Microstructure and properties of T joint by EBW-brazing hybrid welding

TA15 titanium alloy T joint obtained by EBW (electron beam welding)-brazing hybrid welding was investigated. The microstructure, element distribution and interfacial reaction were studied by means of scanning electron microscope, energy dispersive spectvoscope and X-ray diffraction.The bending properties of the joints both by hybrid electron beam welding with brazing and by electron beam welding were tested.The results showed that TA15 titanium alloy T joint was acquired by EBW-brazing hybrid welding with proper parameter.Element diffusion and interfacial reaction exist in the interface of electron beam welding and brazing.The plastic properties of the joint acquired by hybrid electron beam welding with brazing preceded the one only by electron beam welding.But the maximum intensity of pressure endured by the former is slightly lower than the later.