INTERFACIAL STRUCTURE OF (10(1)OVER-BAR-1) TWINS AND TWINNING DISLOCATIONS IN TITANIUM

The interfacial structure of {10 ($) over bar 11} twins obtained using atomic-scale computer simulation by Serra, Pond and Bacon in 1991 is shown to be qualitatively consistent with high-resolution transmission electron micrographs of such twins in Ti obtained by Kasukabe, Yamada , Peng and Bursil in 1993. In addition, images of two twinning disloca tions are analysed using a circuit mapping method to determine their B urgers vectors and to demonstrate that they correspond to defects stud ied previously using computer simulation by Serra, Bacon and Pond in 1 988 and by Serra, Pond and Bacon in 1991.