Unraveling the interfacial structure of TA2 titanium-A36 steel composite plate and its corrosion behavior in marine environment

In this study, the microstructure and corrosion behavior of the interface of a titanium-steel composite plate were analyzed and compared with that of cladding material and steel substrate. The results showed that the interface exhibited a complex laminar structure. The mass losses after the salt spray test indicated an accelerated corrosion effect at the composite interface, and the effect diminished with the extension of corrosion time. A significant accelerated corrosion crack was observed at the interface after the corrosion test. Furthermore, the multiple corrosion mechanism was elaborated in combination with electrochemical activity test in different regions of the composite interface.