Dissemination of IT for the Promotion of Materials Science (DoITPoMS)

DoITPoMS Micrograph Library Full Record for Micrograph 37
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Full Record for Micrograph 37

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Micrograph no
37
Brief description
Cu 70, Zn 30 (wt%), slow cooling - annealing twins
Keywords
alloy Link to MATTER Glossary entry for alloy, annealing Link to MATTER Glossary entry for annealing, brass Link to MATTER Glossary entry for brass, copper, metal, recrystallisation Link to MATTER Glossary entry for recrystallisation, twinning Link to MATTER Glossary entry for twinning, zinc
Categories
Metal or alloy
System
Cu-Zn   Link to phase diagram
Composition
Cu 70, Zn 30 (wt%)
Standard codes
Reaction
Processing
Cold rolled and recrystallised
Applications
Sample preparation
Etched in NH4OH/H202
Technique
Reflected light microscopy
Length bar
400 μm
Further information
This sample was cooled slowly and contains equiaxed a grains that form in order to minimise their surface energy. Within these grains there is evidence of twinning. Annealing twins have formed during recrystallisation.
Contributor
Prof T W Clyne
Organisation
Department of Materials Science and Metallurgy, University of Cambridge
Date
25/10/01
Licence for re-use
Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales