DYMAT 2009
Volume 1, 2009
DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
Page(s) 207 - 211
Section Experimental Techniques
Published online 15 September 2009
DYMAT 2009 (2009) 207-211
DOI: 10.1051/dymat/2009028

A high-explosive driven experiment to compare the reflected Hugoniot and the release adiabat curves of Ti-6Al-4V alloy from a 52 GPa shock state

A. Sollier1, V. Bouyer2, J.-B. Maillet1 and C. Voltz3

1  CEA, DAM, DIF, 91297 Arpajon, France
2  CEA, DAM, LE RIPAULT, 37260 Monts, France
3  CEA, DAM, VALDUC, 21120 Is-sur-Tille, France

Published online: 15 September 2009

An experiment has been performed with an explosive device in order to compare the reflected shock Hugoniot and the release adiabat curve of Ti-6Al-4V alloy from a 52 GPa shock state. For this purpose, impedance matching method and progressive acceleration of free surface technics associated with electronic chronometry and simultaneous DLI and VISAR interferometry are used. We find that the release adiabat curve first lies below the reflected Hugoniot in the (P, u) plane, then crosses it around 20 GPa, and finally lies above it for lower pressures. An analysis based on the effects of material strength on the release adiabat is proposed to explain these results.

© EDP Sciences 2009