Image icon  Channelling contrast TEM image of subgrains of extruded aluminium

 
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Description: Fine subgrains can be resolved on the electropolished specimen due to channelling contrast where the intensity of backscattered electrons relates to the crystallographic planes, giving great sensitivity to orientation. The subgrain boundaries coincide with the stringers of fine oxide particles which have formed parallel to the extrusion direction (horizontal).
Keywords: alloy • aluminium • annealing • channelling contrast • elongation • extrusion • metal • stringers • subgrains
Categories: Science approaches > Microstructure
Materials > Metals & alloys > Aluminium & alloys
Processes > Shaping > Deformation > Extrusion
Testing, analysis & experimentation > Metallography
Scale > Micro
Created by: Prof T W Clyne, Department of Materials Science and Metallurgy, University of Cambridge
DoITPoMS, University of Cambridge
Published by: DoITPoMS, University of Cambridge
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Date created: 03 October 2002
Date added: 21 August 2009
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Resource ID: 1641