Philosophical Magazine B · 1992 · 39 citations · 12 references
Natural SciencesMaterials EngineeringMaterials ScienceCondensed Matter PhysicsCrystal StructureSolid State PhysicsAlloysCrystal LatticeCrystal SymmetryCrystal SystemsCrystalline MaterialsCrystallographyCrystalline StructureCrystallographic Twinning DirectionsLattice ParametersOrthorhombic Crystal LatticesQuasi-crystalsQuasicrystals
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.
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