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Properties of sintered P/M aluminium composites

: Müller, S.; Schubert, T.; Fiedler, F.; Stein, R.; Kieback, B.; Deters, L.

European Powder Metallurgy Association -EPMA-:
Euro PM 2011 Proceedings. Vol 2: Powder manufacturing & processing, powder injection moulding, miniaturization & nanotechnology, PM lightweight & porous materials, non ferrous PM materials, PM biomaterials : Powder Metallurgy Congress & Exhibition; 9th - 12th October 2011, CCIB Congress Centre, Barcelona, Spain
Shrewsbury: EPMA, 2011
ISBN: 978-1-89907-221-7
European Congress and Exhibition on Powder Metallurgy (EURO PM) <2011, Barcelona>
Powder Metallurgy World Congress & Exhibition (PM) <2011, Barcelona>
Conference Paper
Fraunhofer IFAM, Institutsteil Pulvermetallurgie und Verbundwerkstoffe Dresden ()

The Powder Metallurgy (P/M) manufacturing route with pressing, sintering and sizing allows the near net shape fabrication of precision parts made from many different alloy systems. The automotive industry is the most lucrative market for P/M aluminium. However, the low wear resistance, compared to other materials, hampers its application in components (e.g. sprocket) where wear resistance is important. Therefore, in the past different P/M aluminium alloys, especially designed for sintering and reinforced with silicon or hard ceramic particulates (e.g. alumina, zirconium silicate, fly ash) were developed. In this study, the mechanical and tribological behaviour of composites reinforced with sharp edged or spherical ceramic particles was investigated. The wear resistance was evaluated during sliding against hard steel under lubricating conditions at elevated temperatures.