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Effect of Sr Addition on the Microstructure of Mg-6Zn-2Al-2Ca Alloy

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Abstract:

The effect of Sr addition on microstructure evolution of Mg-6Zn-2Al-2Ca-xSr (x=0.5, 1, 2, 3）alloys were investigated by using scanning electron microscope (SEM), X-ray diffraction (XRD) and optical microscope. The result show that Sr constitutional under cooling can significantly refined microstructure of alloys and formed rod-shaped Al4Sr phase in Mg-6Zn-2Al-2Ca alloys, while alloy microstructure turned to be coarse with further increase in Sr content. The addition of Sr slows down the precipitation power of Mg-6Zn-2Al-2Ca alloys and inhabits the β phase continuous precipitation.

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Periodical:

Advanced Materials Research (Volumes 391-392)

Pages:

993-997

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.391-392.993

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Online since:

December 2011

Authors:

Jun Hua You, Wei Gang Zhang, Ke Qiang Qiu

Keywords:

Alloying Element, Magnesium Alloy, Microstructure

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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