The invention discloses a method for manufacturing a TiAl
intermetallic compound through heterogeneous double-wire TOP-TIG
electric arc additive manufacturing, and belongs to the technical field of additive manufacturing. The method solves the problem that when the TiAl
intermetallic compound is prepared through an existing
electric arc additive manufacturing process, due to the fact that meltingcharacteristic differences of a
titanium alloy welding wire and an aluminum
welding wire are large, melting of the two wires is not synchronous under heating of the same
electric arc, and the obtainedintermetallic compound is not uniform in component structure. According to the method, by regulating the angles and the positions of the
welding wires and the extension length of a
tungsten electrode, it is ensured that the heat absorbed by the two heterogeneous welding wires is different under heating of the same electric arc, the welding wires can be under the reasonable heating conditions correspondingly, synchronous continuous melting of the two welding wires is achieved, and a TiAl
intermetallic compound component uniform in component structure is obtained. By means of the method, the problem that melting of the heterogeneous double wires is not synchronous when the intermetallic compound is manufactured through existing TIG electric arc additive manufacturing is effectively solved,the intermetallic compound manufacture process interval is widened, and stability of the manufacturing process is improved.