Consolidation and high strain rate mechanical behavior of nanocrystalline tantalum powder
Document Type
Article
Publication Date
1-1-1999
Abstract
High ductility and strength exhibited in nanograined materials can potentially be exploited in explosively formed penetrator liner applications. Both coarse and nanocrystalline tantalum powder were consolidated by Plasma Pressure Compaction (P2C) to study the effect of grain size on dynamic compression properties. The powders were consolidated rapidly with 1 minute of isothermal holding time to retain initial microstructure. The P2C consolidated specimens were cut by electric discharge machining (EDM), polished for SEM characterization, and tested in dynamic compression using a Kolsky apparatus. The effect of grain size on yield stress and strain was investigated at various strain rates for a coarse grained and a nanograined specimen. Especially, the high strain rate response of nanocrystalline tantalum is discussed in this paper.
Publication Title
Nanostructured Materials
Recommended Citation
Yoo, S.,
Sudarshan, T.,
Sethuram, K.,
Subhash, G.,
&
Dowding, R.
(1999).
Consolidation and high strain rate mechanical behavior of nanocrystalline tantalum powder.
Nanostructured Materials,
12(1), 23-28.
http://doi.org/10.1016/S0965-9773(99)00059-8
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/7640