James, William SeanGanguly, SupriyoPardal, Goncalo2023-03-292023-03-292023-03-13James WS, Ganguly S, Pardal G. (2023) A performance comparison of additive manufactured creep-resistant superalloys. Science and Technology of Welding and Joining, Volume 28, Issue 7, 2023, pp. 525-5331362-1718https://doi.org/10.1080/13621718.2023.2187925https://dspace.lib.cranfield.ac.uk/handle/1826/19374Creep-resistant nickel, cobalt based superalloys, selected for a high-speed flight application, deposited using Wire + Arc Additive Manufacturing (WAAM), was reported. Three different alloys, Haynes 188, Inconel 718, and Rene 41, were deposited, and tested for their high-temperature tensile properties, and the results compared with wrought data. The alloys were tested from ambient temperature to 1000°C in their as-deposited condition and after undergoing industry standard age-hardening and solutionising heat-treatments, to down select the best performing alloy under two different processing conditions. The mechanical strength of the alloys fell short of the maximum achievable in wrought condition. Precipitation-strengthened alloys, Inconel 718 and Rene 41 were found to have underperformed the most significantly, whereas solid-solution-strengthened Haynes 188 suffered the least due to WAAM.enAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/additive manufacturingdirect energy depositionmechanical resultssuperalloysfractographymicrostructureArticle