Micrograph 21 and full record
- Micrograph no
- 21
- Brief description
- Fe, C 1.0 (wt%), hypereutectoid alloy
- Keywords
- alloy , carbon, cementite , hypereutectoid , iron, metal, steel , Widmanstätten
- Categories
- Metal or alloy
- System
- Fe-C-X
- Composition
- Fe, C 1.0 (wt%)
- Standard codes
- Reaction
- Processing
- Normalised
- Applications
- Sample preparation
- Etched in 3% nital
- Technique
- Reflected light microscopy
- Length bar
- 400 μm
- Further information
- This is a hypereutectoid alloy and illustrates the effect of a fast cooling rate on the resultant microstructure. The first phase to form from the austenite is proeutectoid cementite. With faster cooling there is less time for carbon to diffuse and the microstructure is more refined and may form the initial cementite as Widmanstätten side plates.
- 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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