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Journal ArticleDOI

Optimisation of machining parameters in laser aided hybrid machining of Inconel 718

05 May 2016-International Journal of Machining and Machinability of Materials (Inderscience Publishers (IEL))-Vol. 18, Iss: 3, pp 252
TL;DR: In this paper, the authors focused on experimental investigation and optimisation of laser aided hybrid machining of Inconel 718 alloy, where cutting speed, feed rate and laser power were varied each at three levels and total of 27 experiments were conducted.
Abstract: This study focused on experimental investigation and optimisation of laser aided hybrid machining of Inconel 718 alloy. Cutting speed, feed rate and laser power are varied each at three levels and total of 27 experiments are conducted. Cutting force, surface roughness and flank wear are measured. The factor effects on each response are analysed using 3D surface plot. The developed regression model shows good degree of fit. From the analysis of variance, the feed rate and laser power are influencing parameters on the cutting force and surface roughness while cutting speed is for tool wear. The optimal process parameter setting using desirability analysis reveals a reduction of cutting force by 50%, surface roughness by 26%, flank wear by 33% and the tool life is extended up to 133% over conventional machining. The segmentation of saw tooth chip is increased which demonstrated the thermal softening effect compared to conventional machining.
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Journal ArticleDOI
K. Venkatesan1
TL;DR: In this article, the authors investigated the influence of input variables of laser assisted machining on the machinability aspect of the Inconel 718, a high-temperature alloy for high-performance aerospace gas turbine engines components.

65 citations


Cites methods from "Optimisation of machining parameter..."

  • ...Further experimented on Inconel 718 using Nd;YAG laser source with PVD (TiAlN) coated insert at an approach angle of 60 and results reveals about the extended tool life up to 133% that of CM at the determined optimal parameters [22]....

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Journal ArticleDOI
TL;DR: In this article, the machinability of Inconel 718 carbide inserts with low-cost laser assisted machining has been investigated using physical vapour disposition-coated (TiAlN)-carbide inserts in terms of cutting force, surface roughness, flank wear and chip formation.
Abstract: Laser-assisted machining (LAM) is a promising solution for all categories of difficult-to-machine materials like ceramics, metals and composites. Inconel 718, a difficult-to-machine material, is used in critical aero engine components. The objective of the study is to investigate its machining characteristics with low-cost cutting inserts using LAM. Therefore, in this paper, the machinability of this alloy has been investigated using physical vapour disposition-coated (TiAlN) carbide inserts in terms of cutting force, surface roughness, flank wear and chip formation in different range of cutting parameters. This investigation shows the improvement in machining performance of about 46, 36, 34, 50 44 and 68% for feed force, thrust force, cutting force, surface roughness and flank wear when compared to conventional machining (CM). For the criteria of benefit comparison, the detailed geometrical characteristic of produced chip and its morphology evaluation have been carried out under microscopic examination. The amplitude of this reduction is due to the maximum undeformed chip thickness of about 170 μm in LAM compared to CM.

33 citations

Journal ArticleDOI
TL;DR: In this paper, the machinability study under MQL on CNC turning of 617 alloys by AlTiN PVD carbide cutting inserts has been examined using the Taguchi L9 orthogonal array parameter design and response surface optimization.

23 citations

Journal ArticleDOI
TL;DR: In this paper, a comparative performance of input-parameters on cutting force, roughness, tool wear, and chip morphology of sustainable conditions (dry and MQL: minimum quantity lubrication) on Nimonic 90 alloy was investigated.

16 citations

Journal ArticleDOI
TL;DR: Inconel 718 is considered as challenging material for machining as discussed by the authors, and laser beam machining could be a promising choice to deal with such materials for simple to complex machini...
Abstract: Nickel alloys including Inconel 718 are considered as challenging materials for machining. Laser beam machining could be a promising choice to deal with such materials for simple to complex machini...

13 citations


Cites background from "Optimisation of machining parameter..."

  • ...The surface roughness of machined Inconel 718 can be reduced by more than 23% through laser hybrid turning.([8,9]) Machining of curved-shaped Inconel 718 has been reported in([10]) through laser-assisted milling....

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