Sciences & Technologie
Volume 41, Numéro 1, Pages 93-98
2015-06-30

Dislocations Mobility Under The Image Force Effect In Bicrystals Of Cfc Materials: Cu-x, X = Pb, Al, Au, Ag And Ni



Authors : Ouchtati A. . Khalfallah O. .

Abstract

The image force undergone by a matrix dislocations close and parallel to an interphase boundary is studied in Cu-X bicrystals (with X = Pb, Al, Au, Ag, Ni) for disorientations ranging between 0° and 90°. Dislocations have a Burgers vector = a/2 [110]. The elastic energy of dislocation-boundary interaction is calculated within the framework of anisotropic linear elasticity. The elastic energy is related to the difference of the two metals shear moduli. It is about a few hundred pico Joule per meter. The image force can be repulsive or attractive according to the sign and the intensity of shear moduli difference. The isoenergy maps have various symmetries according to the disorientation.

Keywords

Interphase Boundary; Dislocation; Elastic Interaction; Image Force; Anisotropic Elasticity; FCC Structure

Les articles similaires

Dislocations Mobility Under The Image Force Effect In Bicrystals Of Cfc Materials: Cu-x, X = Pb, Al, Au, Ag And Ni

Ouchtati A .  Khalfallah O . 
pages 19-23.

Dislocations Mobility Under The Image Force Effect In Bicrystals Of Cfc Materials: Cu-x, X = Pb, Al, Au, Ag And Ni

Ouchtati A .  Khalfallah O . 
pages 93-98.

The Effect Of Intermittent Training (short - Short) On Explosive Force For Lower Extremities Football Players Under 20 Years Old.

عمر عتيق .  عبد الله منصوري . 
ص 20-26.

Searching For Cfc’s And Hcfc’s Alternatives. Part I: A Refrigerant Design Strategy Using Group Contribution Methods

Khetib Y .  Meniai A.h .  Lallemand A . 
pages 97-102.

L’effet De La Pandémie (covid 19) Sur Quelques Types De Forces (force Maximale –force Explosive) Chez Les Basketteurs De Haut Niveau (cas De Groupement Sportif Des Pétroliers Seniors Garçons)

Ouddane Amina .  Saidi Zerrouki Youssouf .  Krideche Mohamed Lamine . 
pages 725-743.

Formats de citation