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An analysis of elementary dislocations in icosahedral Al-Pd-Mn by Large Angle Convergent-Beam Electron Diffraction (LACBED)

Published online by Cambridge University Press:  01 October 2002

D. Caillard ,
J.-P. Morniroli ,
G. Vanderschaeve ,
L. Bresson  and
D. Gratias
D. Caillard*
Affiliation:
CEMES-CNRS, 29 rue Jeanne Marvig, BP 4347, 31055 Toulouse Cedex 4, France
J.-P. Morniroli
Affiliation:
Laboratoire de Métallurgie Physique et Génie des matériaux (UMR CNRS 8517) , USTL, 59655 Villeneuve d'Ascq, France
G. Vanderschaeve
Affiliation:
CEMES-CNRS, 29 rue Jeanne Marvig, BP 4347, 31055 Toulouse Cedex 4, France
L. Bresson
Affiliation:
LEM-CNRS/Onera (UMR 104) , 29 avenue de la Division Leclerc, 92322 Châtillon Cedex, France
D. Gratias
Affiliation:
LEM-CNRS/Onera (UMR 104) , 29 avenue de la Division Leclerc, 92322 Châtillon Cedex, France
*
caillard@cermes.fr
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Abstract

Large Angle Convergent Beam Electron Diffraction (LACBED) experiments on dislocations located in the mirror planes of icosahedral AlPdMn single grains show that – as previously inferred from standard image contrast technique – the direction of the Burgers vector is perpendicular to the mirror plane of movement, thus confirming the fact that climb should be an important process for the plasticity mechanisms in icosahedral quasicrystals.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 20 , Issue 1 , October 2002 , pp. 3 - 8
Copyright
© EDP Sciences, 2002

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References

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