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Deformation-induced planar defects in Al–Cu–Fe quasicrystals

Published online by Cambridge University Press:  31 January 2011

J. E. Shield
Affiliation:
Department of Materials Science and Engineering, University of Utah, Salt Lake City, Utah 84112
M. J. Kramer
Affiliation:
Ames Laboratory, United States Department of Energy, and Iowa State University, Ames, Iowa 50011
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Abstract

Planar defects were observed in a hot isostatically pressed Al–Cu–Fe alloy. The defects were determined to be perpendicular to the fivefold direction. They were also found to be regions where the quasiperiodicity in the five-fold direction was disrupted, resulting in a periodicity along this direction of 1.06 nm. The defects were stable up to approximately 750 °C. The defects were determined to be formed by the applied shear forces associated with the consolidation process. The displacement vector of the defects was determined to be in a twofold direction perpendicular to the periodic direction.

Type
Articles
Copyright
Copyright © Materials Research Society 1997

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