An ultrasonic vibration post-treatment procedure was suggested for additively manufactured lattices. The aim of the present research was to investigate mechanical properties and the differences in mechanical behavior and fracture modes of Ti6Al4V scaffolds treated with traditional powder recovery system (PRS) and ultrasound vibration (USV). Scannin...
In this work, 316L cubes were produced by Directed Energy Deposition (DED) process. To evaluate the effect of deposition patterns on the microstructure, mechanical performance and residual stress of 316L samples, two different deposition strategies are selected (67° and 90°). The general microstructure is revealed, and then the effect of deposition...
Nowadays, the interest in the additive manufacturing (AM) field is not only from a technological point of view, but also from a materials perspective. The advantages of printing functional parts allowed the transition from AM intended as mere prototypes factory, to complete production process for small batches of highly customized devices. Especial...
In order to assess the potentialities of additive manufacturing in nuclear industry, Oxide Dispersion Strengthened (ODS) Fe[sbnd]14Cr steels are produced by laser powder bed fusion (L-PBF). Such materials are currently manufactured by milling a Fe[sbnd]14Cr atomized powder with Y2O3 and TiH2 powders. The resulting powder has a non-spherical shape b...
Ces travaux de thèse portent sur la mise au point de la technologie Aérosol Jet printing (AJP) pour réaliser des composants hyperfréquences dans la bande des fréquences millimétriques et pour répondre à des problématiques d’intégration 3D de composants. Le premier chapitre est consacré à une étude bibliographique pour comparer les différentes techn...
Published in Journal of Mechanical Science and Technology
3D printing technology is gaining attention as one of the key technologies that will lead the fourth industrial revolution. In addition, the field of application is from trial production to mass production of products. However, in many cases, the application area is limited to the geometrical shape building of products. This paper shows an example ...
Published in Journal of Mechanical Science and Technology
We investigated the microstructural characteristics and mechanical properties of stainless-steel 316L parts fabricated by directed energy deposition (DED) process, which is one of the additive manufacturing (AM) technologies. In this research, the 316L parts were fabricated by DED process by varying three process parameters: Laser power, scanning s...
Rapid melting and solidification cycle during additive manufacturing provides a non-equilibrium environment that generates a large amount of internal defects, including dislocations, precipitations, and solute heterogeneity. These internal defects not only enhance the strength of materials by interacting with mobile dislocations but also reduce duc...
Published in Archives of Civil and Mechanical Engineering
In this research work, four groups of selective laser melted specimens were built from AlSi10Mg-0403 powder. Each group represents the direction with respect to the bed in which the specimens are built (X, Y, Z and 45° orientation). The mechanical properties of the specimens are characterized in terms of yield strength, ultimate tensile strength, Y...
Published in Archives of Civil and Mechanical Engineering
Additive Manufacturing (AM) technologies are increasingly applied in various industries since they provide the possibility to manufacture the components with high geometrical complexity easier and faster than traditional processes. However, the subsequent semi-finish/finish machining operations such as drilling, turning and/or milling are still nec...
