In this study, a new wire + powder synchronous arc additive manufacturing technique was used to manufacture Ti–Cu alloys. The microstructure and properties of the as-fabricated alloys were studied. The results showed that the prepared Ti–Cu alloys have good properties. The Cu with high growth restriction factor can increase the constitutional supercooling zone in the Ti–Cu alloys, which can override the negative effect of a high thermal gradient in the manufacturing process. Through the observation of the microstructure, the as-printed Ti–Cu alloy specimens have equiaxed fine-grained microstructure. Through corrosion performance analysis, the Cu can also make the passivation film of the alloy more compact and make the alloy more corrosion resistant.
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