Effect of elastic fields of dislocations on the equilibrium configurations of self-interstitial atoms in cubic crystals. Part II. FCC copper crystal
The aim of this study is to obtain the energy parameters of the interaction of dislocations of various types with different self-interstitial atom (SIA) configurations in an elastically anisotropic fcc copper crystal. The data from calculations of such interaction make it possible to identify the types of equilibrium SIA configurations that exist in the neighborhood of dislocations and to compare the results with the previously studied case of a bcc iron crystal. The calculations were carried out on the basis of available data on SIA characteristics, obtained with the aid of computer calculations of the parameters of point defects in a fcc copper crystal. The interaction of dislocations with an SIA results in the stabilization of the SIA configurations that are metastable in the absence of elastic fields. The size of the region of stabilization of the <110> dumbbell configuration depends weakly on the type of dislocation and is determined by the distance r = 3b. The distinctive features of the interaction of an SIA with a 60/sup 0/ dislocation enable us to speak of the high mobility of the interstitial atom along the dislocation line. An edge dislocation, interacting with an SIA, causes the SIA to hover as a <110> dumbbell configuration at a distance r = 3b from the line of the dislocation.
- OSTI ID:
- 5288928
- Journal Information:
- Sov. At. Energy (Engl. Transl.); (United States), Journal Name: Sov. At. Energy (Engl. Transl.); (United States) Vol. 61:6; ISSN SATEA
- Country of Publication:
- United States
- Language:
- English
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ATOMS
BURGERS VECTOR
COPPER
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL MODELS
CRYSTAL STRUCTURE
CUBIC LATTICES
DIFFUSION
DISLOCATIONS
EDGE DISLOCATIONS
ELASTICITY
ELEMENTS
FCC LATTICES
INTERSTITIALS
IRRADIATION
LINE DEFECTS
MATERIALS
MATERIALS TESTING
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
METALS
PHYSICAL RADIATION EFFECTS
POINT DEFECTS
RADIATION EFFECTS
REACTOR MATERIALS
SCREW DISLOCATIONS
STABILIZATION
TENSILE PROPERTIES
TESTING
TRANSITION ELEMENTS