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Article Dans Une Revue Metallurgical and Materials Transactions A Année : 2014

First order pyramidal slip of 1/3 <1-210> screw dislocations in zirconium

Résumé

Atomistic simulations, based either on an empirical interatomic potential or on ab initio calculations, are used to study the pyramidal glide of a 1/3 <1-210> screw dislocation in hexagonal close-packed zirconium. Generalized stacking fault calculations reveal a metastable stacking fault in the first order pyramidal {10-11} plane, which corresponds to an elementary pyramidal twin. This fault is at the origin of a metastable configuration of the screw dislocation in zirconium, which spontaneously appears when the dislocation glides in the pyramidal plane.
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Dates et versions

hal-01071018 , version 1 (04-10-2014)

Identifiants

Citer

Nermine Chaari, Emmanuel Clouet, David Rodney. First order pyramidal slip of 1/3 <1-210> screw dislocations in zirconium. Metallurgical and Materials Transactions A, 2014, 45 (13), pp.5898. ⟨10.1007/s11661-014-2568-7⟩. ⟨hal-01071018⟩
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