The invention provides an
electron beam
welding method for TA15 and Ti60 dissimilar
titanium alloy materials. The
electron beam
welding method for the TA15 and Ti60 dissimilar
titanium alloy materials comprises the following steps: a
butt joint of a workpiece to be welded is fixed, and placed in a vacuum environment; positioned
welding is carried out, wherein the parameters of the positioned welding are as follows: the length of each section of a weld joint is 20-25mm, the working distance is 400mm, the
acceleration voltage is 50-60kV, the focusing current surface focus is +(0.01-0.03)A, the welding beam current is 10-25mA, and the welding speed is 600-800mm / min; formal welding is carried out, wherein the parameters of the formal welding are as follows: the working distance is 400 mm, the
acceleration voltage is 50-60 kV, the focusing current surface focus is (-0.01 to +0.02) A, the
electron beam current is 40-85 mA, and the welding speed is 600-800 mm / min; modified welding is carried out, wherein the parameters of the modified welding are as follows: the working distance is 400mm, the
acceleration voltage is 50-60kV, the focusing current surface focus is +(0.02-0.04) A, the electron beam current is 30-50mA, and the welding speed is 600-800mm / min; and
vacuum cooling and postwelding cleaning are carried out. According to the invention, the weld joint formed by welding is continuous, uniform and good in forming, defects such as air holes and cracks are avoided, and excellent
mechanical property of the weld joint is achieved.