| Numéro |
J. Phys. Colloques
Volume 48, Numéro C8, Décembre 1987
Fifth European Conference on Internal Friction and Ultrasonic Attenuation in Solids
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|---|---|---|
| Page(s) | C8-143 - C8-148 | |
| DOI | https://doi.org/10.1051/jphyscol:1987818 | |
Fifth European Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 48 (1987) C8-143-C8-148
DOI: 10.1051/jphyscol:1987818
1 Institut für Allgemeine Metallkunde und Metallphysik der RWTH, D-5100 Aachen, F.R.G.
2 Department of Mechanical Engineering, University of Western Australia, Perth 6009 Nedlands, Australia
J. Phys. Colloques 48 (1987) C8-143-C8-148
DOI: 10.1051/jphyscol:1987818
THE INTERNAL FRICTION BEHAVIOUR OF A COLD-WORKED Al-Mg-Si ALLOY AT 1 Hz
E. BERTLING-BERRENS1, P.G. McCORMICK2, G. SOKOLOWSKI1 et K. LÜCKE11 Institut für Allgemeine Metallkunde und Metallphysik der RWTH, D-5100 Aachen, F.R.G.
2 Department of Mechanical Engineering, University of Western Australia, Perth 6009 Nedlands, Australia
Abstract
A commercial Al-Mg-Si alloy has been used for the present
investigation. After tensile deformation at about 100 K modulus and decrement
have been measured simultaneously between 100 and 400 K with a torsion
pendulum. The internal friction effects were found to be not very reproducible
from sample to sample. However, continuous dislocation pinning between 90 and
300 K and two pinning stages between 300 and 350 K were observed. The
deformation-induced damping peaks appeared between 115 and 265 K. Their
annealing behaviour has been investigated. All peaks disappeared after
annealing at 400 K.