|
A
pure tilt boundary causes a constant angle of tilt between lattice planes
of the same type in adjacent regions of the sample. It is composed of a
regular array of edge dislocations of the same sign in the plane of the
boundary. If the Burgers vector of the dislocations is, b, and their spacing
is, D, then the angle of tilt is given by q
= b/D.
The
photograph shows dislocation etch pits in a tilt boundary in a germanium
crystal, the diagram indicates how the pure tilt arrises from this regular
array.
From:
Hull, "Introduction to Dislocations," Pergamon (1965) |
|
 |
|
