Microstructure and shape memory effect of Cu-26.1Zn-4.8Al alloy

Xiaomin Cheng; Feng Huang; Na Li; Xingwen Wu

doi:10.1007/s11595-007-5717-7

Journal of Wuhan University of Technology Materials Science Edition ›› 2008, Vol. 23 ›› Issue (5) : 717 -719. DOI: 10.1007/s11595-007-5717-7

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Microstructure and shape memory effect of Cu-26.1Zn-4.8Al alloy

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Abstract

The influence of processing parameters on the microstructure and shape memory effect of Cu-26.1Zn-4.8Al alloy was investigated. The treated specimens were characterized by metallography, X-ray diffraction (XRD) and transmission electron microscopy (TEM) to explain the mechanism of shape memory effect in Cu-26.1Zn-4.8Al alloy. The results reveal that the shape memory effect is markedly increased by appropriate quenching and ageing process. XRD shows that γ phase precipitates from martensite when aged at higher temperature and γ precipitates impair the shape memory effect. TEM analysis indicate that the substructure of plate-like martensite consists of twins and stacking faults.

Keywords

Cu-Zn-Al alloy / shape memory effect / microstructure / martensite

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Xiaomin Cheng, Feng Huang, Na Li, Xingwen Wu. Microstructure and shape memory effect of Cu-26.1Zn-4.8Al alloy. Journal of Wuhan University of Technology Materials Science Edition, 2008, 23(5): 717-719 DOI:10.1007/s11595-007-5717-7

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