NETL is partnering with ORNL to optimize the additive manufacturing (AM) fabrication process to produce gas turbine components made of high-temperature nickel (Ni)-based Hastelloy X (HX) alloy. The project team will compare results for HX alloy products made using the three main AM techniques: electron beam melting (EBM), laser metal deposition (LMD), and selective laser melting (SLM). Extensive microstructure characterization and mechanical testing will be performed to determine the relationships among the deposition process, microstructure, and mechanical properties. The mechanical properties of actual gas turbine components fabricated by additive manufacturing will be measured and, as a final step, cost analyses of the three AM processes will be conducted to establish the potential gains of using EBM, LMD, or SLM over conventional fabrication routes.