Performance of Additive Mixed Electro-Discharge Machining of Inconel 718 Super Alloys

Paul, Binay Kumar (2018) Performance of Additive Mixed Electro-Discharge Machining of Inconel 718 Super Alloys. MTech thesis.

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Abstract

In the present work, Performance of Additive mixed Electro-Discharge Machining of Inconel 718 Super Alloys has been attempted. Since, traditional machining routes are inappropriate for difficult-to-cut materials (like Inconel 718 super alloys); EDM process has been adapted. In contrast to conventional EDM (no powder); addition of conductive powder particles into the dielectric media has been recommended in literature in order to improve machinability of super alloys. Experiments have bee performed by varying peak discharge current and pulse duration; Copper powder (400 Mesh) has been added to the EDM oil (dielectric media). Performance of powder-mixed EDM has been analyzed in terms of material removal efficiency, surface roughness, surface crack density and white layer thickness. EDS and XRD tests have been carried out to understand chemical composition and metallurgical aspects of the machined surface (viz. material migration, phase, extent of grain refinement, formation of intermetallic compounds, residual stress) as compared to ‘as received’ parent material.

Item Type:Thesis (MTech)
Uncontrolled Keywords:Electro discharge machining (EDM); Inconel 718; Powder mixed EDM; EDS; XRD
Subjects:Engineering and Technology > Mechanical Engineering > Production Engineering
Divisions: Engineering and Technology > Department of Mechanical Engineering
ID Code:9739
Deposited By:IR Staff BPCL
Deposited On:27 Mar 2019 11:38
Last Modified:27 Mar 2019 11:38
Supervisor(s):Datta, Saurav

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