| Title |
Characteristics of Metal Additive Manufacturing for the Fabrication of Inconel 625-pure Copper Bimetallic Structure with High Heat Resistant and Heat Conduction |
| DOI |
https://doi.org/10.5370/KIEE.2024.73.5.893 |
| Keywords |
Additive Manufacturing(AM); Directed Energy Deposition (DED); Bimetallic structure; Pure copper; Inconel 625 |
| Abstract |
DED(Directed energy deposition) is one of the additive manufacturing process that uses high intensity laser beam to make a melt pool onto a substrate while supplying metal material to the beam focusing area to fabricate components. This offers the advantage of enabling the 3D shape addition on the existing part and even deposit different materials from the existing ones. Thanks to these process characteristics, many attempts are being made to enhance functionality by depositing new materials that can compensate for the shortcomings of existing parts. This study investigates the possibility of depositing a Ni-based alloy, specifically Inconel 625, onto a pure copper substrate through the DED process with the goal of enabling operation in high-temperature and high-pressure environments, such as gas turbines or turbojet engines, by simultaneously achieving high thermal conductivity and high-temperature strength. A parametric study was conducted on process variables such as the Inconel 625 powder feed rate, laser output, and travel speed. Furthermore, experimental results were analyzed through observations using an optical microscope and EDS analysis of the deposition interface. |