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Full Record for Micrograph 417
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- Micrograph no
- 417
- Brief description
- Cast iron with magnesium induced spheroidised graphite
- Keywords
- alloy
, carbon, cast iron , iron, metal, spheroidal - Categories
- Metal or alloy
- System
- Fe-C-X
- Composition
- Fe, C 2-4, other constituents (wt% typical) (Cast iron)
- Standard codes
- Reaction
- Processing
- Cast
- Applications
- Sample preparation
- Nital
- Technique
- Reflected light microscopy, polarised with wave-plate
- Length bar
- 800 μm
- Further information
- Cast iron is a brittle material and it is advantageous to process it in such a way to improve its ductility. The brittleness is partially due to the graphite flakes which act as nucleation sites for cracks. Therefore it is an advantage to have the graphite present as spheres. This can be achieved by a heat treatment regime or by the addition of a small amount of Mg which poisons the graphite growth directions.
- Contributor
- Dr R F Cochrane
- Organisation
- Department of Materials, University of Leeds
- Date
- 04/09/02
- Licence for re-use
Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales- Related micrographs
- Micrograph 415: Cast iron with magnesium induced spheroidised graphite (800 μm)
- Micrograph 416: Cast iron with magnesium induced spheroidised graphite (200 μm)
- Micrograph 418: Cast iron with magnesium induced spheroidised graphite (400 μm)
- Micrograph 419: Cast iron with magnesium induced spheroidised graphite (100 μm)