Effect of sintered electrode on microhardness and microstructure in electro discharge deposition of magnesium alloy

Elaiyarasan, U.; Satheeshkumar, V.; Senthilkumar, C.

doi:10.1515/jmbm-2020-0007

Cited by 14 publications

(3 citation statements)

References 18 publications

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“…This is related to the diffusion of the carbon from the dielectric solution into the workpiece surface when the flashing occurs. This result is in agreement with the Elaiyarasan, 30 Torres, 26 Kumar 31 and John 32 . The results from quantometer analysis agreed to ones obtained by XRD analysis.…”

Section: Effect Of Discharge Current On Copper Diffusionsupporting

confidence: 87%

Study of Electrical Discharge Machining Parameters on Stainless Steel Using Copper Tool Electrode and Its Effect on the Structure and Electrochemical Properties

Karimi¹,

Nabavi-Amri

Soleymanpour³

2021

ACSi

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In this work, the effect of the presence and the diffusion of the Copper from the tool electrode onto the EDMed stainless steel (SS) surface have been investigated by electrochemical impedance spectroscopy (EIS), X-ray diffraction (XRD), Quantometer analysis, and Optical microscopic observations. The Taguchi method was used to study the effects of Pulseon time (ton), Pulse-off time (toff), discharge current (I), and overall machining time (τ) on chemical composition, microstructures, micro-cracks, and electrochemical corrosion of EDMed stainless steel workpieces. The results show that the variation of machining parameters changes the chemical composition of the workpieces. By increasing the discharge current and decreasing the Pulse-on time, the copper and the carbon diffuse onto the surface of the workpiece. Consequently, the chemical composition of the workpiece surface changes, leading to an increment of the corrosion resistance. The XRD analysis shows the formation of Fe2C, Cr3C2, and CuNi. In addition, at higher values of discharge current and ton/toff ratio, the micro-cracks propagate on the surface of the workpiece.

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Section: Effect Of Discharge Current On Copper Diffusionsupporting

confidence: 87%

Study of Electrical Discharge Machining Parameters on Stainless Steel Using Copper Tool Electrode and Its Effect on the Structure and Electrochemical Properties

Karimi¹,

Nabavi-Amri

Soleymanpour³

2021

ACSi

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“…Frangini and Masci 11 realized the dynamic control of the contact force by loading the spring, which effectively restrained the defects of the coating. Elaiyarasan et al 12 deposited WC-Cu coating on magnesium alloy surface by ESD. The process parameters such as compressive load, pulse current and pulse time are selected as test variables for the experiments.…”

Section: Introductionmentioning

confidence: 99%

Effect of discharge parameters on electric-spark deposition material transfer

Hou,

Han,

Zheng

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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In order to study the influence of discharge parameters on the electric spark deposition process, an automatic electric spark deposition device is built by a closed-loop control system of discharge parameters. An automatic electric spark deposition test is carried out at different control voltages. By analyzing the effective discharge waveform parameters, transfer efficiency, deposition efficiency, contact force in the deposition process, surface morphology, and cross-sectional morphology of the deposition layer under different control voltages, etc. Analysis of the results shows that changing the control voltage has a direct effect on the number of discharge types in the deposition process. With the appropriate control voltage, better transfer efficiency and deposition quality can be achieved. Contact discharge has a greater effect on material transfer efficiency than other types of discharge. The transfer of the electrode to the material on the workpiece is mainly achieved by contact discharge. Automatic control of discharge parameters can also be applied to automatic control of discharge pulse types.

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“…Copper-based materials reinforced by WC particles have high hardness, high electrical and thermal conductivity, and high wear resistance. Due to their attractive properties, WC-Cu compositions are promising as electrical contact materials [12,13], electrodes for resistance welding and electrical discharge machining [14,15], and as heat sink materials for fusion applications [16,17]. WC-Cu composites have been manufactured by nonreactive methods, such as infiltration of molten copper into a porous tungsten carbide preform [18,19], sintering of the ex-situ synthesized WC mixed with copper [12,16,20], and stir casting [13].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Tungsten Carbides in a Copper Matrix by Spark Plasma Sintering: Microstructure Formation Mechanisms and Properties of the Consolidated Materials

Vidyuk,

Ukhina,

Gavrilov

et al. 2023

Materials

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In this study, the synthesis of tungsten carbides in a copper matrix by spark plasma sintering (SPS) is conducted and the microstructure formation mechanisms of the composite materials are investigated. The reaction mixtures were prepared by the high-energy mechanical milling (MM) of W, C and Cu powders. The influence of the MM time and SPS temperature on the tungsten carbide synthesis in an inert copper matrix was analyzed. It was demonstrated that the milling duration is a critical factor for creating the direct contacts between the W and C reactants and increasing the reactive transformation degree. A WC–W2C–Cu composite was fabricated from the W–C–3Cu powder mixture milled for 10 min and subjected to SPS at a temperature of 980 °C for 5 min. The formation of unconventional microstructures with Cu-rich regions is related to inter-particle melting during SPS. The WC–W2C–Cu composite showed a promising combination of mechanical and functional properties: a hardness of 300 HV, an electrical conductivity of 24% of the International Annealed Copper Standard, a residual porosity of less than 5%, a coefficient of friction in pair with a WC-6Co counterpart of 0.46, and a specific wear rate of the material of 0.52 × 10−5 mm3 N−1 m−1.

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Effect of sintered electrode on microhardness and microstructure in electro discharge deposition of magnesium alloy

Cited by 14 publications

References 18 publications

Study of Electrical Discharge Machining Parameters on Stainless Steel Using Copper Tool Electrode and Its Effect on the Structure and Electrochemical Properties

Study of Electrical Discharge Machining Parameters on Stainless Steel Using Copper Tool Electrode and Its Effect on the Structure and Electrochemical Properties

Effect of discharge parameters on electric-spark deposition material transfer

Synthesis of Tungsten Carbides in a Copper Matrix by Spark Plasma Sintering: Microstructure Formation Mechanisms and Properties of the Consolidated Materials

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