Micrograph Library
Browse the libraryAdvanced searchSystemsCompositionsTechniquesKeywordsPhase diagramsHelpPreferencesAbout the micrograph libraryTerms of useContribute micrographs!FeedbackLinksCredits Print this page
Full Record for Micrograph 609
[165 KB]
View micrograph
.. in new window
View micrograph and record
.. in new window
You can also view and download the micrographs on Flickr
- Micrograph no
- 609
- Brief description
- The grain structure of extruded aluminium
- Keywords
- alloy
, aluminium , elongation, extrusion , metal - Categories
- Metal or alloy
- System
- Al
- Composition
- Commercial purity (99.5%)
- Standard codes
- Reaction
- N/A
- Processing
- Commercial purity (99.5%) aluminium has been extruded
- 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.
- 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
- The extrusion process leads to the elongation of grains. This micrograph shows a longitudinal section with the extrusion direction lying horizontal. Some large subgrains (or groups of subgrains) are apparent, and some high angle boundary migration has occurred normal to the extrusion direction. Grains near the extrudate centre have a lower aspect ratio.
- Contributor
- Prof T W Clyne
- Organisation
- Department of Materials Science and Metallurgy, University of Cambridge
- Date
- 03/10/02
- Licence for re-use
Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales- Related micrographs