Surface alloying using tungsten disulphide powder mixed in dielectric in micro-EDM on Ti6Al4V

Mohanty, Shalini; Kumar, Vijay; Tyagi, Rashi; Kumar, S. Sai; Bhushan, Brij; Das, Alok Kumar; Dixit, Amit Rai

doi:10.1088/1757-899x/377/1/012040

Cited by 10 publications

(3 citation statements)

References 19 publications

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“…Influence of process variables such as voltage, duty factor and WS 2 powder concentration on micro hardness while machining of Ti-6Al-4V was analyzed. Results revealed that the microhardness increases with increase in voltage and powder concentration (10 g l −1 ) [13]. An investigation on machining behavior of Co-Cr-Mo material at different settings of peak current, voltage, pulse on time and powder concentration was conducted.…”

Section: Introductionmentioning

confidence: 99%

Effect of graphene dispersed coconut biodiesel on the Micro ED milling characteristics of Inconel 718 alloy

Arun Pillai,

Saravana Kumar

2023

Surf. Topogr.: Metrol. Prop.

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Micro Electrical discharge milling is a familiar micromachining process for machining of complex microstructures using a cylindrical tool. In this research work, the influence of process parameters namely capacitance, voltage, threshold on response indicators during machining of Inconel 718 with coconut biodiesel and graphene nano powder dispersed coconut biodiesel is investigated in detail. Further, surface-topography of the machined surface was critically examined using scanning electron microscopy and three-dimensional non-contact roughness tester. Graphene nano powder concentration (0.3g/l) increased the MRR around 68 % compared to coconut biodiesel (BD). A medium order of capacitance (10nF) offered a maximum MRR irrespective of dielectric used. With higher order capacitance, the minimum TWR is obtained due to longer pulse off duration. High surface finish is achieved with graphene nano powder dispersed coconut BD due to uniformly distributed of craters on the machined surface. Recast layer thickness is 3.08 μm, 1.62 μm and 2.34 μm with coconut biodiesel, 0.3 g/L and 0.6 g/L graphene particles mixed coconut biodiesel, respectively. Minimum recast layer is observed with graphene particles mixed coconut biodiesel under considered parametric conditions due to lesser eroded particle deposition. EDS results confirm that the sedimentation of graphene nano powder (increase in carbon %) on work surface results in increase in hardness. Crater size, voids and cracks were reduced with graphene nano powder dispersed coconut BD due to uniform distribution of heat energy over machining region. Results showed that the graphene nano powder mixed coconut biodiesel can be the substitute for mineral oil

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Section: Introductionmentioning

confidence: 99%

Effect of graphene dispersed coconut biodiesel on the Micro ED milling characteristics of Inconel 718 alloy

Arun Pillai,

Saravana Kumar

2023

Surf. Topogr.: Metrol. Prop.

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“…Researchers explored the influence of solid lubricant additives in the powder mixed EDD process to achieve a strong and self-lubricating substrate [11][12][13][14][15]. Mohanty et al [11] addressed the development of a hard and self-lubricating surface on titanium alloy utilising molybdenum disulfide (MoS 2 ) through the PMEDM process.…”

Section: Introductionmentioning

confidence: 99%

“…The alloyed layer has a frictional coefficient of 0.07 and a wear rate of (1.79 0.74) × 10 4 mg/m. Mohanty et al [14] performed a preliminary analysis on surface alloying of Ti6Al4V using tungsten disulphide (WS 2 ) mixed additives through the micro-EDM method with electrodes held in reverse polarity. They obtained the low surface roughness at low voltage with a higher powder concentration of WS 2 .…”

Section: Introductionmentioning

confidence: 99%

Process Optimisation and Tribological Behaviour Studies on Surface Modified Al 6061-T6 Alloy Deposited with WS2 Solid Lubricant Layer Through Electrical Discharge Approach

2021

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In this present work, an attempt has been made to deposit the WS 2 layer on the Al 6061-T6 alloy surface through the electrical discharge deposition (EDD) technique. Specified deposition parameters, namely powder concentration (C p ), pulse-on time (P on ), and gap voltage (V g ) with various levels considered during the EDD process. The experimentation was performed for analysing the results of deposition parameters on material deposition rate (MDR), surface roughness (SR), microhardness (MH), layer thickness (LT), and surface characteristics of the WS 2 layer were examined. The results addressed the various intermetallic compounds formed on the deposited surface. A multi-objective optimisation using Box-Behnken design of response surface methodology was utilised to conduct the deposition process. To predict and optimise the appropriate MDR, SR, MH, and LT, the quadratic model was developed using regression analysis and analysis of variance. Based on the developed model, the interaction effects of deposition parameters on the EDD process were explored. The optimal depositing parameters are determined by maximising the MDR and MH and minimising the SR and LT. The validation test results confirm that experimental data are good in agreement with the predicted results, and hence, the model is feasible to predict the responses adequately. The tribological study was carried out for the optimised condition, and surface characteristics on the worn-out surface were analysed. When compared to the base material, the obtained results show a lower coefficient of friction and specific wear rate.

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Review on Surface Modifications of the Workpiece by Electric Discharge Machining

Handa

Goyal

Kumar

2020

Lecture Notes in Mechanical Engineering

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Surface alloying using tungsten disulphide powder mixed in dielectric in micro-EDM on Ti6Al4V

Cited by 10 publications

References 19 publications

Effect of graphene dispersed coconut biodiesel on the Micro ED milling characteristics of Inconel 718 alloy

Effect of graphene dispersed coconut biodiesel on the Micro ED milling characteristics of Inconel 718 alloy

Process Optimisation and Tribological Behaviour Studies on Surface Modified Al 6061-T6 Alloy Deposited with WS2 Solid Lubricant Layer Through Electrical Discharge Approach

Review on Surface Modifications of the Workpiece by Electric Discharge Machining

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