Full Record for Micrograph 606

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Micrograph no: 606
Brief description: Extruded Saffil-containing metal matrix composite
Keywords: alignment, composite material , extrusion , MMC, particle, reinforcement , Saffil
Categories: Composite
System: Al
Composition: Commercial purity (99.5%)
Standard codes
Reaction: N/A
Processing: Commercial purity (99.5%) aluminium has been atomised, thoroughly mixed with alumina reinforcement fibres and then extruded.
Applications: Metal matrix composites (MMCs) offer high specific stiffness which can be retained to high temperatures. This makes them suitable for applications in the aerospace industry. They also offer controlled (or zero) thermal expansion coefficients, good wear resistance and good impact properties.
Sample preparation: The sample has been oxidised to provide colour contrast for different grain orientations.
Technique: Reflected light microscopy, polarised
Length bar: 40 μm
Further information: Commercial purity aluminium has atomised, mixed with short, 3 micron 'Saffil' alumina fibres, ball milled, tumbled, cold compacted (20MPa) and then extruded. The fibres are well distributed and generally lie parallel to the extrusion direction (horizontal).
Contributor: Prof T W Clyne
Organisation: Department of Materials Science and Metallurgy, University of Cambridge
Date: 03/10/02
Licence for re-use: Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales