Effect of A-EMS above Liquidus Temperature on Structure Refinement of Al-11%Zn-3%Mg-1%Cu-0.13%Zr Alloy

Abstract:

The application of Annular Electromagnetic Stirring (A-EMS) for production of high-quality slurry has been examined. Al-11%Zn-3%Mg-1%Cu-0.13%Zr alloy was used to investigate the effect of A-EMS at various temperatures above liquidus on structure refinement. The results indicate that the grain size was reduced greatly and the homogeneous structure was achieved. Instead of the case in tradition, the nucleation particles gradually formed and the enhanced grain refining efficiency can be mainly attributed to an instantaneous nucleation of numerous heterogeneous nucleation of Al₃Zr in the superheating melt under A-EMS.

• Periodical: Materials Science Forum (Volume 898)
• Pages: 24-28
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.898.24
• Online since: June 2017
• Authors: Tian Yang Guan*, Zhi Feng Zhang, Yue Long Bai, Ping Wang
• Keywords: A-EMS, Al-Zn-Mg-Cu Alloy, Grain Refinement, Liquidus Temperature

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