First order pyramidal slip of 1/3 <1-210> screw dislocations in zirconium
Materials Science
2015-08-07 v1
Abstract
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.
Keywords
Cite
@article{arxiv.1410.1121,
title = {First order pyramidal slip of 1/3 <1-210> screw dislocations in zirconium},
author = {Nermine Chaari and Emmanuel Clouet and David Rodney},
journal= {arXiv preprint arXiv:1410.1121},
year = {2015}
}
Comments
symposium "Multiscale perspectives on plasticity in hcp metals", TMS 2014 annual meeting, Metallurgical and Materials Transactions A (2014)