Regensburg 2013 – scientific programme
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MM: Fachverband Metall- und Materialphysik
MM 13: Topical Session: Quasicrystals & Complex Metallic Alloys III
MM 13.3: Talk
Monday, March 11, 2013, 16:15–16:30, H25
Metadislocation core structure in the complex metallic alloy Al13Co4 — •Marc Heggen and Michael Feuerbacher — Peter Grünberg Institut, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany
We have analysed metadislocations in the complex alloy Al13Co4. The core structure is studied using aberration-corrected high-resolution scanning transmission electron microscopy. Different types of metadislocations with Burgers vectors of b = +/-tau−n b (0 1 0) (n = 3, 4) are found which are associated to four and six planar defects, respectively. They are escorted by phason defects and move, in contrast to metadislocations in most other complex alloys, by pure glide.