Micrograph 47 and full record
- Micrograph no
- 47
- Brief description
- Al 95, Cu 5 (wt%), microsegregation - cored dendrites
- Keywords
- alloy , aluminium , copper, coring , dendrite , metal, microsegregation
- Categories
- Metal or alloy
- System
- Al-Cu
- Composition
- Al 95, Cu 5 (wt%)
- Standard codes
- Reaction
- Processing
- As-cast (metal mould)
- Applications
- Sample preparation
- Technique
- Reflected light microscopy
- Length bar
- 400 μm
- Further information
- This sample shows kappa-Al dendrites surrounded by a fine eutectic in which the two phases, kappa and θ (Al
Cu) cannot be resolved optically. The θ phase is non-equilibrium and is present due to microsegregation during solidification. This occurs at the beginning of solidification when the solid is low in solute creating 'cored' dendrites and leaving a solute-enriched liquid. - 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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