Comparative Analysis of Melt Pool Evolution in Selective Laser Melting of Inconel 625 and Inconel 718 Nickel-Based Superalloys

• Published in: Annals of "Dunărea de Jos" University of Galaţi. Fascicle XII, Welding Equipment and Technology Vol. 34; pp. 119 - 124
• Main Authors: Ben Slama, M., Chatti, S., Kolsi, L.
• Format: Journal Article
• Language: English
• Published: Galati Dunarea de Jos University of Galati, Mechanical Engineering Faculty 30-12-2023; Galati University Press
• Subjects: Additive manufacturing; Alloys; Chemical composition; Corrosion; Heat conductivity; Laser beam melting; Lasers; Material properties; melt pool; Melt pools; Melting; Metal fatigue; Nickel base alloys; nickel-based superalloys; numerical simulation; Process parameters; selective laser melting; Simulation; Software; Superalloys; Temperature; Thermodynamic properties
• ISSN: 1221-4639; 2668-6163
• DOI: 10.35219/awet.2023.10

One of the key advantages of Additive Manufacturing is the versatility in working with a wide range of materials. Among these materials, Nickel-based superalloys have drawn great attention of specialists. This study investigates the behavior of Inconel 625 and Inconel 718 during selective laser melting. While these alloys have many similarities, thus their distinct chemical compositions determine different responses to this new process, which the authors aimed to elucidate in this study. Numerical simulations using ANSYS Additive® software were conducted to compare the melt pool dimensions (depth and width) of Inconel 625 and Inconel 718. The results reveal that the material's thermal properties play a significant role in determining the melt pool geometry. The Inconel 718 consistently exhibited larger melt pool dimensions than Inconel 625. The findings highlight the importance of understanding the connection between the material properties and process parameters.