Nucleation of the ’-phase on dislocations was studied by means of transmission electron microscopy. This demonstrated that ’ preferentially nucleated on dislocations which had a strong edge character, and appeared on the side where the stress field was compressive, without destroying the dislocation core structure. Interfacial energies which were deduced from the nucleation rate data were found to be in good agreement with the predicted interfacial energy versus temperature dependence.

Z.M.Wang, G.J.Shiflet: Metallurgical and Materials Transactions A, 1996, 27[6], 1599-609