Issue
J. Phys. Colloques
Volume 42, Number C5, Octobre 1981
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
Page(s) C5-445 - C5-450
DOI https://doi.org/10.1051/jphyscol:1981566
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids

J. Phys. Colloques 42 (1981) C5-445-C5-450

DOI: 10.1051/jphyscol:1981566

MEDIUM TEMPERATURE INTERNAL FRICTION IN HIGH PURITY f.c.c. AND h.c.p. METALS

C. Esnouf et G. Fantozzi

Groupe d'Etudes de Métallurgie Physique et Physique des Matériaux - E.R.A. 463, Institut National des Sciences Appliquées, Bât. 502, 69621 Villeurbanne Cedex, France


Abstract
We study in high purity polycristalline aluminium and magnesium a strong internal friction peak P1 situated around 0.5 TM (TM = melting point in K). This peak presents a maximum as a function of the oscillating stress amplitude. The results are in agreement with the model of dislocation glide controlled by jog climbing and diffusion of vacancies along dislocations.