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Verhandlungen pp 556-559 | Cite as

A transmission electron microscope study of thin foils of copper

  • E. Votava
  • A. Fourdeux

Abstract

The differences in the mechanical properties of different f. c. c. metals have been explained by Seeger (1) by the differences in the stacking-fault energy of these metals. Copper has a low stacking-fault energy and therefore the partial dislocations will be widely separated. As a consequence the mechanical properties depend on the properties of the partials and, because the climbing of partials is difficult, it has been suggested (1) that polygonisation of copper is not possible. The present investigation has therefore been undertaken to study this problem experimentally and to obtain a better understanding of the recovery process of a f. c. c. metal with low stacking-fault energy.

Fig. 1.

The arrangement of dislocation in an annealed Cu (a) foil (2 h at 800° C). A diffuse polygonisation has been formed. The arrow markes a circular closed dislocation line

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References

  1. 1.
    Seeger, A.: Conf. Rep. on Defects in Crystalline Solids, London 1954.Google Scholar
  2. 2.
    Hirsch, P. B., R. W. Horne and M. J. Whelan: Lake Placid Conference 1956.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1960

Authors and Affiliations

  • E. Votava
    • 1
  • A. Fourdeux
    • 1
  1. 1.European Research Associatess. a. BrusselsBelgium

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