On the Machinability and Surface Finish of Superalloy GH909 Under Dry Cutting Conditions

Luo, Ming; Li, Haizhen

doi:10.1590/1980-5373-mr-2017-1086

Cited by 8 publications

(3 citation statements)

References 25 publications

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“…At a higher feed rate, the friction among work material and tool will be more owing to the larger cross-sectional area in the deformation region and consequently surface roughness increases. 34 It is distinguished that the geometrical theoretical surface roughness parameter is mainly function of the feed for a recognized nose radius and varies with the feed rate square value. 35 When the value of feed rate increases, the surface roughness augments owing to raised MRR at a specific speed and vibrations and tool chatter.…”

Section: Resultsmentioning

confidence: 99%

Turning performance analysis and optimization of processing parameters using GRA-PSO approach in sustainable manufacturing

Panigrahi

Panda

Sahoo

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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The main aim of this research work is to examine the impact of input process factors (cutting speed, feed rate, and depth of cut) on machining characteristics (arithmetic mean surface roughness, tool flank face wear and tool chip interface temperature) and further to optimize during turning of Incoloy alloy 800. The cutting tool used was PVD multilayer coated (TiAlN-TIN) carbide insert. The experiment was performed based on Taguchi L27 methodology with a focus on the sustainability of turning. Sustainable manufacturing is considered for accomplishing overall efficiency with regard to economic, environmental and social aspects. The ANOVA (Analysis of Variance) was employed to assess the contributions of input process variables on cutting variable outputs. Further, the main effect diagrams exemplified the influences of main parameters on response variables. ANOVA analysis results demonstrated that the feed rate was the most leading factor that affects average surface roughness. The relationship(s) among input process factors and the evaluated measured outputs are determined using a quadratic regression model. Taguchi grey relational analysis has been implemented to trial results so as to optimize responses. The results revealed that the grey relational grade is significantly improved (0.308) through the setting of optimal parametric combinations. This integrated Grey–Taguchi approach was established quite effectual for simultaneously optimization of multifaceted machining output responses of turning process. This study provides a novel strategy to develop the machining efficiency of Incoloy 800 steel toward the improvement of sustainable processes and provide suitable applications in aerospace industry.

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Section: Resultsmentioning

confidence: 99%

Turning performance analysis and optimization of processing parameters using GRA-PSO approach in sustainable manufacturing

Panigrahi

Panda

Sahoo

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…studied the machinability of the nickel based alloy workpiece in the dry cutting process, and obtained the friction coefficient of is μ=0.5. 87 After calculation, the shear angle is φ = 26.6°.…”

Section: Resultsmentioning

confidence: 99%

Study on phase transformation in cutting Ni-base superalloy based on molecular dynamics method

Hao

Lou

Fan

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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Nickel-based single crystal alloys are widely used in aerospace and other important fields of national defense due to their excellent properties. Phase transformation occurs during high-speed cutting of nickel-based single crystal alloy, which seriously affects the surface quality. It is of great significance to carry out theoretical research on phase transformation for improving the machining quality of nickel-based alloy. In this paper, molecular dynamics method is used to study the nano-cutting of single crystal nickel-based alloy with silicon nitride ceramic tool. The mechanism of phase transformation and the effect of cutting speed on phase transformation in workpieces are studied in detail. The nano-cutting model is established. Morse potential functions for molecular dynamics simulation are calculated, and EAM and Tersoff potential functions are selected. The effect of cutting speed on phase transformation was studied by using radial distribution function, coordination number analysis, common neighbor analysis, and the deep reasons for the sharp change of lattice structure were analyzed from many aspects. Finally, in order to verify the universality of the research results and explore the new properties of compression, nano compression (the same strain rate as the nano cutting process) was simulated. The results show that the increase of cutting speed leads to the increase of hydrostatic stress, the increase of energy in crystal and the rise of cutting temperature. As a result, the change of lattice structure becomes more and more intense, and the conversion rate of different crystal structures increases greatly.

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“…There are studies that have employed these tool coatings in the machining of Inconel 718, both PVD and CVD, as well as uncoated tools. The use of uncoated tools for machining Inconel alloys (namely Inconel 718) is not advised, especially at higher cutting speeds [21]. The main wear mechanisms that these uncoated (WC-Co) tools present are adhesive and abrasive wear, which are considerably higher when compared with those of coated tools tested at higher feed values [22].…”

Section: Introductionmentioning

confidence: 99%

Wear Behavior Phenomena of TiN/TiAlN HiPIMS PVD-Coated Tools on Milling Inconel 718

Sousa

Fernandes

Silva

et al. 2023

Metals

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Due to Inconel 718’s high mechanical properties, even at higher temperatures, tendency to work-harden, and low thermal conductivity, this alloy is considered hard to machine. The machining of this alloy causes high amounts of tool wear, leading to its premature failure. There seems to be a gap in the literature, particularly regarding milling and finishing operations applied to Inconel 718 parts. In the present study, the wear behavior of multilayered PVD HiPIMS (High-power impulse magnetron sputtering)-coated TiN/TiAlN end-mills used for finishing operations on Inconel 718 is evaluated, aiming to establish/expand the understanding of the wear behavior of coated tools when machining these alloys. Different machining parameters, such as cutting speed, cutting length, and feed per tooth, are tested, evaluating the influence of these parameters’ variations on tool wear. The sustained wear was evaluated using SEM (Scanning electron microscope) analysis, characterizing the tools’ wear and identifying the predominant wear mechanisms. The machined surface was also evaluated after each machining test, establishing a relationship between the tools’ wear and production quality. It was noticed that the feed rate parameter exerted the most influence on the tools’ production quality, while the cutting speed mostly impacted the tools’ wear. The main wear mechanisms identified were abrasion, material adhesion, cratering, and adhesive wear. The findings of this study might prove useful for future research conducted on this topic, either optimization studies or studies on the simulation of the milling of Inconel alloys, such as the one presented here.

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On the Machinability and Surface Finish of Superalloy GH909 Under Dry Cutting Conditions

Cited by 8 publications

References 25 publications

Turning performance analysis and optimization of processing parameters using GRA-PSO approach in sustainable manufacturing

Turning performance analysis and optimization of processing parameters using GRA-PSO approach in sustainable manufacturing

Study on phase transformation in cutting Ni-base superalloy based on molecular dynamics method

Wear Behavior Phenomena of TiN/TiAlN HiPIMS PVD-Coated Tools on Milling Inconel 718

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