Diffusion bonding of dissimilar metals

Abstract

Diffusion bonding is a solid state metal joining process which is suitable for similar or dissimilar metal joining applications In the present work different dissimilar material combinations with and without interlayer is successfully carried out The joints were analyzed for its metallurgical and mechanical properties The objective of this study is to develop a joining method with large equipment capable of adopting vacuum partial vacuum and inert gas environment for dissimilar metal combinations and to conduct a complete study of the joints in terms of metallurgical and mechanical aspects The DB of AISI 304L stainless steel with low carbon steel grade AISI 1018 steel with AISI 304L stainless steel interlayer direct DB of duplex stainless steel SAE 2205 with medium carbon steel AISI 1035 and Ti 6Al 4V with AISI 304L was performed with the view of replacing cladding and surface coating These experiments were conducted in vacuum environment by varying the process parameters like temperature, pressure and bonding time