Results of Surface Integrity and Fatigue Study of Wire-EDM Compared to Broaching and Grinding for Demanding Jet Engine Components Made of Inconel 718

Nickel-based superalloys remain the most widely used of all materials in aerospace industry, contributed over 50 % of the weight of a jet engine. In machining of any jet engine components, it is necessary to satisfy the surface quality or surface integrity requirements to facilitate high reliability components. In the present study, surface integrity of Inconel 718 was studied when drilling under different lubricants. The holes were drilled individually using indexable AlTiN coated carbide drill under minimum quantity of lubricant (MQL) conditions. The results demonstrated that the machining conditions and lubricants strongly influence the surface integrity. The surface roughness decreases with the increase in cutting speed and increases with the increase in feed rate. Microhardness profiles indicated that the subsurface deformation extends up to a 100 and 150 μm for palm oil and synthetic ester, respectively underneath the machined surface. Pit holes, cavities, grooves, microcracks and surface smearing were the dominant surface damages criteria for all cases.

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Surface Integrity of Inconel 718 by Wire-EDM at Different Energy Modes

Journal of Materials Engineering and Performance ◽

10.1007/s11665-014-1048-y ◽

2014 ◽

Vol 23 (8) ◽

pp. 3051-3057 ◽

Cited By ~ 8

Author(s):

L. Li ◽

X. T. Wei ◽

Y. B. Guo ◽

W. Li ◽

J. F. Liu

Keyword(s):

Surface Integrity ◽

Inconel 718 ◽

Wire Edm

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FLYLITE ZRE-1

Alloy Digest ◽

10.31399/asm.ad.mg0002 ◽

1952 ◽

Vol 1 (2) ◽

Keyword(s):

Compressive Strength ◽

High Temperature ◽

Physical Properties ◽

Tensile Properties ◽

Base Alloy ◽

Heat Treating ◽

Jet Engine ◽

Temperature Performance ◽

Engine Components ◽

Temperature Applications

Abstract Flylite ZRE-1 is a creep resistant magnesium-base alloy primarily designed for jet engine components and other high temperature applications. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as creep. It also includes information on high temperature performance as well as casting, heat treating, machining, and joining. Filing Code: Mg-2. Producer or source: Howard Foundry Company.

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Effect of tool wear on the surface integrity of Inconel 718 in face milling with cemented carbide tools

Wear ◽

10.1016/j.wear.2021.203752 ◽

2021 ◽

pp. 203752

Author(s):

A.R.F. Oliveira ◽

L.R.R. da Silva ◽

V. Baldin ◽

M.P.C. Fonseca ◽

R.B. Silva ◽

...

Keyword(s):

Tool Wear ◽

Surface Integrity ◽

Inconel 718 ◽

Face Milling ◽

Cemented Carbide ◽

Cemented Carbide Tools

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Study on surface integrity and material removal mechanism in eco-friendly grinding of Inconel 718 using numerical and experimental investigations

The International Journal of Advanced Manufacturing Technology ◽

10.1007/s00170-020-06528-8 ◽

2021 ◽

Author(s):

Hamed Esmaeili ◽

Hamed Adibi ◽

Seyed Mehdi Rezaei

Keyword(s):

Surface Integrity ◽

Inconel 718 ◽

Material Removal ◽

Experimental Investigations ◽

Removal Mechanism ◽

Material Removal Mechanism

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Surface Integrity Evaluation When Turning Inconel 718 Alloy Using Sustainable Lubricating-Cooling Approaches

International Journal of Precision Engineering and Manufacturing-Green Technology ◽

10.1007/s40684-021-00310-1 ◽

2021 ◽

Author(s):

Le Gong ◽

Rachele Bertolini ◽

Stefania Bruschi ◽

Andrea Ghiotti ◽

Ning He

Keyword(s):

Surface Integrity ◽

Inconel 718 ◽

Inconel 718 Alloy

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Parameter Optimization of Ball End Milling Process on Inconel 718 Using RSM and TLBO Algorithm

Journal for Manufacturing Science and Production ◽

10.1515/jmsp-2014-0055 ◽

2015 ◽

Vol 15 (3) ◽

pp. 293-300 ◽

Cited By ~ 1

Author(s):

Nandkumar N. Bhopale ◽

Nilesh Nikam ◽

Raju S. Pawade

Keyword(s):

Surface Roughness ◽

Response Surface Methodology ◽

Response Surface ◽

Surface Integrity ◽

Inconel 718 ◽

Tool Path ◽

End Milling ◽

Spindle Speed ◽

Depth Of Cut ◽

Ball End Milling

AbstractThis paper presents the application of Response Surface Methodology (RSM) coupled with Teaching Learning Based Optimization Technique (TLBO) for optimizing surface integrity of thin cantilever type Inconel 718 workpiece in ball end milling. The machining and tool related parameters like spindle speed, milling feed, axial depth of cut and tool path orientation are optimized with considerations of multiple response like deflection, surface roughness, and micro hardness of plate. Mathematical relationship between process parameters and deflection, surface roughness and microhardness are found out by using response surface methodology. It is observed that after optimizing the process that at the spindle speed of 2,000 rpm, feed 0.05 mm/tooth/rev, plate thickness of 5.5 mm and 15° workpiece inclination with horizontal tool path gives favorable surface integrity.

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