| Autor: |
Reisman, D. B., Wolfer, W. G., Elsholz, A., Furnish, M. D. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 6/1/2003, Vol. 93 Issue 11, p8952, 6p, 1 Black and White Photograph, 1 Diagram, 9 Graphs |
| Abstrakt: |
We have performed quasi-isentropic compression experiments on radiation-damaged stainless steel. The samples were dynamically loaded by Sandia National Laboratory’s Z accelerator with a ramp compression wave. Sample/window interface velocities were recorded with VISAR. The velocity histories suggest a sudden volume reduction of the material above 40 kbar caused by the collapse of nanosized voids. This is predicted by a theoretical model of void collapse based on the emission of vacancy-type dislocations loops. We compare the results of these experiments to hydrodynamic calculations performed using a constitutive model which is derived from the atomistic void collapse mechanism. © 2003 American Institute of Physics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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