Tensile properties of R512E coated Nb C103 manufactured using laser powder bed fusion (L-PBF)

C103 is a niobium based refractory alloy commonly used in the aerospace industry. To protect the metal from high temperature, oxidizing environments, C103 is often coated with an environmental barrier coatings. A common coating for this material is known as R512E, a disilicide slurry applied and curedwith heat. This paper aims to determine the effects on mechanical properties of common post processing techniques used on C103 produced via laser powder bed fusion. Tensile specimens were produced in both horizontal and vertical orientations, post processed via hot isostatic pressing, coated, and further heattreatment to simulate a typical operating environment for the coated material. Tensile tests were then conducted at room temperature and compared to ASTM B654 standards for wrought C103. Strength decreased after HIP and coating but remained unchanged after further heat treat. Grain growth was evident after HIP and coat applications which is in direct correlation with decreasing strength and increasing ductility.