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Title: Dislocation jumping over the sound barrier in tungsten
Authors: Li, Qikai
Shi, San-qiang
Subjects: Dislocation motion
Molecular dynamics method
Issue Date: 29-Apr-2002
Publisher: American Institute of Physics
Source: Applied physics letters, 29 Apr, 2002, v. 80, no. 17, p. 3069-3071.
Abstract: It is commonly believed that dislocations cannot surmount the sound barrier at the shear wave velocity. This letter presents results of molecular dynamics simulation showing the contrary, namely that a stationary dislocation can be accelerated above the sound barrier provided that the theoretical shear strength is reached at the dislocation core and the total energy of a subsonic perfect dislocation is sufficiently high to cause its dissociation into transonic partial dislocations.
Rights: © 2002 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 Q. Li & S-Q Shi, Appl. Phys. Lett. 80, 3069 (2002) and may be found at
Type: Journal/Magazine Article
DOI: 10.1063/1.1473865
ISSN: 0003-6951 (print)
1077-3118 (online)
Appears in Collections:ME Journal/Magazine Articles

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