The effect of magnesium content on drilling of Al-Mg-Ti alloy by hole electrical discharge machining process

Eyerci̇oğlu, Ömer; Göv, Kürşad

doi:10.1177/0954405420949211

Cited by 10 publications

(7 citation statements)

References 34 publications

(38 reference statements)

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“…Hence, the surface becomes smoother and surface quality is better when the machined surface cools down. The effectiveness of the magnesium content on EDM drilling of Al-Mg-Ti alloy has been studied by Eyercioglu and Gov [171]. It was found that the MRR is higher when the Al-Mg-Ti alloy has more magnesium because more materials melt and vaporised during the EDM drilling process.…”

Section: Edd On Hard-to-cut Materialsmentioning

confidence: 99%

The state of the art of electrical discharge drilling: a review

Mao

Almeida

et al. 2022

Int J Adv Manuf Technol

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Electrical discharge machining (EDM) is one of the most widely used non-conventional methods to machine electrically conductive materials in the manufacturing industry because of its strong capability in machining difficult-to-cut materials irrespective of their strength and hardness. Electrical discharge drilling (EDD) is an important variant of EDM. Due to the limitation of conventional drilling processes, special holes, particular those with high aspect ratios on hard-to-cut materials, can only be drilled by EDD. Extensive research has been carried out to improve the efficiency and quality of the EDD process by using different approaches, such as assisted EDD and powder-mixed EDM drilling aiming to improve the material removal rate (MRR), tool wear rate (TWR), surface quality and accuracy. This paper provides a comprehensive review of the EDD process. Different methods were compared; the advantages and disadvantages of each process were summarised; state-of-the-art technologies and the latest development were introduced, and research trends and new directions were presented.

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Section: Edd On Hard-to-cut Materialsmentioning

confidence: 99%

The state of the art of electrical discharge drilling: a review

Mao

Almeida

et al. 2022

Int J Adv Manuf Technol

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“…Therefore, the die sinker type’s electric discharge machining (EDM) was recommended as a potential solution over the conventional machining processes to achieve complex geometrical features with tight tolerances on Mg alloys [ 10 ]. In EDM, the discharge energy which causes temperature generation is accountable for the size of the crater formed during machining [ 11 ]. In this relation, the downscaled variant of EDM at the micro-level ( µ EDM) produces smaller discharge energy than macro-EDM amid the excess material subtraction, resulting in the expulsion of a relatively smaller amount of material towards higher precision of the machining [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Surface modification of biodegradable Mg alloy by adapting µEDM capabilities with cryogenically-treated tool electrodes

Davis

Singh

Debnath

et al. 2023

Int J Adv Manuf Technol

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Biomaterials are engineered to develop an interaction with living cells for therapeutic and diagnostic purposes. The last decade reported a tremendously rising shift in the requirement for miniaturized biomedical implants exhibiting high precision and comprising various biomaterials such as non-biodegradable titanium (Ti) alloys and biodegradable magnesium (Mg) alloys. The excellent mechanical properties and lightweight characteristics of Mg AZ91D alloy make it an emerging material for biomedical applications. In this regard, micro-electric discharge machining ( µ EDM) is an excellent method that can be used to make micro-components with high dimensional accuracy. In the present research, attempts were made to improve the µ EDM capabilities by using cryogenically-treated copper (CTCTE) and brass tool electrodes (CTBTE) amid machining of biodegradable Mg AZ91D alloy, followed by their comparison with a pair of untreated copper (UCTE) and brass tool electrodes (UBTE) in terms of minimum machining-time and dimensional-irregularity. To investigate the possible modification on the surfaces achieved with minimum machining-time and dimensional-irregularity, the morphology, chemistry, micro-hardness, corrosion resistance, topography, and wettability of these surfaces were further examined. The surface produced by CTCTE exhibited the minimum surface micro-cracks and craters, acceptable recast layer thickness (2.6 µm), 17.45% improved micro-hardness, satisfactory corrosion resistance, adequate surface roughness ( R a : 1.08 µm), and suitable hydrophobic behavior (contact angle: 119°), confirming improved biodegradation rate. Additionally, a comparative analysis among the tool electrodes revealed that cryogenically-treated tool electrodes outperformed the untreated ones. CTCTE-induced modification on the Mg AZ91D alloy surface suggests its suitability in biodegradable medical implant applications.

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“…10 However, increasing Mg content augmented surface roughness and thickness of recast layer in Electrical discharge drilling of Al-Mg-Ti alloy. 11…”

Section: Introductionmentioning

confidence: 99%

“…10 However, increasing Mg content augmented surface roughness and thickness of recast layer in Electrical discharge drilling of Al-Mg-Ti alloy. 11 In recent years, Electrical Discharge Machining (EDM) has been used as an alternative method to obtain nano-porous biocompatible surfaces similar to the structure of bone. It has been found that EDMtreated surfaces have a positive effect on the biological attachment of human osteoblastic cells and support the growth of bone cells in Ti alloys.…”

Section: Introductionmentioning

confidence: 99%

The use of sintered silver-hydroxyapatite powder added electrodes in electrical discharge machining of Ti-6Al-4 V

Özdemir

Ekmekçi

2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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Al and V ion release from the Ti-6Al-4 V implants due to the long-term interactions with body fluids can cause diseases such as Alzheimer’s, neuropathy, and osteomalacia. Therefore, it is aimed to increase the bonding and biocompatibility between bone and implant by changing the surface roughness, topography, and chemical composition of Ti-6Al-4 V alloy with different physical, chemical, and mechanical methods. The study proposes to obtain a porous surface coated with Ag-Ca-P on a Ti-6Al-4 V workpiece by the use of sintered silver-hydroxyapatite powder added to electrodes in Electrical Discharge Machining. Micronized silver and hydroxyapatite powders were mixed in different proportions by volume using the powder metallurgy method to achieve the proposed aims. A parametric experimental study was conducted and the surface properties of the treated samples were analyzed by optical microscopy, scanning electron microscopy, energy dispersion spectroscopy, and X-ray diffractometry. The results have confirmed the formation of a porous silver-hydroxyapatite-rich layer on the electrical discharged machined Ti-6Al-4 V surfaces. Therefore, it has been concluded that electrical discharge machining is a promising alternative method for obtaining biocompatible functional surfaces.

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The effect of magnesium content on drilling of Al-Mg-Ti alloy by hole electrical discharge machining process

Cited by 10 publications

References 34 publications

The state of the art of electrical discharge drilling: a review

The state of the art of electrical discharge drilling: a review

Surface modification of biodegradable Mg alloy by adapting µEDM capabilities with cryogenically-treated tool electrodes

The use of sintered silver-hydroxyapatite powder added electrodes in electrical discharge machining of Ti-6Al-4 V

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