|About this Abstract
||Materials Science & Technology 2019
||Additive Manufacturing of Metals: Microstructure and Material Properties of Nickel-based Alloys
||LPBF Production of Inconel 939: Powder Evaluation & Process Parameters Investigation
||Simone Parizia, Giulio Marchese, Abdollah Saboori, Mariangela Lombardi, Paolo Fino, Diego Manfredi, Sara Biamino
|On-Site Speaker (Planned)
Inconel 939 (IN939) is a Nickel-based superalloy γ’-reinforced [Ni3(Al,Ti)] used in application such as vanes and blades of marine and land-based gas turbines. This alloy was developed to possess enhanced weldability compared to others γ’-reinforced superalloys such as Inconel 738 LC, making it a promising candidate for the production through LPBF technology. Since there are really few studies about IN939 by LPBF, it is fundamental to determine a good parameter set window for the additive fabrication, in order to obtain a good densification avoiding cracks formation. In this study, morphology and flow properties of the IN939 powder were evaluated using Hall flow test, optical and SEM microscopy and grain size distribution. Several cubic samples of 10 mm per side were produced in IN939 using different parameter sets, and then they were characterized in terms of density, microstructure and hardness. This allowed the definition of an optimized parameter set window.
||Planned: At-meeting proceedings; Planned: At-meeting proceedings