LX. A mechanism for the growth of deformation twins in crystals

This is the authors' abstract. We don't add key points for this paper.

Summary The principal difficulty in developing a dislocation theory of mechanical twinning has been to explain how a twin grows through a finite thickness of crystal. By extending the recent theory of slip bands, proposed by Frank and Read, it is possible to show that a dislocation can move steadily from plane to plane in a crystal. A theory of mechanical twinning, which is formally analogous to Frank's theory of crystal growth, can then be developed. The theory is applied to the body- centred and face-centred cubic lattices.