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

DoITPoMS Micrograph Library Full Record for Micrograph 42
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Full Record for Micrograph 42

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Micrograph no
42
Brief description
Zn, cold rolled - mechanical twins
Keywords
alloy Link to MATTER Glossary entry for alloy, mechanical twins Link to MATTER Glossary entry for mechanical twins, metal, twinning Link to MATTER Glossary entry for twinning, zinc
Categories
Metal or alloy
System
Zn
Composition
Not specified
Standard codes
Reaction
Processing
Cold rolled
Applications
Sample preparation
Technique
Reflected light microscopy
Length bar
80 μm
Further information
This sample was cold rolled. Zinc has a hexagonal structure so it contains only two independent slip systems. However, for slip to occur, five slip systems are required so zinc does not undergo general plasticity. Instead it forms mechanical twins as an alternative to dislocation motion to accommodate the 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
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