Geometry of dislocations in icosahedral quasicrystals

Quasicrystals are complex metallic alloys that are ductile at high temperatures close to their melting point. It has been early recognized that their plasticity is due to a flux of moving linear defects in all respects similar to dislocations in ordinary crystals. The present paper is an attempt to...

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Bibliographic Details
Published in:Philosophical magazine (Abingdon, England) England), 2006-09, Vol.86 (25-26), p.4139-4151
Main Authors: Gratias, D., Beauchesne, J. T., Mompiou, F., Caillard, D.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Defects and impurities in crystals
microstructure
Deformation and plasticity (including yield, ductility, and superplasticity)
Exact sciences and technology
Indirect evidence of dislocations and other defects (resistivity, slip, creep, strains, internal friction, epr, nmr, etc.)
Mechanical and acoustical properties of condensed matter
Mechanical properties of solids
Physics
Structure of solids and liquids
crystallography
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Summary:Quasicrystals are complex metallic alloys that are ductile at high temperatures close to their melting point. It has been early recognized that their plasticity is due to a flux of moving linear defects in all respects similar to dislocations in ordinary crystals. The present paper is an attempt to propose in a short didactic review a simple synthetic analysis of the basic underlying geometry of quasicrystalline dislocations exemplified with experimental and calculated images of electron microscopy in icosahedral phases.
ISSN:1478-6435
1478-6443
1478-6433
DOI:10.1080/14786430600575435