Orthorhombic crystalline approximants of the Al-Mn-Cu decagonal quasicrystal
- 1 July 1992
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine Part B
- Vol. 66 (1) , 117-124
- https://doi.org/10.1080/13642819208221299
Abstract
Two orthorhombic Al–Mn–Cu phases, π-Al20Mn3Cu2 and Y-AlMnCu, with large lattice parameters were found to coexist with the decagonal quasicrystal in Al10Mn3Cu0.1-0.2 alloys and they were shown to be crystalline approximants of the latter. These two phases have similar structural subunits and a close orientation relationship. They twin easily and the twin boundary of the π phase is a layer of the π phase and vice versa. Therefore, these two phases intergrow frequently and both translational and rotational twin domains are abundant.Keywords
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