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

DoITPoMS Micrograph Library Full Record for Micrograph 456
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Full Record for Micrograph 456

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Micrograph no
456
Brief description
Cu 55, Zn 45 (wt%) brass, as cast, dendritic
Keywords
alloy Link to MATTER Glossary entry for alloy, brass Link to MATTER Glossary entry for brass, copper, metal, Widmanstätten Link to MATTER Glossary entry for Widmanstätten, zinc
Categories
Metal or alloy
System
Cu-Zn   Link to phase diagram
Composition
Cu 55, Zn 45 (wt%)
Standard codes
Reaction
Processing
Cast
Applications
Sample preparation
Ammonium persulphate
Technique
Reflected light microscopy
Length bar
400 μm
Further information
A cast alloy of high zinc brass, consisting of b dendrites. The a precipitates out of solution at the crystal boundaries, forming a structure of b dendrites surrounded by a. This is known as a Widmanstätten structure because a geometrical pattern of a forms on certain crystallographic orientations of the b lattice.
Contributor
Dr R F Cochrane
Organisation
Department of Materials, University of Leeds
Date
04/09/02
Licence for re-use
Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales
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