Microstructure evolution in an Al-Si piston alloy under ultrasonic melt processing

Conference proceedings article

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Publication Details

Author list: Chankitmunkong S., Eskin D.G., Limmaneevichitr C.

Publisher: IOP Publishing

Publication year: 2019

Volume number: 529

Issue number: 1

ISSN: 1757-8981

eISSN: 1757-899X

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85067888184&doi=10.1088%2f1757-899X%2f529%2f1%2f012060&partnerID=40&md5=3dc10906a66c534d5831765ee2dafeda

Languages: English-Great Britain (EN-GB)

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Abstract

Piston Al-Si eutectic alloys are used to produce direct-chill cast billets for subsequent forging. Because of a very complex composition and multi-phase heterogeneous structure, it is necessary to control the formation of primary and eutectic compounds either through alloying or casting conditions (or both). In this study we used ultrasonic melt processing above or across the liquidus line to affect the occurrence and size distribution of primary Si as well as morphology of primary Al dendrites and high-temperature eutectic phases. The refinement of these particles has potential benefit for mechanical properties and formability during forging. ฉ Published under licence by IOP Publishing Ltd.

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