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Quasicrystals and their crystalline homologues in the Al–Mn–Cu ternary alloys

Ranganathan, S and Singh, Alok K and Tendeloo, van G (1991) Quasicrystals and their crystalline homologues in the Al–Mn–Cu ternary alloys. In: Philosophical Magazine A , 64 (2). pp. 413-427.

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Official URL: http://www.tandfonline.com/doi/abs/10.1080/0141861...


Electron diffraction and high-resolution electron microscopy have been employed to differentiate among icosahedral, decagonal and crystalline particles that occur in as-cast and rapidly solidified Al-Mn-Cu alloys. The resemblance between decagonal quasicrystals and crystals in their electron diffraction patterns is striking. The crystalline structure is based on the orthorhombic ‘Al3Mn’ structure, but also a new monoclinic phase called ‘X’ has been discovered and described here. The present observations are also closely related to the orthorhombic structures in Al60Mn11Ni4. The occurrence of fine-scale twinning and fragmentation into domains explains the complex diffraction effects.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Taylor and Francis Group.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Ms V Mangala
Date Deposited: 23 Feb 2012 06:19
Last Modified: 23 Feb 2012 06:19
URI: http://eprints.iisc.ac.in/id/eprint/43188

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