| Numéro |
J. Phys. Colloques
Volume 49, Numéro C5, Octobre 1988
Interface Science and Engineering '87An International Conference on the Structure and Properties of Internal Interfaces |
|
|---|---|---|
| Page(s) | C5-587 - C5-592 | |
| DOI | https://doi.org/10.1051/jphyscol:1988573 | |
An International Conference on the Structure and Properties of Internal Interfaces
J. Phys. Colloques 49 (1988) C5-587-C5-592
DOI: 10.1051/jphyscol:1988573
MIGRATION OF DIFFERENTLY ORIENTED GRAIN BOUNDARIES MEASURED ON Fe-3wt%Si 37° <001> BICRYSTALS
P. LEJCEK1, V. PAIDAR1 et M.W. GRABSKI21 Institute of Physics, Czechoslovak Academy of Sciences, NA Slovance 2, 180 40 Praha 8, Czechoslovakia
2 Institute of Materials Science and Engineering, Warsaw University of Technology, Narbutta 85, PL-02-524 Warsaw, Poland
Résumé
Nous avons étudié l'effet de l'orientation de la normale au joint de flexion (37° <001>) sur la migration des joints de grains les bicristaux Fe-3%Si en poids. La vitesse de migration est proportionnelle à la force motrice si la températures et les forces motrices imposées sont suffisamment élevées. L'énergie d'activation de la migration des joints symétriques est égale 3.7 eV/at, tandis que pour les joints asymétriques elle est 1 eV/at seulement.
Abstract
The dependence of the grain boundary migration on the orientation of the boundary surface was investigated on Fe-3wt%Si bicrystals with 37° <001> tilt grain boundary. It was found that the migration velocity is proportional to the driving force at sufficiently high temperatures and for large values of the imposed driving force. The emigration activation energy is 3.7 eV/at for symmetrical boundary while it is only about 1eV/at for asymmetrical one.