| Numéro |
J. Phys. Colloques
Volume 42, Numéro C5, Octobre 1981
ICIFUAS-7Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids |
|
|---|---|---|
| Page(s) | C5-73 - C5-78 | |
| DOI | https://doi.org/10.1051/jphyscol:1981510 | |
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-73-C5-78
DOI: 10.1051/jphyscol:1981510
Max-Planck Institut für Metallforschung, Institut für Physik, Heisenbergstr.1, D-7000 Stuttgart 80 and Institut für Theoretische und Angewandte Physik der Universität Stuttgart, F.R.G.
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-73-C5-78
DOI: 10.1051/jphyscol:1981510
HYDROGEN-DISLOCATION INTERACTIONS AND INTRINSIC DISLOCATION RELAXATION IN NIOBIUM
M. Maul et H. SchultzMax-Planck Institut für Metallforschung, Institut für Physik, Heisenbergstr.1, D-7000 Stuttgart 80 and Institut für Theoretische und Angewandte Physik der Universität Stuttgart, F.R.G.
Abstract
The dislocation relaxation between 100 K and 200 K (1kHz) in plastically deformed niobium, formerly named "α-relaxation" is a hydrogen Snoek-Köster relaxation (cold work relaxation). This is shown by experiments on extremely degassed samples, which contained controlled amounts of hydrogen and/or oxygen. The intrinsic, hydrogen-free dislocation relaxation appears between 30 K and 70 K (1kHz), the exact peak location depends on the interstitial (O,N) content. This relaxation is probably identical with the "δ peak", observed earlier by Mazzolai and Nuovo.