Ti 6242 alloy has been diffusion bonded to an AISI 316L stainless steel and a superalloy INCONEL 625. The microstructures of the as-processed products have been analysed and the interdiffusion of the different elements through the interface hasbeen determined by microanalysis. At the combinations 316L-Ti 6242 starting from the 316L side, first aσphase is observed, followed by an Fe{sub}2Ti intermetallic, an FeTi intermetallic, and finally an Fe{sub}2Ti{sub}4O oxide just before the Ti and Ti6242. Because the diffusion of Ti in Fe is faster than the diffusion of Fe in Ti, a Kirkendall effect is produced. At the INCONEL 625-Ti 6242 starting from INCONEL 625, first aσphase (Cr{sub}4Ni{sub}3Mo{sub}2), followed by several phases likeNbNi{sub}3,ηNi{sub}3Ti, Cr(20 pct Mo),βCr{sub}2Ti, NiTi, TiO, TiNi, and Ti{sub}2Ni intermetallics, just before the Ti 6242 have been identified. In this couple the diffusion of Ni in Ti is faster than the diffusion of Ti in the superalloy and then aKirkendall effect was produced. The secuence of formation of the different phases in both couples were in agreement with the respective ternary diagrams. In this paper it is also shown now by using Cu/V interlayer the formation of intermetallics can beavoided.
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