MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Continuous Semi-Solid Casting Process for Aluminum Alloy Billets
Hakaru NakatoMichio OkaSeiji ItoyamaMasao UrataTatsuo KawasakiKo-ichi HashiguchiShinobu Okano
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2002 Volume 43 Issue 1 Pages 24-29

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Abstract

A new process for continuous semi-solid casting of billets of aluminum alloys was developed. Round aluminum alloy billets 75 mm and 150 mm in diameter are continuously cast in a semi-solid state by agitating the alloy in the agitating vessel with a mechanical screw and/or an electromagnetic stirrer. The solidification structure of the billets obtained by this process is a mixed structure of granular particles and a fine eutectic structure, except in a thin chill layer about 2 mm in thickness, which shows a dendrite structure. It was possible to use billets of AC4C alloy obtained by this process in the thixoforming process without surface conditioning.

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© 2002 The Japan Institute of Metals and Materials
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