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Experimental study on structural parameters of wire arc additive manufacturing on nickel based alloy using argon arc welding
B. Kiran,
Published in Politechnica University of Bucharest
2020
Volume: 82
   
Issue: 3
Pages: 167 - 178
Abstract
Although improvement of Additive Manufacturing is growing rapidly, secondary sector is demanding for manufactured samples with large dimensions. Laser Metal Deposition methods are not able to produce samples with required dimensions. In this situation Wire-Arc Additive Manufacturing provides large amount of deposition rates without any size constraints. Hence, WAAM is chosen as the best additive manufacturing for producing the near-net shape mechanical components with good mechanical properties which are used in aeronautical industries like aircraft parts, making efficient and lighter engines. The main aim of this paper was to successfully manufacture a rectangular bar using Wire Arc Additive Manufacturing (WAAM) with ERNiCr-3 as filler material using Gas tungsten Arc Welding (GTAW) through deposition on mild steel plate. Microstructure to be examined for different deposited layers and observe the variation whether any cracks or defects are present to check the sustainability for fabrication of the component. To get Macrostructure images for the clear view of different passes and layers deposited. Wear test results to be studied for the variation of wear depth and Coefficient of friction against time. Scanning Electron Microscopy (SEM) to be carried out to get the surface topography of the component and identification of dendritic and inter-dendritic structures, Energy Dispersive XRay Spectroscopy (EDAX) is conducted for identifying the chemical composition of the component and X-Ray Diffraction (XRD) is conducted for identifying the secondary phases in the grains. Hardness test is performed on different layers to check the hardness. © 2020, Politechnica University of Bucharest. All rights reserved.
About the journal
JournalUPB Scientific Bulletin, Series D: Mechanical Engineering
PublisherPolitechnica University of Bucharest
ISSN14542358