The core structure of 1/3⟨<ovl>11</ovl>23⟩ {11<ovl>2</ovl>2} edge dislocations in h.c.p. metals

Abstract

Abstract A computer simulation has been carried out for the core structure of a 1/3⟨1123⟩ {1122) edge dislocation using the truncated Lennard-Jones (12–6) potential. The core is composed of two distinct structural units which can be interpreted in terms of {1121) and {1122) twins. This core structure differs markedly from that proposed by Rosenbaum (1964).