The interdiffusion of various elements in Ti/AISI304 couples was investigated, at temperatures ranging from 976 to 1123K, by means of metallography and electron-probe microanalysis. The diffusion zone of the couple was found to be of solid-solution type, and layer growth could be represented by 2 straight lines with a change of slope lying within the neighborhood of the Curie temperature. The layer growth kinetics at 1023 to 1123K could be described by an Arrhenius relationship. It was observed that the minimum activation energy for the interdiffusion of Ti (78.05kJ/mol at 60at%Ti) and Fe (74.05kJ/mol at 20at%Fe), and the activation energy for layer growth (73.96kJ/mol), were in agreement; thus suggesting that the growth kinetics were controlled by the migration of a plane having a composition of: Ti-20Fe-10Ni-10%Cr.

Interdiffusion Studies in Titanium-304 Stainless Steel System. G.B.Kale, R.V.Patil, P.S.Gawade: Journal of Nuclear Materials, 1998, 257[1], 44-50