| Autor: |
Mcclellan, Kenneth J., Swift, Damian C., Paisley, Dennis L., Koskelo, Aaron C. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2004, Vol. 706 Issue 1, p593-596, 4p |
| Abstrakt: |
We are investigating interactions between shocks and grain boundaries in the anisotropic alloy NiAl; as part of this work, we need to know the shock response of single crystals. The equation of state (EOS) and elasticity were predicted using ab initio quantum mechanics. NiAl crystals were obtained from GE, and also prepared locally, and cut to thickesses between about 100 and 500 microns. Laser-driven flyer impact experiments were used to verify the EOS and to measure the elastic precursor wave as a function of crystal orientation. Shocks induced by direct laser irradiation were used to investigate the elastic precursor and to demonstrate that the imaging VISAR system had a temporal resolution adequate to distinguish between different orientations. A single-crystal plasticity model is under development to design and interpret experiments on bicrystals. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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