Pprime Institut, France
Léandra Hereil
Biography
As a young research engineer in Metal Additive Manufacturing at Naval Group, I’m doing a CIFRE PhD in collaboration with Naval Group Angoulême-Ruelle and the Pprime Institut in Poitiers. With a master’s degree in materials engineering, specialised in durability, from the Ecole Nationale Supérieure des Ingénieurs en Arts Chimiques et Technologiques of Toulouse (ENSIACET), I began my career in the field of metal additive manufacturing processes as an assistant engineer trainee at Airbus Helicopters (Marignane, France). I got more experience at Naval Group Lorient, where I held the position of Metallic Additive Manufacturing Engineer during a professional contract in my last year. During my assignments, I studied WAAM-CMT® and PBF-LB/M technologies. Today, my research focuses on identifying, characterising and measuring the effects of reusing Inconel® 625 powder in additive manufacturing using laser fusion of a powder bed for the manufacture of naval equipment.
Conferences
Room |
Date |
Hour |
Subject |
|---|---|---|---|
| Room 7 |
25-03-2026 |
5:40 pm – 6:00 pm |
6 Effect of reusing unmelted Inconel® 625 powder from Laser Powder Bed Fusion onto the powder and end-products characteristics |
Conferences Details
6 Effect of reusing unmelted Inconel® 625 powder from Laser Powder Bed Fusion onto the powder and end-products characteristics
Laser Powder Bed Fusion (L-PBF) is an additive manufacturing process based on the melting of a metal powder layer by layer. Due to the localized fusion, a fraction of the powder volume is unmelted. It is environmentally and economically attractive to use this unmelted powder for subsequent production. However, reused powders may differ chemically and physically from the new ones, due to their exposure to a complex environment. This study focuses on the strategy of reusing Inconel® 625 and the effect of such possibility on the powder characteristics and melted materials properties. In this way, a multi-scaled characterisation allows evaluating qualitatively and quantitatively the influence of reuse on particle characteristics, metallographic quality and mechanical properties of non-heat-treated L-PBF samples. The particle size distribution results show that the average diameter increases by 2 µm after the maximum number of production runs. The apparent density increased for reused powders as compared to new powders. No significant changes of the tensile behaviour of specimens were observed. Our results suggest that Inconel® 625 reuse has no significant impact on powder characteristics, nor on mechanical performance and metallography of L-PBF melted materials.
Keywords: Laser Powder Bed Fusion, Reuse, Powder characteristics, Metallurgy, Inconel 625
