Alpha-beta interfaces play an important role in the mechanical properties of alpha/beta alloys. These interfaces are the sites of hydrogen segregation and hydride precipitation. In addition there have been a number of investigations which have reported the presence of what has been designated interface phase, and the role of the interface phase on transmitting deformation across the interface has been considered in two separate investigations. Numerous observations have been made that voids formed at alpha/beta interfaces. Fatigue cracks have been observed to form and propagate along alpha/beta interfaces. Catastrophic fracture has also been found to occur at these interfaces. All of these observations attest to the importance of alpha/beta interfaces in controlling properties of alpha/beta Ti alloys. Although plastic deformation studies of single crystal alpha-Ti have been carried out and single crystal studies of Beta-Ti have been made, no studies, up to this investigation, have been carried out on alpha/beta bimetallic bicrystals.