HRTEM Observation of β’-Phase in Cu-40.26 at.% Zn Alloy


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There have been many reports about the bainitic phase decomposition of annealed Cu-Zn alloy. During annealing at 523 K, the hardness of this alloy increased at the early stage of annealing, although the β-phase couldn't be observed in the matrix of β'-phase (CsCl). The crystal structure of β' phase, thus, was investigated by a high-resolution transmission electron microscopy (HRTEM) to find its structural change. As the result, the striations were observed in the HRTEM image of matrix at the early stage of annealing. The selected area diffraction pattern was also obtained from this area, and it showed the extra streaks which couldn't be explained by the normal CsCl structure of the β’-phase.



Materials Science Forum (Volumes 561-565)

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Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee




M. Nishiyama et al., "HRTEM Observation of β’-Phase in Cu-40.26 at.% Zn Alloy", Materials Science Forum, Vols. 561-565, pp. 2305-2308, 2007

Online since:

October 2007




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[10] α zone of the alloy annealed for 1. 92ks. Fig. 5 A schematic illustration showing pairs of the α-phase according to our previous report.

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