Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/25016
Title: Exothermic reaction in eutectoid Zn-Al based alloys
Authors: Zhu, YH
Man, HC 
Lee, WB 
Keywords: Exothermic reaction
Scanning electron microscopy
Zn-Al alloys
Issue Date: 1999
Publisher: Elsevier
Source: Materials science and engineering. A, Structural materials : properties, microstructure and processing, 1999, v. 268, no. 1-2, p. 147-153 How to cite?
Journal: Materials science and engineering. A, Structural materials : properties, microstructure and processing 
Abstract: Both solution treated and quench-aged eutectoid Zn-Al based alloys (ZnAl20Cu3Si2 and ZnAl22Cu2 in wt.%) were studied by differential scanning calorimeter (DSC), X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques. An exothermic phenomenon was observed at the early stage of ageing. Similar behavior was also found for the cast eutectoid Zn-Al alloy. The activation energy for the exothermic phenomenon was calculated, which was in a good agreement with that derived from X-ray diffraction examination for the decomposition of the supersaturated β′s phase in the eutectoid Zn-Al based alloy. It is concluded that the decomposition of the β′s phase is an exothermic solid state reaction in the eutectoid Zn-Al based alloys.
URI: http://hdl.handle.net/10397/25016
ISSN: 0921-5093
EISSN: 1873-4936
DOI: 10.1016/S0921-5093(99)00072-6
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