Image icon  Cu-10.5 wt% P

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Description: This is an example of a hypereutectic alloy. On slow cooling the liquid first solidified as copper phosphide dendrites at approximately 850°C. The remaining liquid solidified as a eutectic at 714°C. The copper phosphide is brittle and has cracked due to shrinkage stresses. Note that because of its narrow composition range, there is no coring in the dendrites. This sample also contains some porosity.
Keywords: alloy • bronze • copper • copper phosphide • dendrite • hypoeutectic • metal • phosphorus • porosity
Categories: Science approaches > Microstructure
Materials > Metals & alloys > Copper & alloys
Testing, analysis & experimentation > Metallography
Scale > Micro
Created by: Dr J Marrow, Department of Materials Science, University of Manchester and UMIST
DoITPoMS, University of Cambridge
Published by: DoITPoMS, University of Cambridge
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Date created: 07 November 2002
Date added: 21 August 2009
Resource ID: 1733