Laser additive manufacturing method for titanium alloy/stainless steel dissimilar metal component

The invention provides a laser additive manufacturing method for a titanium alloy/stainless steel dissimilar metal component. The laser additive manufacturing method for the titanium alloy/stainless steel dissimilar metal component comprises the following steps of performing three-dimensional modeling on the dissimilar metal component to be processed, performing slicing and layering treatment on a model, and importing slicing data; firstly, evenly laying stainless steel powder on the surface of common alloy steel layer by layer, conducting laser additive manufacturing, and forming a stainless steel single-metal component; then evenly laying a layer of titanium alloy powder with the thickness of 0.1 to 1 mm, and under protection of inert gas, conducting rapid selective laser melting machining at the power of 1000 to 1800 W and the scanning speed of 200 to 600 mm/s so as to obtain a titanium alloy/stainless steel bonding layer; and then laying titanium alloy powder layer by layer, and under protection of inert