Deformation twins in a shock-loaded Ta-2.5wt%W precursor plate and a recovered, Ta-2.5wt%W explosively formed penetrator
- Univ. of Texas, El Paso, TX (United States). Dept. of Metallurgical and Materials Engineering
- Univ. of California, San Diego, La Jolla, CA (United States). Dept. of Applied Mechanics and Engineering Sciences
The effect of shock-loading on microstructural evolution and mechanical response of various metals and alloys has been studied for almost five decades. However, BCC metals and alloys, with the exception of iron and ferritic steels, have received much less attention than have FCC materials. Recently, high density BCC materials like tantalum and tantalum-tungsten alloys have generated a lot of interest due to their armor-defeating capability in such applications as shaped charges and explosively formed penetrators (EFPs). High-explosive generated shock waves interact with the metallic liners and form these penetrators in flight. Consequently, the shock-wave parameters and initial liner microstructures can play an important role in both macro- and microstructural development of these ballistic devices. In this study, the authors observed deformation twins in an annealed, shock-loaded Ta-2.5wt%W precursor plate and, for the first time,m in the tail section of a soft-recovered, six-finned Ta-2.5wt%W EFP.
- OSTI ID:
- 389783
- Journal Information:
- Scripta Materialia, Vol. 35, Issue 8; Other Information: PBD: 15 Oct 1996
- Country of Publication:
- United States
- Language:
- English
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