Micrograph 64 and full record
- Micrograph no
- 64
- Brief description
- Fe, C 3.6, Si 2.1, Mg 0.07 (wt%), spheroidal graphite
- Keywords
- alloy , carbon, graphite , iron, isotropic , magnesium, metal, silicon
- Categories
- Metal or alloy
- System
- Fe-C-X
- Composition
- Fe, C 3.6, Si 2.1, Mg 0.07 (wt%)
- Standard codes
- Reaction
- Processing
- Applications
- Sample preparation
- Technique
- Reflected light microscopy
- Length bar
- 400 μm
- Further information
- The addition of a small amount of Mg (0.07 wt%) significantly improves the mechanical properties of cast iron. The Mg poisons the favoured growth directions of the graphite allowing only isotropic growth and producing more equiaxed graphite. The graphite forms spheroidal graphite (black), which does not act as cracks.
- Contributor
- Prof T W Clyne
- Organisation
- Department of Materials Science and Metallurgy, University of Cambridge
- Date
- 25/10/01
- Licence for re-use
- Attribution-NonCommercial-ShareAlike 4.0 International
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