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

DoITPoMS Micrograph Library Full Record for Micrograph 661
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Full Record for Micrograph 661

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Micrograph no
661
Brief description
Al-4 wt% Cu, over aged alloy
Keywords
aged Link to MATTER Glossary entry for aged, alloy Link to MATTER Glossary entry for alloy, aluminium Link to MATTER Glossary entry for aluminium, copper, hardening Link to MATTER Glossary entry for hardening, heat treatment Link to MATTER Glossary entry for heat treatment, metal, quenching Link to MATTER Glossary entry for quenching, vacancy
Categories
Metal or alloy
System
Al-Cu   Link to phase diagram
Composition
Al 96, Cu 4 (wt%)
Standard codes
Reaction
Processing
Over aged
Applications
Sample preparation
Technique
Reflected light microscopy
Length bar
50 μm
Further information
Prolonged heat treatment above 150ºdegC to 200ºdegC has led to the evolution of the stable CuAl2 phase (q). The CuAl2 phase is visible at high magnifications. It does not contribute to the strength of the alloy and the over aged aluminium has poor mechanical properties.
Contributor
Dr J Marrow
Organisation
Department of Materials Science, University of Manchester and UMIST
Date
07/11/02
Licence for re-use
Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales
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