Microstructural Evolution of Electromagnetically Stirred Al Alloy during Isothermal Reheating in Solid-Liquid Region

Dock Young Lee; Ki Bae Kim; Do Hyang Kim

doi:10.4028/www.scientific.net/MSF.486-487.338

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HomeMaterials Science ForumMaterials Science Forum Vols. 486-487Microstructural Evolution of Electromagnetically...

Microstructural Evolution of Electromagnetically Stirred Al Alloy during Isothermal Reheating in Solid-Liquid Region

Abstract:

The effects of reheating in solid-liquid region on the microstructure of electromagnetically stirred Al alloy have been investigated. The billet of Al alloy was produced at a various casting speed from 200 to 500 mm/min in a continuous casting machine with an electromagnetic stirring device. The microstructure of the billet, which was isothermally reheated in a solid-liquid region during holding for from 0.5 to 15 min, was examined. The roundness and size of primary α phase of electromagnetic stirred Al alloy was measured according to the reheating time. The roundness of primary α phase was obtained a minimum during holding for from 3 to 7 min at a holding temperature of 584°C and was deteriorated at a longer reheating time due to a dominant coalescence. Also the spheroidization of primary α phase during reheating in solid-liquid region was significantly dependent on initial microstructure of the billet.

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Materials Science Forum (Volumes 486-487)

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338-341

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.486-487.338

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Online since:

June 2005

Authors:

Dock Young Lee, Ki Bae Kim, Do Hyang Kim

Keywords:

Aluminium Alloy, Electromagnetic Stirring (EMS), Microstructure, Reheating, Solid-Liquid

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DOI: 10.4028/www.scientific.net/msf.449-452.321

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