DISLOCATIONS MOBILITY UNDER THE IMAGE FORCE EFFECT IN BICRYSTALS OF CFC MATERIALS: CU-X, X = PB, AL, AU, AG AND NI

A OUCHTATI, O KHALFALLAH

Résumé


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.


Mots-clés


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

Texte intégral :

PDF

Références


WEERTMAN, J., (1965), American Journal of Physics, 33, 1091-1093.

LI, J.C.M., (1963), Transactions of the Metallurgical Society of AIME, 227, 239-247.

GANE, N., BOWDEN, F.P., (1968), Journal of Applied Physics, 39, 1432- 1435.

MOODY, N.R., GERBERICH, W.W., BURNHAM, N., (1998), In MRS symposium proceedings of Spring meeting of the Materials Research Society, 522, 427-432.

KRAMER, D.E., YODER, K.B., GERBERICH, W.W., (2001), Philosophical Magazine A, 81, 2033-2058.

HEAD, A.K., (1953), Philosophical Magazine, 44, 92-94.

BARNETT, D.M. and LOTHE, J., (1974), Journal of Physics F: metal physics, 4, 1618-1635.

KHALFALLAH, O., CONDAT, M., PRIESTER, L., KIRCHNER, H.O.K., (1990), Philosophical Magazine A, 61, 291-304.

KHALFALLAH, O., CONDAT, M., PRIESTER, L., (1993), Philosophical Magazine A, 67, 231-250.

PRIESTER, L., KHALFALLAH, O., (1994)1, Philosophical Magazine A, 69, 471-484.

KHALFALLAH, O., PRIESTER, L., (1999), Materials Science Forum, 294-296, 689-692.

PRIESTER, L., (2001), Materials Science and Engineering A, 309-310, 430-439.

KONING, M., KURTZ, R.J., BULATOV, V.V., HOAGLAND, R.G., CAI, W., NOMURA, M., (2003), Journal of Nuclear Materials, 323, 281-289.

DEWALD, M.P., CURTIN, W.A., (2006), Modelling and Simulation in Materials Science and Engineering, 14, 497-514.

DEWALD, M.P., CURTIN, W.A., (2007), Modelling and Simulation in Materials Science and Engineering, 15, S193-S215.

DEWALD, M.P., CURTIN, W.A., (2007), Philosophical Magazine, 87, 4615-4641.

JIN, Z.H., GUMBSCH, P., MA, E., ALBE, K., LU, K., HAHN, H., GLEITER, H., (2006), Acta. Materialia, 54, 1163-1168.

JIN, Z.H., GUMBSCH, P., MA, E., ALBE, K., LU, K., GLEITER, H., HAHN, H., (2008), Acta Materialia, 56, 1126-1135.

LIU, Y.W., JIANG, C.P., CHEUNG, Y.K., (2003), International Journal of Engineering Science, 41, 1883-1898.

LIU, Y.W., FANG, Q.H., JIANG, C.P., (2004), International Journal of Solids and Structures, 41, 3255-3274.

CONDAT, M., KIRCHNER, H.O.K., (1987), Physica Status Solidi (b), 144, 137-143.

KITTEL, C., (1983), Physique de l’état solide, 5 th.,

HIRTH, J. P., LOTHE, J., (1992), Theory of dislocations, reprint edition, Malabar Florida USA, Krieger.


Renvois

  • Il n'y a présentement aucun renvoi.




 

Direction des Publications et de l'animation scientifique

Université des Frères Mentouri Constantine 1. Route Ain El-Bey. 25000. Algérie.