Numéro
J. Phys. Colloques
Volume 44, Numéro C9, Décembre 1983
ECIFUAS-4
Fourth European Conference on Internal Friction and Ultrasonic Attenuation in Solids / Quatrième Conférence Européenne sur le Frottement Intérieur et l'Atténuation Ultrasonore dans les Solides
Page(s) C9-645 - C9-649
DOI https://doi.org/10.1051/jphyscol:1983997
ECIFUAS-4
Fourth European Conference on Internal Friction and Ultrasonic Attenuation in Solids / Quatrième Conférence Européenne sur le Frottement Intérieur et l'Atténuation Ultrasonore dans les Solides

J. Phys. Colloques 44 (1983) C9-645-C9-649

DOI: 10.1051/jphyscol:1983997

THE DISLOCATION-ENHANCED SNOEK PEAK IN Fe-C ALLOYS

L.B. Magalas1, P. Moser2 et I.G. Ritchie3

1  University of Mining and Metallurgy, Institute of Metallurgy, Al. Mickiewicza 30, 30-059 Cracov, Poland
2  Centre d'Etudes Nucléaires de Grenoble, Département de Recherche Fondamentale, Section de Physique du Solide, 85 X, 38041 Grenoble Cedex, France
3  Materials Science Branch, Atomic Energy of Canada, Research Company, Whiteshell Nuclear Research Establishment, Pinawa, Manitoba, ROE 1LO, Canada


Abstract
Some experimental conditions which generate the dislocation-enhanced Snoek peak in Fe-C alloys are presented. The results indicate that the movement of non-screw dislocation segments is involved in the relaxation mechanism. The results are consistent with the movement of non-screw dislocations in a medium with a viscosity proportional to the Snoek relaxation time, or alternatively, to a limiting case of the generation of kinkpairs on non-screw dislocation, i.e. a carbon Snoek-Köster relaxation.