Image icon  Cu 90, Sn 10 (wt%) bronze, cast annealed

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Description: Subsequent to casting this sample was subject to an annealing treatment which served to recrystallise the sample. Evidence of this can be found in the annealing twins visible in several of the grains. These are a consequence of growth accidents during recrystallisation. Their shape is determined by the need to minimise interfacial energy. There is no strain energy associated with such twins and hence they do not have pointed ends.
Keywords: alloy • annealing • bronze • copper • metal • tin
Categories: Science approaches > Structure, bonding & defects > Twins
Science approaches > Microstructure
Science approaches > Strengthening mechanisms > Recovery, recrystallisation & grain growth
Materials > Metals & alloys > Copper & alloys
Processes > Thermal treatments > Annealing
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).
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Date created: 04 September 2002
Date added: 21 August 2009
Resource ID: 1536