The invention discloses a preparation method and application of a wire special for nano TiC modified 7-series aluminum
alloy electric arc additive, and belongs to the technical field of
metal additive manufacturing, and the preparation method comprises the following steps that S1, an
alloy solution is obtained; s2, a dispersing agent is added to form suspension liquid, the suspension liquid is added into the
alloy solution, and primary ultrasonic treatment and secondary ultrasonic treatment are carried out; s3, the
casting solution is subjected to semi-
continuous casting, and a cast
ingot is obtained; s4, the cast
ingot is subjected to two-section type homogenizing heat treatment, and a homogenized cast
ingot is formed; s5, the homogenized cast ingot is sawn into sections and scalped, the cast ingot is put into an extruding
machine to be subjected to
extrusion machining, an extruded wire is formed, and
extrusion machining comprises first-pass
extrusion and second-pass extrusion; and S6, multiple times of warm drawing and annealing are conducted, then
mechanical milling, ultrasonic cleaning and passivating treatment are conducted, a special wire is formed, and the high-strength and low-defect wire component is prepared through the formed special wire through the dispersing-forming-material increasing three-dimensional synergistic technology.