Micrograph 20 and full record
- Micrograph no
- 20
- Brief description
- Fe, C 0.1 (wt%), hypoeutectoid alloy
- Keywords
- alloy , carbon, cementite , ferrite , hypoeutectoid , iron, metal, pearlite , proeutectoid steel , steel
- Categories
- Metal or alloy
- System
- Fe-C-X
- Composition
- Fe, C 0.1 (wt%)
- Standard codes
- Reaction
- Processing
- Normalised
- Applications
- Sample preparation
- Etched in 3% nital
- Technique
- Scanning electron microscopy (SEM)
- Length bar
- 10 μm
- Further information
- This SEM image of a pearlite region in the microstructure shown in micrograph no 19 shows that the ferrite phase in the pearlite has been selectively etched compared to the cementite. The cementite phase appears to protrude from the surface. Within such A pearlite region there are several colonies in different orientations, indicating that the pearlite nucleated on grains of the primary ferrite.
- 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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