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Licensed Unlicensed Requires Authentication Published by De Gruyter December 27, 2021

Dislocation glide on non-compact crystal planes in copper

  • Alena Orlová EMAIL logo

Abstract

In copper, a dislocation glide on non-compact slip planes {100}, {110}, and also {11X}, X = 2, 3, . . . can locally appear in the deformation process at high temperatures. The present work gives a summary of recent investigations of microstructures formed at temperatures of 773– 973 K in the case of compressive and tensile creep and in single shear deformation realized on double-notch specimens, first of all the detection of traces of this process in the slip pattern and dislocation structure. A discussion leads to the conclusion that favorable conditions for the non-compact glide are given by a double (multiple) slip on symmetrically oriented <110> {111} slip systems, operating on different planes, and a stress concentration. The last condition can be justified, e. g., by the inhomogeneous bi-axial stress field.


Dr. A. Orlová Institute of Physics of Materials Žižkova 22, 61662 Brno, Czech Republic Tel: +420 5 41 636 413 Fax: +420 5 4121 8657

  1. The author thanks her colleagues from the IPM AS CR for their kind help in a solution of the project No. A 204 1504, granted by the Grant Agency of the AS CR. Further financial support of this Grant Agency to the present treatment of the results under the grant No. S 204 1001 is greatly appreciated.

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Received: 2001-10-09
Published Online: 2021-12-27

© 2002 Carl Hanser Verlag, München

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