Effects of High Magnetic Fields on Solidified Microstructure and Solute Element Distribution in Al-Cu Alloy

doi:-

Abstract

Abstract: The solidification of Al-10.5wt%Cu hypoeutectic alloy was carried out in uniform and gradient high magnetic fields. The influences of high magnetic fields on the morphology of microstructure and solute elements content inside α-Al grains were investigated. The results revealed that the solute element content inside grains is increased by uniform high magnetic fields while the morphology of microstructure keeps almost unchanged. And， these phenomena are analyzed from the viewpoint of the Lorentz force which suppresses the migration of Cu atoms towards the liquid phase at the solid/liquid interface and consequently increases the solute element content inside α-Al grains. For gradient high magnetic fields， the solute content inside α-Al grains changes insignificantly when the direction of gradient high magnetic fields is changed.

Key words: high magnetic fields, solidification, solute element distribution, microstructure morphology, Al-Cu alloy

CLC Number:

TG244⁺.3

YUAN Yi， WANG Qiang， LIU Tie， HE Ji-cheng. Effects of High Magnetic Fields on Solidified Microstructure and Solute Element Distribution in Al-Cu Alloy[J]. Journal of Northeastern University:Natural Science, 2013, 34(1): 57-61.

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