Abstract
This study presents the microstructure and physicochemical properties of explosively welded Inconel 625 and Ti6Al4V platers, which were investigated by scanning electron microscopy, corrosion resistance, and dilatometric measurements. Firstly, the corrosion behavior of Ti6Al4V was tested in sodium sulfate and sodium chloride solutions using potentiodynamic polarization and electrochemical impedance spectroscopy techniques. The experimental results were compared with the data obtained from computer simulation. The investigated corrosion resistance of the explosively welded Inconel 625/Ti6Al4V system in different solutions showed that this system exhibited significantly higher corrosion resistance in NaCl solution than in sodium sulfate. In addition, the corrosion potential of the Ti6Al4V surface tested in sodium chloride is slightly higher compared to the value obtained for the second solution. Moreover, the pioneering dilatometric measurements have been carried out in the temperature range of 298-873 K to determine the linear coefficient values of thermal expansion (α) of investigated samples cut along and perpendicular to the direction of the explosion. They showed close values regardless of the cutting direction. Additionally, α possessed the linear character in the whole investigated temperature range, excluding the phase transitions within the bonded plates.
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Acknowledgments
This research was financially supported by the Institute of Metallurgy and Materials Science of the Polish Academy of Sciences (IMIM PAS) within the statutory work “The interface zone of Inconel 625/Ti6Al4V obtained with the use of explosion energy” Z-5/2020. The purchase of the optical dilatometer Misura® 3 FLEX-ODLT, which was used in the investigations, was financed by the European Regional Development Fund within the frames of Project POIG. 02.01.00-12-175/09. SEM/EDS and dilatometric studies were performed in the Accredited Testing Laboratories at the Institute of Metallurgy and Materials Science of the Polish Academy of Sciences.
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This article is an invited submission to the Journal of Materials Engineering and Performance selected from presentations at the symposium “Wetting, High-Temperature Capillarity, Interface Design and Modeling,” belonging to the area “Processing” at the European Congress and Exhibition on Advanced Materials and Processes (EUROMAT 2021), held virtually from September 12-16, 2021, and has been expanded from the original presentation.
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Wojewoda-Budka, J., Bugajska, M., Guspiel, J. et al. On Selected Properties of Inconel 625/Ti6Al4V Explosively Welded Clad. J. of Materi Eng and Perform 31, 7080–7087 (2022). https://doi.org/10.1007/s11665-022-06897-z
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DOI: https://doi.org/10.1007/s11665-022-06897-z