Nanostructured icosahedral phase formation in Al70Cu20Fe10 by mechanical alloying: comprehensive study

Barua, P. ; Murty, B. S. ; Mathur, B. K. ; Srinivas, V. (2002) Nanostructured icosahedral phase formation in Al70Cu20Fe10 by mechanical alloying: comprehensive study Journal of Applied Physics, 91 (8). 5353_1-5353_7. ISSN 0021-8979

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Official URL: http://jap.aip.org/resource/1/japiau/v91/i8/p5353_...

Related URL: http://dx.doi.org/10.1063/1.1464206

Abstract

A systematic study on the formation and the stability of Al70Cu20 Fe10 quasicrystalline alloy has been carried out through mechanical alloying. The influence of the milling parameters, sequence of additive elements, and heat treatment on the formation of icosahedral phase has been investigated through x-ray diffraction analysis and transmission electron microscopy. A combination of milling and heat treatment of Al70Cu20Fe10 composition resulted in the formation of a single icosahedral phase (i-phase) quasicrystal with face-centered structure. We present evidence that suggests the i phase is of a nanoquasicrystalline nature. From the present investigations, we propose an i-phase formation mechanism in Al-Cu-Fe system.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Aluminium Alloys; Copper Alloys; Iron Alloys; Nanostructured Materials; Quasicrystals; Mechanical Alloying; Heat Treatment; X-ray Diffraction; Transmission Electron Microscopy; Powder Metallurgy
ID Code:64065
Deposited On:04 Oct 2011 08:21
Last Modified:04 Oct 2011 08:21

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