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A Nuclear Magnetic Resonance and Transmission Electron Microscopic Studyof Moving Dislocations in Ternary Al-Base Alloys

Published online by Cambridge University Press:  28 February 2011

J. Th. M. De Hosson  and
O. Kanert
J. Th. M. De Hosson
Affiliation:
Department of Applied Physics, Materials Science Centre, University of Groningen, Nijenborgh 18, 9747 AG Groningen, The, Netherlands
O. Kanert
Affiliation:
Institute of Physics, University of Dortmund, 46 Dortmund 50, FRG.
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Abstract

Pulsed nuclear magnetic resonance proved to be a complementary new technique for the study of moving dislocations in Al-Mg-Zn alloys. The NMR technique, in combination with transmission electron microscopy have been applied to study dislocation motion in A1-0.6 at% Mg-1 at% Zn and Al-1.2 at% Mg-2.5 at% Zn. From the motion induced part of the spin-lattice relaxation rate the mean jump distance of mobile dislocations has been determined as a function of strain. From the NMR data it is concluded that moving dislocations advance over a number of solute atoms in these alloys as described by Mott-Nabarro's model.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 138: Symposium Q – Characterization of the Structure and Chemistry of Defects in Materials , 1988 , 111
Copyright
Copyright © Materials Research Society 1989

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References

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