Mechanical and Fracture Properties for As-Built 3DMD Inconel 718: Stability to Process Parameters Variation

Thursday, May 8, 2025: 8:50 AM
Room 2 (Vancouver Convention Centre)
Dr. Ondrej Kovarik , Czech Technical University, Faculty of Nuclear Sciences and Physical Engineering, Prague, Czech Republic
Dr. Simone Maffia , Ponticon GmbH, Wiesbaden, Germany
Mr. Filip Wick , Institute of Plasma Physics of the Czech Academy of Sciences, Prague, Czech Republic, Czech Technical University, Faculty of Nuclear Sciences and Physical Engineering, Prague, Czech Republic
Mr. Vojtech Lukes , Institute of Plasma Physics of the Czech Academy of Sciences, Prague, Czech Republic, Czech Technical University, Faculty of Nuclear Sciences and Physical Engineering, Prague, Czech Republic
Dr. Jaroslav Cech , Czech Technical University, Faculty of Nuclear Sciences and Physical Engineering, Prague, Czech Republic
Dr. Jan Cizek , Institute of Plasma Physics of the Czech Academy of Sciences, Prague, Czech Republic
Dr. Tobias Stittgen , Ponticon GmbH, Wiesbaden, Germany
A complete parametric study of the influence of laser power (1.8, 2.1, and 2.4 kW) and scanning velocity (40, 50, 60 m/min) on microstructure and properties of as-built 3DMD Inconel 718 was performed. All deposits exhibited only minor microstructure variations as observed by EBSD. Consequently, it was shown that in terms of hardness, stress-strain, and fracture properties, the deposition method is very robust as the results typically differed by less than 10% even when comparing the two farthest melt pool heat input deposition conditions. It is suggested that the robustness of the method at the used conditions can be attributed to the control of the melt pool temperature by increasing the melt pool size.
See more of: Novel Processes - Hybrid Manufacturing, Laser Processing, Additive Manufacturing and Repair IV
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