CORE-Materials
Extruded aluminium
DoITPoMS, University of Cambridge
Nucleation of the recrystallized grain structure is very sluggish in this material, but growth rates are rapid, giving rise to a coarse microstructure.
System
Al
Composition
Commercial purity (99.5%)
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
Contributor
Prof T W Clyne
Organisation
Department of Materials Science and Metallurgy, University of Cambridge
Extruded aluminium
DoITPoMS, University of Cambridge
Nucleation of the recrystallized grain structure is very sluggish in this material, but growth rates are rapid, giving rise to a coarse microstructure.
System
Al
Composition
Commercial purity (99.5%)
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
Contributor
Prof T W Clyne
Organisation
Department of Materials Science and Metallurgy, University of Cambridge