Abstract
In this study, using TC4 and ER-316L wires as feedstocks, a double-wire + arc additive manufacturing system was used to fabricate a Ti-stainless steel functionally graded material. The results showed that a crack occurred when the atom fraction of Fe reached 50 at.% in TC4-316L functionally graded material. With an increase of Fe content, microstructure evolved as follows: α-Ti + FeTi → Fe2Ti + FeTi + Cr2Ti → Fe2Ti + Cr2Ti. The maximum microhardness of the component was ~ 945 HV0.2 with Fe content at 60 at.%.
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