Plastic deformation of wadsleyite: III. Interpretation of dislocations and slip systems |
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| Authors: | E Thurel J Douin P Cordier |
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| Institution: | 1.Laboratoire de Structure et Propriétés de l'Etat Solide, UMR CNRS 8008, Université des Sciences et Technologies de Lille, France e-mail: Patrick.Cordier@univ-lille1.fr Tel.: +33 320 43 43 41 Fax: +33 320 43 65 91,FR;2.Laboratoire d'Etude des Microstructures, UMR 104 CNRS/ONERA, France,FR |
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| Abstract: | Linear anisotropic elasticity has been applied to interpret the dislocation stability and ease of slip in wadsleyite. It
is shown that wadsleyite is very isotropic from the elastic point of view. The influence of crystal chemistry and bonding
on the choice of the slip plane is discussed. It is shown that slip is predominantly achieved on planes that do not shear
Si–O bonds. It is suggested that dissociation of dislocations is essential in determining the ease of slip among the various
slip systems.
Received: 15 July 2002 / Accepted: 14 February 2003
Acknowledgements High-pressure experiments were performed at the Bayerisches Geoinstitut under the EU IHP – Access to Research Infrastructures
Programme (Contract no. HPRI-1999-CT-00004 to D.C. Rubie). Enlightening discussions with A. Coujou and J. Rabier are gratefully
acknowledged. |
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| Keywords: | Linear anisotropic elasticity Dislocation stability Slip planes |
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