Dynamics of a dislocation bypassing an impenetrable precipitate: the Hirsch mechanism revisited

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dc.creatorHatano, Takahiro
dc.date2005-11-15
dc.date2006-05-08
dc.date.accessioned2026-07-07T06:46:07Z
dc.date.available2026-07-07T06:46:07Z
dc.descriptionDynamical process where an edge dislocation in fcc copper bypasses an impenetrable precipitate is investigated by means of molecular dynamics simulation. A mechanism which is quite different from the Orowan mechanism is observed, where a dislocation leaves two prismatic loops near a precipitate: i.e. the Hirsch mechanism. It is found that the critical stress for the Hirsch mechanism is almost the same with the Orowan stress, while the spatial inhomogeneity of the shear stress is essential to the Hirsch mechanism. We also find that the repetition of the Hirsch mechanism does not increase the critical stress.
dc.description4 pages
dc.identifierhttps://arxiv.org/abs/cond-mat/0511358
dc.identifierhttp://arxiv.org/abs/cond-mat/0511358
dc.identifierPhys. Rev. B 74, 020102(R) (2006)
dc.identifierdoi:10.1103/PhysRevB.74.020102
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/103238
dc.subjectMaterials Science
dc.titleDynamics of a dislocation bypassing an impenetrable precipitate: the Hirsch mechanism revisited
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