Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/21931
Title: Nanophase decomposition of a Zn-Al based alloy Zn68Al10Cu22
Authors: Zhu, YH
Lee, WB 
To, S 
Keywords: Ageing
Nanophase stability
Nanostructure
Zn-Al based alloy film
Issue Date: 2004
Publisher: Elsevier
Source: Journal of materials science & technology, 2004, v. 20, no. 6, p. 687-690 How to cite?
Journal: Journal of materials science & technology 
Abstract: The nanostructural evolution and phase transformation of the films of a Zn-Al based alloy (Zn68Al10Cu22 in wt pct) have been studied by using X-ray diffraction and scanning electron microscopy. Nanostructural thin films of the Zn-Al based alloy were produced by using an electron beam deposition technique. It was found that a nanocrystalline phase η'n had a strong preferred crystal orientation at (0002) crystal planes in the as-deposited films. During ageing at 220°C, the decomposition of nanophase η'n started with clustering to form Z-zones, and transitional phase, which was accompanied by an eutectoid decomposition of the η'n phase: η'n→β'eut+T'. Decomposition, such as clustering and the formation of the Z-zones, and the transitional phase etc. were observed in the nanophase β'eut. The formation and the decomposition of the transitional phase of micrometers in size were involved in the decomposition of the main nanophase η'n. The mechanism of the Z-zones formation and the stability of nanophases were discussed.
URI: http://hdl.handle.net/10397/21931
ISSN: 1005-0302
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