Dynamical behavior of tantalum

Conference · Sun Jul 10 00:00:00 EDT 1994 · AIP Conference Proceedings (American Institute of Physics); (United States)

DOI:https://doi.org/10.1063/1.46296· OSTI ID:7183307

Furnish, M D; Chhabildas, L C ^[1]; Steinberg, D J ^[2]

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1. Experimental Impact Physics Dept. 1433, Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)
2. MS L-35, Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)

We have performed four dynamic impact tests on tantalum to determine its high-pressure yield and viscoelastic properties. Our 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). [copyright] 1994 American Institute of Physics

• DOE Contract Number: AC04-76DP00789
• OSTI ID: 7183307
• Report Number(s): CONF-921145--
• Journal Information: AIP Conference Proceedings (American Institute of Physics); (United States), Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Vol. 309:1; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
DEFORMATION
ELEMENTS
IMPACT SHOCK
MECHANICAL PROPERTIES
METALS
SHOCK WAVES
TANTALUM
TRANSITION ELEMENTS
VERY HIGH PRESSURE
WAVE FORMS
YIELD STRENGTH