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Full Record for Micrograph 260
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- Micrograph no
- 260
- Brief description
- Eutectoid steel, normalised
- Keywords
- alloy
, carbon, eutectoid reaction , iron, metal, steel - Categories
- Metal or alloy
- System
- Fe-C-X
- Composition
- Fe, C 0.8 (wt%)
- Standard codes
- Reaction
- Processing
- Normalised
- Applications
- Sample preparation
- Nital
- Technique
- Reflected light microscopy
- Length bar
- 400 μm
- Further information
- This steel is of the eutectoid composition. Once the temperature is lowered below the eutectoid temperature the steel becomes simultaneously supersaturated with both ferrite and cementite. A eutectoid transformation results (g to a + Fe3C). The resultant microstructure, known as pearlite, comprises lamellae of cementite (dark) embedded in ferrite (white). The platelets are parallel to each other and do not follow a specific crystallographic direction.
- 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