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Full Record for Micrograph 604
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- Micrograph no
- 604
- Brief description
- Extruded aluminium
- Keywords
- alloy
, aluminium , annealing , cold swaging, elongation, extrusion , metal, recrystallisation - Categories
- Metal or alloy
- System
- Al
- Composition
- Commercial purity (99.5%)
- Standard codes
- Reaction
- N/A
- Processing
- Commercial purity (99.5%) aluminium has been atomised, cold compacted (20MPa), extruded, cold swaged (strain=0.75) and finally recrystallised for 1h at 600 degrees C
- Applications
- Extrusion is the process of forcing material through a die by means of a ram. It is suitable for forming components of constant section such as rods, tubes and films. Swaging is a subsequent reduction of cross section.
- Sample preparation
- The sample has been oxidised to provide colour contrast for different grain orientations.
- Technique
- Reflected light microscopy, polarised
- Length bar
- 40 μm
- Further information
- Nucleation of the recrystallized grain structure is very sluggish in this material, but growth rates are rapid, giving rise to a coarse microstructure.
- Contributor
- Prof T W Clyne
- Organisation
- Department of Materials Science and Metallurgy, University of Cambridge
- Date
- 03/10/02
- Licence for re-use
Attribution-NonCommercial-ShareAlike 4.0 International- Related micrographs