Commercial brass, ~30% Zn, displaying dendritic solidification

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Description:	An good example of dendritic solidification, which occurs when the solidification front becomes unstable with respect to small perturbations. This results in the growth of the perturbations, producing dendrites (from the Greek for tree). The variation in colour across the micrograph indicates that the cooling was sufficiently rapid to prevent solid state diffusion and hence a concentration variation. This phenomenon is known as coring.
Keywords:	alloy • brass • copper • dendrite • metal • zinc
Categories:	Science approaches > Microstructure Materials > Metals & alloys > Copper & alloys Materials > Metals & alloys > Other metals & alloys > Zinc & alloys Testing, analysis & experimentation > Metallography Scale > Micro
Created by:	DoITPoMS, University of Cambridge Dr R F Cochrane, Department of Materials, University of Leeds
Published by:	DoITPoMS, University of Cambridge
License:	This resource is released under the Creative Commons Attribution Non-Commercial Share Alike license (2.0 UK: England & Wales). You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). noncommercial – You may not use this work for commercial purposes. share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one. View the full legal code here.
Date created:	04 September 2002
Date added:	21 August 2009
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Resource ID:	1459
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