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Micrograph 731 and full record
- Micrograph no
- 731
- Brief description
- Metal matrix composite of magnesium and alumina fibres
- Keywords
- alumina
, magnesia, metal matrix composite - Categories
- Composite, Metal matrix composite, Metal or alloy
- System
- Mg-Zn
- Composition
- Mg 94.05, Zn 5.62, Zr 0.19, Ce 0.10, Nd 0.03 (wt%) (RZ5 Alloy), reinforced with Alumina fibres with a volume fraction of 14%
- Standard codes
- Reaction
- Processing
- Cast using the pressureless infiltration technique.
- Applications
- Developmental work aimed at reducing the undesirable thermal properties of RZ5 magnesium alloy for hi-tech gearbox castings for formula one.
- Sample preparation
- Standard polishing techniques
- Technique
- Scanning electron microscopy (SEM) in backscattered electron imaging (BEI) mode
- Length bar
- 10 μm
- Further information
- The presence of the alumina fibres acts to inhibit the thermal expansion of the magnesium at temperatures up to 300°C. This is necessary in design situations where tolerances are critical.
- Contributor
- R J Mitchell
- Organisation
- Department of Engineering, University of Leicester
- Date
- 05/03/03
- Licence for re-use
Attribution-NonCommercial-ShareAlike 4.0 International- Related micrographs
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