Romain DELOFFRE began his PhD in October 2024 under the supervision of Julie LARTIGAU (ESTIA-Recherche) and Lorène HERAUD (I2M, ENSAM). His research focuses on the reuse of nickel-based Inconel 625 superalloy powders in additive manufacturing using the Direct Energy Deposition – Laser Powder (DED-LP) process. He is particularly interested in the effects of reusing unmelted powders on the manufacturing process, the resulting microstructure, and the mechanical properties of the produced parts, with a specific emphasis on their fatigue behavior.