Elastic energy of metadislocations in complex metallic alloys

A parameterized expression for the Burgers vectors of metadislocations is derived. On this basis we calculate the elastic line energy of metadislocations and demonstrate that the experimentally observed occurrence of Fibonacci relations between the members of a metadislocation series is due to energ...

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Bibliographic Details
Published in:Acta materialia 2012-02, Vol.60 (4), p.1703-1711
Main Authors: Feuerbacher, M., Heggen, M.
Format: Article
Language:English
Subjects:
Applied sciences
Burgers vector
Complex metallic alloys
Defects
Exact sciences and technology
Metadislocations
Metals. Metallurgy
Planar defects
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Summary:A parameterized expression for the Burgers vectors of metadislocations is derived. On this basis we calculate the elastic line energy of metadislocations and demonstrate that the experimentally observed occurrence of Fibonacci relations between the members of a metadislocation series is due to energy minimization. All complex metallic alloy phases in which metadislocations have been experimentally observed are considered.
ISSN:1359-6454
1873-2453
DOI:10.1016/j.actamat.2011.12.011