The Effects of Al-Ca Compounds on Grain Refinement of Mg-Ca Alloys

Abstract:

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In the present work, Al-Ca metallic compound was prepared in Mg-Ca alloys and the effects of Al-Ca metallic compound and different Al/Ca values on the grain refinement of Mg-Ca alloys were investigated by scanning electron microscopy and X-ray diffraction, and the mechanism of grain refinement of Mg-Ca alloys was discussed. The results showed that the grain size of Mg-0.5Ca alloy was obviously reduced from 550μm to 230μm due to the addition of Al. Al2Ca phase existed in these alloys and its morphology evolved from granular to rod-like. It is regarded as the main factor for the grain refinement.

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Periodical:

Edited by:

Yafang Han, Fusheng Pan, Jianmao Tang, Chungen Zhou

Pages:

348-354

DOI:

10.4028/www.scientific.net/MSF.686.348

Citation:

S. T. Xiong et al., "The Effects of Al-Ca Compounds on Grain Refinement of Mg-Ca Alloys", Materials Science Forum, Vol. 686, pp. 348-354, 2011

Online since:

June 2011

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Price:

$35.00

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