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http://hdl.handle.net/10397/6930
Title: | Electropulsing-induced phase transformations in a Zn–Al-based alloy | Authors: | Zhu, Y To, S Lee, WB Liu, X Jiang, Y Tang, G |
Issue Date: | Aug-2009 | Source: | Journal of materials research, Aug. 2009, v. 24, no. 8, p. 2661-2669 | Abstract: | Microstructural changes and phase transformations of an electropulsing-treated (EPT) ZA22 alloy wire were studied using scanning electron microscopy and transmission electron-microscopy techniques. Two stages of phase transformation were detected in the EPT alloy: (i) quenching from the as furnace-cooled (FC) state to the final stable state and (ii) up-quenching from the final stable state back to the as FC state through two reverse phase transformations: T′ + η → α + ε and η′[sub T] + ε + α → η′[sub FC]. Electropulsing accelerated phase transformation tremendously. It was at least 1200 times faster than the aging process. The mechanism of the electropulsing-induced phase transformations is discussed from the point of view of Gibbs free energy and electropulsing kinetics. | Keywords: | Alloy Electromigration Phase transformation |
Publisher: | Cambridge University Press | Journal: | Journal of materials research | ISSN: | 0884-2914 | EISSN: | 2044-5326 | DOI: | 10.1557/jmr.2009.0300 | Rights: | © 2009 Materials Research Society The following article "Yaohua Zhu, Sandy To, Wing B. Lee, Xingming Liu, Yanbin Jiang and Guoyi Tang (2009). Electropulsing-induced phase transformations in a Zn–Al-based alloy. Journal of Materials Research, 24(8), pp 2661-2669. doi:10.1557/jmr.2009.0300." is available at http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=7949893 |
Appears in Collections: | Journal/Magazine Article |
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Zhu_Electropulsing-induced_Zn-Al-based_alloy.pdf | 1.83 MB | Adobe PDF | View/Open |
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