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

DoITPoMS Micrograph Library Full Record for Micrograph 35
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Full Record for Micrograph 35

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Micrograph no
35
Brief description
Cu 70, Zn 30 (wt%), faster recrystallisation - finer grain size
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, zinc
Categories
Metal or alloy
System
Cu-Zn   Link to phase diagram
Composition
Cu 70, Zn 30 (wt%)
Standard codes
Reaction
Processing
Annealed, cold rolled 70% and annealed again for 30 minutes at 800 °C
Applications
Sample preparation
Technique
Reflected light microscopy
Length bar
80 μm
Further information
This sample was annealed and 70% cold rolled, with subsequent annealing for 30 minutes at 800 °C. This high deformation leads to higher defect density and therefore more recrystallisation. This gives a finer ultimate grain size as the nucleation rate for recrystallisation increases with the extent of deformation.
Contributor
Prof T W Clyne
Organisation
Department of Materials Science and Metallurgy, University of Cambridge
Date
25/10/01
Licence for re-use
Attribution-NonCommercial-ShareAlike 4.0 International