| Numéro |
J. Phys. Colloques
Volume 42, Numéro C5, Octobre 1981
ICIFUAS-7Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids |
|
|---|---|---|
| Page(s) | C5-43 - C5-48 | |
| DOI | https://doi.org/10.1051/jphyscol:1981505 | |
ICIFUAS-7
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-43-C5-48
DOI: 10.1051/jphyscol:1981505
1 Groupe d'Etudes de Métallurgie Physique et Physique des Matériaux, E.R.A. 463 I.N.S.A. Bât. 502, 69621 Villeurbanne Cedex, France
2 C.E.N. Grenoble, D.R.F., 85X, 38041 Grenoble Cedex, France
Seventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. Colloques 42 (1981) C5-43-C5-48
DOI: 10.1051/jphyscol:1981505
MICROPLASTICITY AND INTERNAL FRICTION IN PURE IRON
J. San Juan1, L. No1, G. Fantozzi1, C. Esnouf1 et F. Vanoni21 Groupe d'Etudes de Métallurgie Physique et Physique des Matériaux, E.R.A. 463 I.N.S.A. Bât. 502, 69621 Villeurbanne Cedex, France
2 C.E.N. Grenoble, D.R.F., 85X, 38041 Grenoble Cedex, France
Abstract
We have studied the microdeformation behaviour of pure iron at low temperature (4K - 250K). Two thermally activated microdeformation stages are observed : one is associated to the α process observed by internal friction, the other is linked to the βα peak. Activation parameters determined for the α component are in good agreement with double-kink formation on non screw dislocations. βα component is due to dislocation depinning from an extended atmosphere.