M. Saxlova et J. Kratochvil, A THEORY OF DIPOLAR DISLOCATION WALL STRUCTURES, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 188(1-2), 1994, pp. 69-79
The goal of the paper is to answer three questions: (1) to investigate
the way in which the dipolar dislocation walls are formed, (2) to exp
lain their tendency to regular arrangement and (3) to determine their
geometry. The answers are based on the linear stability analysis of th
e proposed model of sweeping and dragging mechanisms of dislocation di
pole clustering. From the set of wall orientations provided by the ana
lysis the most stable dipolar dislocation structure actually formed is
selected by an energetically motivated geometrical criterion. The mod
el is employed for prediction of geometry of the dipolar wall structur
es produced by collinear slip belonging to one or two slip planes, cop
lanar or non-coplanar symmetric double slip, and symmetric multislip.
In all cases the predicted wall geometry is consistent with the availa
ble observations.