Influence of wire-EDM textured conventional tungsten carbide inserts in machining of aerospace materials (Ti–6Al–4V alloy)

Manikandan, N.; Arulkirubakaran, D.; Palanisamy, D.; Raju, Ramesh

doi:10.1080/10426914.2018.1544712

Cited by 86 publications

(14 citation statements)

References 27 publications

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“…One of the main nonconventional technologies that is widely used to manufacture conductive parts regardless of their hardness is electrical discharge machining (EDM). EDM has been widely used for the manufacturing of dies and molds and of aerospace parts [1,2,3,4]. The mechanism of material removal is the result of electrical discharge, which causes local melting and evaporation of a small volume of material.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Influence of Reduced Graphene Oxide Flakes in the Dielectric on Surface Characteristics and Material Removal Rate in EDM

Świercz¹,

Oniszczuk-Świercz²

2019

Materials

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Electrical discharge machining (EDM) is an advanced technology used to manufacture difficult-to-cut conductive materials. However, the surface layer properties after EDM require additional finishing operations in many cases. Therefore, new methods implemented in EDM are being developed to improve surface characteristics and the material removal rate. This paper presents new research about improving the surface integrity of 55NiCrMoV7 tool steel by using reduced graphene oxide (RGO) flakes in the dielectric. The main goal of the research was to investigate the influence of RGO flakes in the dielectric on electrical discharge propagation and heat dissipation in the gap. The investigation of the influence of discharge current I and pulse time ton during EDM with RGO flakes in the dielectric was carried out using response surface methodology. Furthermore, the surface texture properties and metallographic structure after EDM with RGO in the dielectric and conventional EDM were investigated and described. The obtained results indicate that using RGO flakes in the dielectric leads to a decreased surface roughness and recast layer thickness with an increased material removal rate (MRR). The presence of RGO flakes in the dielectric reduced the breakdown voltage and allowed several discharges to occur during one pulse. The dispersion of the discharge caused a decrease in the energy delivered to the workpiece. In terms of the finishing EDM parameters, there was a 460% reduction in roughness Ra with a uniform distribution of the recast layer on the surface, and a slight increase in MRR (12%) was obtained.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Influence of Reduced Graphene Oxide Flakes in the Dielectric on Surface Characteristics and Material Removal Rate in EDM

Świercz¹,

Oniszczuk-Świercz²

2019

Materials

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“…The reason lies in the different properties and machining characteristics of the CFRP and titanium alloy. For instance, the anisotropic architecture and high abrasiveness of the fibrous composites often lead to severe hole damage and excessive drill wear [2,[16][17][18][19], while the titanium alloys show poor thermal conductivity, high hardness and low elastic modulus [20][21][22][23][24][25], resulting in high cutting forces, excessive machining temperatures and catastrophic tool failures like microchipping or edge fracture. As such, machining of these multilayer stacks with desired quality has been a challenging task in the modern aerospace community.…”

Section: Introductionmentioning

confidence: 99%

A Review on the Machinability of Aerospace-Grade CFRP/Titanium Stacks

Xu¹,

Chen²,

Davim³

et al. 2021

Adv. Mater. Lett.

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“…Ti-6Al-4V is the most widely used titanium alloy in aerospace, biomedicine and the petrochemical industry because of its excellent performance, such as high specific strength, fine corrosion resistance, outstanding tissue compatibility and good weldability [1][2][3][4], and various advanced technologies to further enhance its performances have attracted increasing attention [5][6][7]. Magnetoplastic effects first reported in 1987 [8] are a kind of phenomena that can occur in various materials, including metals [9][10][11][12][13][14], semiconductors [9,10,15,16], ionic crystals [8][9][10][17][18][19], etc.…”

Section: Introductionmentioning

confidence: 99%

Effects of Magnetic Field on the Residual Stress and Structural Defects of Ti-6Al-4V

Zhang

Zhao

Cai

et al. 2020

Metals

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In this work, the influences of a magnetic field of 2.4 T on the macro residual stress and the status of structural defects, including grain boundaries, dislocations and the Fe-rich clusters of Ti-6Al-4V were investigated by X-ray Diffraction (XRD), Electron Backscatter Diffraction (EBSD) and magnetic measurement. The XRD test results show that the applied magnetic field can cause the relaxation and homogenization of macro residual stress. The maps of Kernel Average Misorientation (KAM) values obtained by EBSD tests present a significant dislocation multiplication caused by a magnetic field, and the rise of dislocation density was estimated to be about 32% by XRD tests. The EBSD test results also show an increase in the fraction of Coincidence Site Lattice (CSL) grain boundaries and a decrease in the fraction of low-angle grain boundaries. The results of magnetic measurement show that Ti-6Al-4V has mixed magnetism consisting of paramagnetism and weak ferromagnetism, and that the ferromagnetic saturation magnetization decreased after exposing the alloy to the magnetic field, which suggests the dissolution of the Fe-rich clusters in the alloy. These magnetically-induced changes are related to magnetoplastic effects, a kind of phenomena on which there have been some research, and the possible mechanism of them is discussed in this paper.

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Influence of wire-EDM textured conventional tungsten carbide inserts in machining of aerospace materials (Ti–6Al–4V alloy)

Cited by 86 publications

References 27 publications

Investigation of the Influence of Reduced Graphene Oxide Flakes in the Dielectric on Surface Characteristics and Material Removal Rate in EDM

Investigation of the Influence of Reduced Graphene Oxide Flakes in the Dielectric on Surface Characteristics and Material Removal Rate in EDM

A Review on the Machinability of Aerospace-Grade CFRP/Titanium Stacks

Effects of Magnetic Field on the Residual Stress and Structural Defects of Ti-6Al-4V

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