Engel M, Trebin HR (2005)
Publication Language: English
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2005
Publisher: Taylor & Francis: STM, Behavioural Science and Public Health Titles / Taylor & Francis
Book Volume: 85
Pages Range: 2227-2247
Journal Issue: 20
DOI: 10.1080/14786430500070669
The approximants xi, xi' and xi'(n) n of the Al-Mn-Pd quasi-crystal display interesting plastic properties, such as, for example, phason-induced deformation processes and metadislocations. Here we demonstrate that the phases and their deformed or defect states can be described by a simple projection formalism in three-dimensional space-not, as usual, in four to six dimensions. Using this method we can interpret the microstructures observed with electron microscopy as phasonic phase boundaries. Furthermore, we determine the metadislocations of lowest energy and relate them uniquely to experimentally observed ones. Since moving metadislocations in the xi' phase can create new phason planes, we suggest a dislocation-induced phase transition from xi' to xi'(n). The methods developed in this paper can also be applied for various other complex metallic alloys.
APA:
Engel, M., & Trebin, H.-R. (2005). A unified projection formalism for the Al-Pd-Mn quasi-crystal Xi-approximants and their metadislocations. Philosophical Magazine, 85(20), 2227-2247. https://doi.org/10.1080/14786430500070669
MLA:
Engel, Michael, and Hans-Rainer Trebin. "A unified projection formalism for the Al-Pd-Mn quasi-crystal Xi-approximants and their metadislocations." Philosophical Magazine 85.20 (2005): 2227-2247.
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