Abstract Scope |
Achieving widespread industrial adoption of additively manufactured (AM) components necessitates creating fully dense, repeatable, and high-quality materials tailored for AM techniques like directed energy deposition (DED). To achieve this goal, the quality of a part is encompassed by defining a materials printability, traditionally accounting for defects including lack of fusion, keyhole porosity, and balling. For harder to print materials such as Ni-based superalloys, where the primary materials failure occurs due to solidification cracking, the current definition is insufficient. Within this study, high-throughput experimentation is used to define the compositional printability of Ni-based superalloys including Inconel® 718 and Inconel® 738 with their relationship to crack susceptibility. Single track, multi-track, and multilayer builds quantify the effect of solid solution strengthening, gamma prime, and carbide forming elements on the solidification cracking susceptibility. This work provides a new perspective on printability in AM, empowering researchers to create novel, materials tailored for AM processes. |