Dynamic behavior of fully dense molybdenum

Conference · Tue Jan 01 00:00:00 EST 1991

DOI:https://doi.org/10.1016/B978-0-444-89732-9.50095-9· OSTI ID:5533390

Furnish, M D; Chhabildas, L C ^[1]; Steinberg, D J ^[2]; Gray, III, G T ^[3]

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1. Sandia National Labs., Albuquerque, NM (USA)
2. Lawrence Livermore National Lab., CA (USA)
3. Los Alamos National Lab., NM (USA)

We have performed a series of dynamic impact tests on molybdenum to determine its high-pressure yield and viscoelastic properties. Nine experiments, performed with a compressed gas gun and VISAR diagnostics, produced a variety of combinations of shocks, reshocks and releases. Pressure ranges from 6.5 to 15 GPa were investigated, and specimen thicknesses ranged from 6 to 13 mm. The Hugoniot elastic limit appears to be independent of sample thickness and final stress levels over the ranges reported in this study. Strengths at the HEL and the Hugoniot state, approximately 1.3 GPa, are within the range observed for lower strain rates of 10{sup {minus}3} sec-1 to 5{center dot}10{sup 3} sec{sup {minus}1}. As with other metals, release waves do not show clean elastic-plastic behavior. Lagrangian sound velocities for singly shocked states are 6.30 to 7.40 km/sec over the pressure range tested. Strain tests behaves as approximately as the fourth power of stress, although it appears to decrease with propagation distance over the specimen thickness range used. 5 refs., 6 figs., 1 tab.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5533390
• Report Number(s): SAND-91-0081C; CONF-9107105-44; ON: DE91014902
• Resource Relation: Conference: 1991 American Physical Society (APS) conference on shock compression of condensed matter, Williamsburg, VA (USA), 17-20 Jul 1991
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
MOLYBDENUM
ELASTICITY
IMPACT TESTS
STRAIN RATE
THICKNESS
YIELD STRENGTH
DIMENSIONS
ELEMENTS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
METALS
TENSILE PROPERTIES
TESTING
TRANSITION ELEMENTS
360103* - Metals & Alloys- Mechanical Properties
360104 - Metals & Alloys- Physical Properties