| Numéro |
J. Phys. IV France
Volume 01, Numéro C3, Octobre 1991
DYMAT 1991 - 3rd International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
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| Page(s) | C3-123 - C3-130 | |
| DOI | https://doi.org/10.1051/jp4:1991316 | |
J. Phys. IV France 01 (1991) C3-123-C3-130
DOI: 10.1051/jp4:1991316
REACTION SYNTHESIS/DYNAMIC COMPACTION OF TITANIUM CARBIDE AND TITANIUM DIBORIDE
M.A. MEYERS1, J.C. LA SALVIA1, L.W. MEYER2, D. HOKE1 and A. NIILER31 Department of Applied Mechanics and Engineering Sciences, University of California, San Diego, La Jolla, CA 92093-0411, U.S.A.
2 Fraunhofer Institut für Angewandte Materialforschung, Bremen, Germany
3 U.S. Army Ballistic Research Laboratory, Aberdeen, MD, U.S.A.
Abstract
Titanium carbide and titanium diboride were synthesized by self-propagating combustion reactions and densified by a high-speed forging technique, in which a hammer strikes the hot and porous ceramic ([MATH]) at velocities in the range 5 - 15 m/s. Compacts with densities higher than 96% of the theoretical density and diameters close to 10 cm were produced by this method. Optical and scanning electron microscopy of the consolidated material were carried out, revealing a grain size of approximately 44 µm for TiC and 15 µm for TiB2 ; these grains were equiaxed, indicating that crystallization (or recrystallization) occurred after the densification process. The quasistatic and dynamic compressive strengths were established and compared to those of hot-pressed material produced by CERCOM. For TiB2, the strengths were approximately 1.8 GPa, while for TiC the quasistatic (10-3 s-1) and dynamic (102 s-1) strengths were 1.7 and 2.2 GPa, respectively.
© EDP Sciences 1991