Dynamical behavior of tantalum
- Sandia National Labs., Albuquerque, NM (United States)
- Lawrence Livermore National Lab., CA (United States)
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).
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 139478
- Report Number(s):
- SAND--93-0427C; CONF-930676--10; ON: DE93017877
- Country of Publication:
- United States
- Language:
- English
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