Interaction between Zr Addition and Intensive Melt Shearing on Grain Refinement of Commercial Purity Magnesium

Guo Sheng Peng; Yun Wang; Ming Xu Xia; Zhong Yun Fan

doi:10.4028/www.scientific.net/MSF.790-791.167

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HomeMaterials Science ForumMaterials Science Forum Vols. 790-791Interaction between Zr Addition and Intensive Melt...

Interaction between Zr Addition and Intensive Melt Shearing on Grain Refinement of Commercial Purity Magnesium

Abstract:

The interaction between Zr addition and intensive melt shearing on grain refinement of commercial purity Mg has been investigated experimentally. It was found that, without intensive melt shearing, the grain structure of Mg is changed from columnar grains to equiaxed grains with the increase in Zr concentration. However, with intensive melt shearing, the grain structure of Mg undergoes a complex change as a function of Zr concentration; for instance, the grain structure showed equiaxed grains at 0.1wt. % Zr concentration, while it was changed to columnar grains at 1wt. % Zr concentration. It was noted that, particularly, under the intensive melt shearing condition, the grain size of Mg with minor addition of Zr (0.1%) was further decreased to 134 ± 4 μm compared with that of Mg without Zr addition (217 ± 15 μm).

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Periodical:

Materials Science Forum (Volumes 790-791)

Pages:

167-172

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.790-791.167

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Online since:

May 2014

Authors:

Guo Sheng Peng*, Yun Wang, Ming Xu Xia, Zhong Yun Fan

Keywords:

Grain Refining, Magnesium Alloy, Microstructure, Solidification

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