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Title: Destabilization of dislocation dipole at high velocity
Authors: Wang, Jian
Woo, Chung-ho
Huang, Hanchen
Subjects: Dislocation motion
Molecular dynamics method
Dislocation dipoles
Issue Date: 26-Nov-2001
Publisher: American Institute of Physics
Source: Applied physics letters, 26 Nov. 2001, v. 79, no. 22, p. 3621-3623.
Abstract: Under mechanical deformation of very high strain rates, it is expected that dislocations may move very fast (being subsonic, transonic, or even supersonic). As a result, two dislocations may approach each other at high velocities. Our earlier analyses of linear elasticity indicate that a dipole is destabilized when the approaching velocity is high enough—even below the speed of sound. In this letter, using the molecular dynamics method, we demonstrate that a dipole indeed can be destabilized above a critical velocity, and stable below that.
Rights: © 2001 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in J. Wang, C. H. Woo & H. Huang Appl. Phys. Lett. 79, 3621 (2001) and may be found at
Type: Journal/Magazine Article
DOI: 10.1063/1.1421425
ISSN: 0003-6951 (print)
1077-3118 (online)
Appears in Collections:ME Journal/Magazine Articles

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