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Phase transformation and microstructure behaviour of Cu-Al-Ni shape memory alloys incorporated with cobalt addition

Wee, Y. C. and Abubakar, T. and Hamzah, Esah and Saud, Safaa N. (2015) Phase transformation and microstructure behaviour of Cu-Al-Ni shape memory alloys incorporated with cobalt addition. Jurnal Teknologi, 74 (10). pp. 53-56. ISSN 1279-696

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Official URL: http://dx.doi.org/10.11113/jt.v74.4833

Abstract

The effect of Co addition on phase transformation temperatures and microstructures of Cu-Al-Ni SMA were investigated via differential scanning calorimetry, field emission scanning electron microscopy corresponding with energy dispersive spectroscopy and x-ray diffraction. The results revealed that the β1’ and γ1’ phases’ morphology and orientation were varied after the addition of Co along with the presence of intermetallic compounds known as γ2. This phase was indicated using the EDS and XRD is related to the intermetallic compound of Al75Co22Ni3. In addition, the phase transformation temperatures tend to increase with the addition of Co and this enhancement is mainly attributed to the variation of phase morphology and the existence of γ2 precipitates.

Item Type:Article
Uncontrolled Keywords:Cu-Al-Ni-Co, DSC, shape memory alloy, XRD
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:58819
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 04:08
Last Modified:12 Dec 2021 03:37

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