Thixoforming of an automotive part in A390 hypereutectic Al-Si alloy

P. Kapranos, D.H. Kirkwood, H.V. Atkinson, J.T. Rheinländer, J.J. Bentzen, P.T. Toft, C.P. Debel, G. Laslaz, L. Maenner, S. Blais, J.M. Rodriguez-Ibabe, L. Lasa, P. Riordano, G. Chiarmetta, A. Giese

    Research output: Contribution to journalConference articleResearchpeer-review


    Hypereutectic aluminium–silicon alloys offer the possibility of an in situ natural composite (the silicon acting as the reinforcing phase) with properties that make them attractive for a number of automotive applications. However, conventional casting techniques result in excessive growth of the silicon particles in the melt, which adversely affect the mechanical properties. Thixoforming allows hypereutectic Al–Si alloys containing 40–50% fraction liquid to be shaped into complex near net shape components, whilst keeping the silicon particle size quite fine. This paper describes the development of a series of hypereutectic alloys based on the A390 composition (17%Si, 5%Cu, 0.5%Mg), their thixoforming, their resulting microstructures and mechanical properties. Finally the thixoforming of an automotive component using an A390 alloy is also described.
    Original languageEnglish
    JournalJournal of Materials Processing Technology
    Issue number2-3
    Pages (from-to)271-277
    Publication statusPublished - 2003
    EventInternational Conference on Research and Development in Net-Shape Manufacturing - University of Birmingham, Birmingham, United Kingdom
    Duration: 9 Apr 200111 Apr 2001


    ConferenceInternational Conference on Research and Development in Net-Shape Manufacturing
    LocationUniversity of Birmingham
    Country/TerritoryUnited Kingdom


    • Thixoforming
    • Hypereutectic
    • Mechanical properties
    • Automotive applications


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