Meyers, M. A. and Gregori, F. and Kad, B. K. and Schneider, M. S. and Kalantar, D. H. and Remington, B. A. and Wark, J. S. and Boehly, T. and Ravichandran, G. (2002) Plastic Deformation in Laser-Induced Shock Compression of Monocrystalline Copper. In: Shock compression of condensed matter--2001 : proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter held in Atlanta, Georgia, June 24-29, 2001. American Institute of Physics Conference Proceedings (620). American Institute of Physics , Melville, NY, pp. 619-622. ISBN 0-7354-0068-7 http://resolver.caltech.edu/CaltechAUTHORS:MEYaipcp02
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Copper monocrystals were subjected to shock compression at pressures of 10–60 GPa by a short (3 ns initial) duration laser pulse. Transmission electron microscopy revealed features consistent with previous observations of shock-compressed copper, albeit at pulse durations in the µs regime. The results suggest that the defect structure is generated at the shock front. A mechanism for dislocation generation is presented, providing a realistic prediction of dislocation density as a function of pressure. The threshold stress for deformation twinning in shock compression is calculated from the constitutive equations for slip, twinning, and the Swegle-Grady relationship.
|Item Type:||Book Section|
|Additional Information:||©2002 American Institute of Physics Research supported by the Department of Energy Grants DEFG0398DP00212 and DEFG0300SF2202.|
|Subject Keywords:||high-pressure effects; shock waves; plastic deformation; copper; dislocations; twinning|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||05 Jun 2006|
|Last Modified:||26 Dec 2012 08:54|
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