Influence of the Inclination Angle of 3D-Printed Inconel Alloy 718 on Its Corrosion Resistance
Aleksandra Iwańczak, Katarzyna Skibińska, Krzysztof Żaba, Maciej Balcerzak, Konrad Wojtaszek, Sławomir Kąc, Piotr Żabiński
TL;DR
This study shows how the printing angle affects the corrosion resistance of 3D-printed Inconel 718, impacting its durability in harsh environments.
Contribution
The novelty is a systematic multi-method evaluation of inclination angle's role in controlling corrosion in 3D-printed Inconel 718.
Findings
Inclination angle significantly affects corrosion rate and electrochemical kinetics in 3D-printed Inconel 718.
Mass loss, Icorr values, and surface degradation vary with different build orientations.
Build orientation influences microstructural anisotropy and surface characteristics, affecting corrosion susceptibility.
Abstract
This study aimed to investigate the influence of the synthesis parameters on the corrosion resistance of 3D-printed Inconel 718 components. Samples were fabricated using laser powder bed fusion (PBF-LB/M) with different angles of inclination. Corrosion tests were conducted by immersion for 1000 h in a 3.5% aqueous NaCl solution at 20 °C and 45 °C, and by the potentiodynamic polarization measurements. Detailed analysis of changes in morphology, chemical composition, and roughness of 3D prints was performed using scanning electron microscopy, combined with energy-dispersive X-ray spectroscopy, and optical profilometry. To quantify the dissolution of alloy components during the long-term measurements, the post-corrosion solutions were analyzed using microwave plasma–atomic emission spectroscopy. The obtained results demonstrate that inclination angle significantly affects corrosion rate…
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Taxonomy
TopicsAdditive Manufacturing Materials and Processes · Additive Manufacturing and 3D Printing Technologies · High-Temperature Coating Behaviors