95 GPa, which is somewhat above literature values. As with other metals, release waves do not show a perfect elastic-plastic behavior, indicating a slight Baushinger effect. Lagrangian sound velocities for singly shocked states are consistent with earlier results (about 4.5 km/sec)

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