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Transmission electron microscope observations of rectangular dislocation networks in an Al70Co15Ni15 decagonal quasicrystal

Published online by Cambridge University Press:  31 January 2011

Yanfa Yan  and
Renhui Wang
Yanfa Yan
Affiliation:
Laboratory of Materials Physics, Department of Physics, Wuhan University, 430072 Wuhan, and Beijing Laboratory of Electron Microscopy, Academia Sinica, P.O. Box 2724, 100080 Beijing, People's Republic of China
Renhui Wang
Affiliation:
Laboratory of Materials Physics, Department of Physics, Wuhan University, 430072 Wuhan, and Beijing Laboratory of Electron Microscopy, Academia Sinica, P.O. Box 2724, 100080 Beijing, People's Republic of China
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Abstract

The electron diffraction contrast of two types of rectangular dislocation networks in an Al70Co15Ni15 decagonal quasicrystal has been analyzed. One type of dislocation network consists of two dislocation sets whose Burgers vectors are parallel to the tenfold axis A10 and a twofold axis A2D. The other type of dislocation network consists of two dislocation sets whose Burgers vectors are parallel to the A10 and the other twofold axis of A2P. The characteristics of the diffraction contrast of the dislocation networks in the Al–Co–Ni decagonal phase are similar to those in conventional crystals.

Type
Articles
Information
Journal of Materials Research , Volume 8 , Issue 2 , February 1993 , pp. 286 - 290
Copyright
Copyright © Materials Research Society 1993

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