Influence of Y Element on Microstructure and Mechanical Properties of ZK60 Alloy

Yong Li; Fang Xu; Hui Ping Liu

doi:10.4028/www.scientific.net/AMR.284-286.1568

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 284-286Influence of Y Element on Microstructure and...

Influence of Y Element on Microstructure and Mechanical Properties of ZK60 Alloy

Abstract:

Mg-4.9Zn-0.9Y-0.7Zr alloy and Mg-4.9Zn-0.7Zr used as compared alloy were prepared by ingot metallurgy method. The influence of Y addition on microstructure and properties was studied. Phase analysis, microstructure and morphology of second phases were investigated by XRD, OM and SEM. The component and morphology of the second phases was analyzed by EDAX and TEM. The results showed that, Y was an effective element strengthening Mg-Zn-Zr alloy, a large number of Mg₃Zn₆Y phase was formed due to the addition of Y. During the process of hot rolling, Mg₃Zn₆Y phase was pulverized into large amount of dispersion particles, which pinned dislocation effectively, so ultimate strength and yield strength at room temperature were improved, as well as good plasticity was remained.

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Periodical:

Advanced Materials Research (Volumes 284-286)

Pages:

1568-1573

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.284-286.1568

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Online since:

July 2011

Authors:

Yong Li, Fang Xu, Hui Ping Liu

Keywords:

Magnesium Alloy, Mg₃Zn₆Y Phase, Yttrium

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