Dislocation jumping over the sound barrier in tungsten

Qikai Li, San-Qiang Shi

Research output: Journal article publicationJournal articleAcademic researchpeer-review

37 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)3069-3071
Number of pages3
JournalApplied Physics Letters
Issue number17
Publication statusPublished - 29 Apr 2002

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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