Processing and Application of Ceramics 2013 Volume 7, Issue 2, Pages: 63-68
https://doi.org/10.2298/PAC1302063S
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ECAP - new consolidation method for production of aluminium matrix composites with ceramic reinforcement
Šnajdar-Musa Mateja (University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Department for Materials, Zagreb, Croatia)
Schauperl Zdravko (University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Department for Materials, Zagreb, Croatia)
Aluminium based metal matrix composites are rapidly developing group of
materials due to their unique combination of properties that include low
weight, elevated strength, improved wear and corrosion resistance and
relatively good ductility. This combination of properties is a result of
mixing two groups of materials with rather different properties with
aluminium as ductile matrix and different oxides and carbides added as
reinforcement. Al2O3, SiC and ZrO2 are the most popular choices of
reinforcement material. One of the most common methods for producing this
type of metal matrix composites is powder metallurgy since it has many
variations and also is relatively low-cost method. Many different techniques
of compacting aluminium and ceramic powders have been previously
investigated. Among those techniques equal channel angular pressing (ECAP)
stands out due to its beneficial influence on the main problem that arises
during powder compaction and that is a non-uniform distribution of
reinforcement particles. This paper gives an overview on ECAP method
principles, advantages and produced powder composite properties.
Keywords: powders, extrusion, pressing, aluminium/ceramic composites