Aller au menu Aller au contenu
Science et ingénierie des matériaux et des procédés
< >

> SIMAP_Groupes > SIMAP_GPM2

precipitate

DISLOCATIONS BY-PASSING CUBIC UNSHEARABLE PRECIPITATES

precipitate
A Frank Read source sends dislocations through a random set of cubic unshearable precipitates. They are by-passed according to the Orowan's model.
    One can notice loop pile-up around each precipitates crossing the glide plane containing the source. The shape of the Orowan loops is either triangular or hexagonal corresponding to the intersection between a (100) cube and a (111) plane.  
    When many loops are present, passages between precipitates are narrower. Consequently the passage of dislocations is more difficult and the rythm of the source is slowed down.
3D4
Back to the DDD main page

mise à jour le 23 mars 2009

Univ. Grenoble Alpes