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Rational approximants to the decagonal phase in Al-Mn-M (M=Ni,Cu,Zn) systems

Alok, Singh and Ranganathan, S (1994) Rational approximants to the decagonal phase in Al-Mn-M (M=Ni,Cu,Zn) systems. In: Eighth International Conference on Rapidly Quenched and Metastable Materials, 22-27 Aug. 1993, Sendai, Japan, pp. 754-757.

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Abstract

A series of alloys $(Al_{60}Mn_{11}Ni_4$, $A_{76}Mn_{15.5}Cu_{8.5}, Al_{65}Mn_{15}Cu_{20}, Al_{24}Mn_5Zn$ and $Al_{12}Mn_{2.9}Zn)$ have been prepared in as-cast and rapidly solidified conditions. The occurrence of icosahedral and decagonal quasicrystalline phases as well as rational approximants to the decagonal phase has been established by electron microscopy. This comparative study highlights the similarities and differences among the closely related crystalline phases serving as rational approximants to the decagonal phase in the three systems Al-Mn-Ni, Al-Mn-Cu and Al-Mn-Zn. Structural features as well as the propensity for twinning of the crystals have been characterized

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to Elsevier Sequoia.
Keywords: aluminium alloys;copper alloys;manganese alloys;melt spinning;nickel alloys;quasicrystals;rapid solidification;transmission electron microscope examination of materials;twinning;zinc alloys
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 08 Nov 2007
Last Modified: 19 Sep 2010 04:38
URI: http://eprints.iisc.ernet.in/id/eprint/11054

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