In order to determine whether dislocations in crystals of this carbide were dissociated, monocrystals with C/Ti atomic ratios of between 0.59 and 0.95 were deformed and the resultant dislocations were observed by using weak-beam and high-resolution transmission electron microscopy. It was found that the dislocations dissociated into partials and that the dissociation width increased, upon decreasing the C/Ti ratio, from 1.75nm for TiC0.95 to 4.2nm for TiC0.59. This corresponded to a variation in stacking fault energy from 130 to 300mJ/m2. The effects of image force and imaging conditions, in weak-beam observations, upon the observed dissociated width were considered with regard to the making of precise estimates of the stacking fault energy.

Dislocation Dissociation in Titanium Carbide Crystal. S.Tsurekawa, H.Yoshinaga: Journal of the Japan Institute of Metals, 1994, 58[4], 390-6