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Twinning and Interfacial Planes in Copper

Published online by Cambridge University Press:  31 January 2003

Valerie Randle ,
Mark Caul  and
Jörn Fiedler
Valerie Randle
Affiliation:
Department of Materials Engineering, University of Wales Swansea, Swansea SA2 8PP, United Kingdom
Mark Caul
Affiliation:
Department of Materials Engineering, University of Wales Swansea, Swansea SA2 8PP, United Kingdom
Jörn Fiedler
Affiliation:
Universität `Otto von Guericke' Magdeburg, Institute für Werkstofftechnik und Werkstoffprüfung, Grosse Steinernetischstrasse, Magdeburg 39106, Germany
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Abstract

Abstract: This work reports the distribution of a large, representative sample population of grain boundary plane crystallography in pure, annealed copper by use of an improved experimental procedure. The new methodology reduces the laboriousness and improves the accuracy of data collection, and so is described in detail. Analysis of the results concentrates on the Σ3 boundaries, and shows that three-quarters of these were tilt boundaries on the 011 zone. Of these tilt boundaries, nearly half were coherent twins, i.e., on 111/111 planes, or near coherent twins on 23,17,17/775 planes. The high population of the second group is thought to be due to oxygen take-up during annealing. The data in general showed a trend for lower energy Σ3s to occur more frequently. The results were interpreted in terms of boundary energies, local equilibration, and comparisons with previous work in copper and other systems.

Type
Research Article
Information
Microscopy and Microanalysis , Volume 3 , Issue 3 , May 1997 , pp. 224 - 233
Copyright
2001 Cambridge University Press

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