Results 231 to 240 of about 59,310 (292)

Circular edge dislocation loop

European Physical Journal D, 1960
A solution of the stress, deformation and deformation energy is given for an edge dislocation with its dislocation line having the shape of a circle in an unlimited isotropic medium. The possibility of using this solution in studying the dislocation loop in a crystal is discussed.
F Kroupa
exaly   +2 more sources

Dislocation loops in antimony telluride

Physica Status Solidi (a), 1971
The investigation of the diffraction contrast of large hexagonal dislocation loops in Sb2Te3 suggests that nearly all of them are multiple loops. A model which explains satisfactorily the contrast is described. At elevated temperatures the loops do not shrink but take a circular equilibrium shape.
P . Skalicky, E . Wolfgang
openaire   +1 more source

Dislocation Loops in α-Iron

Physica Status Solidi (a), 1978
The equilibrium shapes of dislocation loops in α-iron under the action of a given shear stress are computed, taking into account the effects of elastic anisotropy on the line tension. In fair agreement with these calculations, dislocation loops observed by transmission electron microscopy of cyclically deformed α-iron single crystals are found to be ...
H. O. K. Kirchner   +3 more
openaire   +1 more source

Energy of hexagonal dislocation loops

physica status solidi (b), 1966
AbstractThe elastic strain energy of an elongated hexagonal dislocation loop is calculated from the stress field of dislocation segments using isotropic elasticity theory. Energies of rhombus dislocation loops and rectangular dislocation loops are presented as limiting cases.
G. C. T. Lxu, J. C. M. Li
openaire   +1 more source

Dislocation loops in diamond

Philosophical Magazine, 1962
Abstract Mat triangular plates of diamond have been thinned sufficiently by oxidation at high temperatures for an examination to be carried out by transmission electron microscopy. By suitably tilting the specimens all the diamonds examined have been shown to contain dislocation loops.
T. Evans, C. Phaal
openaire   +1 more source

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