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Instability of Al‐Cu‐Co single quasicrystals at low temperature
Author(s) -
Bogdanowicz W.
Publication year - 2005
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200410371
Subject(s) - quasicrystal , annealing (glass) , crystallography , decomposition , bar (unit) , optical microscope , materials science , electron microscope , microscopy , scanning electron microscope , chemistry , optics , composite material , physics , organic chemistry , meteorology
Decomposition process of the Al‐Cu‐Co single quasicrystals (falling apart into small pieces) after annealing at 100 °C for 20 h was studied by X‐ray topography, high‐resolution electron microscopy, X‐ray diffractometry and optical microscopy. It was found that the decomposition of the single quasicrystals is preceded by the creation of a large number of antiphase microdomains and the deformation of the clusters occurs in the two‐fold directions of [01 $\bar 1$ 00] type. The decomposition begins with the propagation of cracks in the directions of [01 $\bar 1$ 00] type. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)