Micrograph 52 and full record
- Micrograph no
- 52
- Brief description
- Cu 60, Zn 40 (wt%), air cooled - Widmanstätten microstructure
- Keywords
- alloy , brass , copper, metal, Widmanstätten , zinc
- Categories
- Metal or alloy
- System
- Cu-Zn
- Composition
- Cu 60, Zn 40 (wt%)
- Standard codes
- Reaction
- Processing
- Homogenised at 850 °C, air cooled
- Applications
- Sample preparation
- Etched in NH4OH/H2O2
- Technique
- Reflected light microscopy
- Length bar
- 80 μm
- Further information
- This sample has been air cooled. The fast cooling rate changes the morphology to a 'basket weave' appearance known as a Widmanstätten microstructure. The α phase precipitates out of the single β phase during cooling to give α plates in a β matrix. The plates form in order to minimise strain energy.
- 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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