Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
INFLUENCE OF POWDER PARTICLE SIZE IN THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF INCONEL 718 COMPONENTS PRODUCED BY LASER-DIRECTED ENERGY DEPOSITION
Submission Author:
Johan sebastian Grass Nunez , SP , Brazil
Co-Authors:
Johan sebastian Grass Nunez, Daniel Rojas, Fábio Mariani, Alessandro Rodrigues, Reginaldo Coelho
Presenter: Johan sebastian Grass Nunez
doi://10.26678/ABCM.COBEM2023.COB2023-1215
Abstract
Laser Powder – Directed Energy Deposition (LP-DED) is an additive manufacturing (AM) process, this technology allows produce complex geometry and it has gained widespread attention due to is possible uses materials that are difficult to work in conventional process like machining. The use of Inconel 718 increases due to AM process due to it high difficult to machining, this alloy is a commonly used in aerospace and other high-performance applications. In this paper it was investigated the influence of powder particle size on the microstructure and mechanical properties of Inconel 718 parts fabricated by DED. It was using three different groups of size particles and the other parameters was fixed, these groups were divided into 45 - 63 um, 64 - 90 um, and finally a group with 45 - 90 um particles.. It was deposited specimens to analyses microstructure and mechanical properties. The samples were characterized using confocal laser microscopy, scanning electron microscopy (SEM), X-ray energy dispersive spectroscopy (EDX), Vickers microhardness and Small Punch Test (SPT) mechanical assay. This study highlights the importance of selecting the appropriate powder size range for DED fabrication of Inconel 718 parts finding that the greater the difference in particle size, the more porosity and hardness reduction and roughness quality decreases when is using small particles size of the samples
Keywords
Laser Powder Directed energy deposition (LP-DED), Inconel 718, microestructure, Mechanical Properties
