Study of Surface Properties in Particulate-Reinforced Metal Matrix Composites (MMCs) Using Powder-Mixed Electrical Discharge Machining (EDM)

Sidhu, Sarabjeet Singh; Batish, Ajay; Kumar, Sanjeev

doi:10.1080/10426914.2013.852211

Cited by 121 publications

(32 citation statements)

References 15 publications

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“…In order to prevent the formation of surface cracks, high roughness and thick recast layer during EDM, number of advancements in EDM process has been employed by many Downloaded by [George Mason University] at 06: 41 22 June 2016 researchers such as Ultrasonic Vibration Assisted EDM (UVAEDM) [20], Rotary Assisted EDM (RAEDM) [21], HyFlex EDM [22], Electro Discharge Coating/surface modification by composite or green tool electrode [23][24][25][26][27][28], Near Dry EDM [29] and Powder Mixed EDM (PMEDM) [30][31][32][33][34][35][36]. Among them, PMEDM has been considered the most promising approach to enhance the surface quality by reducing surface crack density [37].…”

mentioning

confidence: 99%

Experimental investigations in powder mixed electric discharge machining of Ti–35Nb–7Ta–5Zrβ-titanium alloy

Prakash

Kansal

Pabla

et al. 2016

Materials and Manufacturing Processes

184

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The present research is the first type of study, in which the application of powder mixed electrical discharge machining (PM-EDM) for the machining of β-phase titanium (β-Ti) alloy has been proposed. β-Ti alloys are new range of titanium alloys, which has wide spread application in dental, orthopaedics, shape memory, and stents. The aim of the present study is to fabricate submicro-and nano scale topography by PMEDM process to enhance the biocompatibility without affecting machining efficiency. The effect of Si powder concentration along with pulse-current and duration on the surface and machining characteristics has been investigated. A significant decrease in surface crack density on the machined surface with 4 g/l Si powder concentration was observed. When β-Ti alloy was modified at 15 A pulse-current, longer pulse interval with 8 g/l concentration of Si powder particles, the interconnected surface porosities with pore size 200-500 nm was observed. Moreover, at Si powder concentration of 2 and 4 g/l, the recast layer thickness is 8µm and 2-3 µm, respectively. Elemental mapping analysis confirmed that PMEDM also generated carbides and oxides enriched surface, a favourable surface chemistry to enhance the biocompatibility of β-Ti alloy. Furthermore, Downloaded by [George Mason University] at 06:41 22 June 2016 2 PMEDM also enhances the machining performance by improving MRR and reducing TWR.

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mentioning

confidence: 99%

Experimental investigations in powder mixed electric discharge machining of Ti–35Nb–7Ta–5Zrβ-titanium alloy

Prakash

Kansal

Pabla

et al. 2016

Materials and Manufacturing Processes

184

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“…In the field of die sinking EDM, many investigations have been carried out using metal powder additives in dielectric medium to improve the MRR and surface characteristics. Conductive metal powder reduces the dielectric strength of the fluid and thereby increases the spark energy across the two electrodes, thus, enhances the stability of the process and improves the performance measures (Kansal et al, 2005;Sidhu et al, 2014). As per the literature available, no research work found on powder mixed dielectric in WEDM.…”

Section: Literature and Motivation For Present Workmentioning

confidence: 99%

An experimental study on trim cutting operation using metal powder mixed dielectric in WEDM of Nimonic-90

Kumar¹,

Jangra²,

Kumar³

2016

10.5267/j.ijiec

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This paper presents an experimental study on rough cut, trim cut using distilled water as a dielectric fluid and Al & Si metal powders in dielectric fluid for WEDM of Nimonic-90. First, the influence of discharge energy (DE) in rough cut is evaluated for machining rate (MR) and surface roughness (SR) and compared with trim cut without any metal powder additives in dielectric fluid. The effect of Al and Si metal powders (varying concentration of 1g/L, 2g/L and 3g/L) in dielectric fluid is studied separately and comparison is also made for MR, SR, recast layer and micro hardness of machined Nimonic-90. From the results it is observed that using trim cut, a fine and uniform surface texture is obtained irrespective of the high discharge energy of rough cut. Al and Si powders additives show a significant reduction in MR for trim cutting operation whereas a remarkable modification is obtained in surface textures after trim cut using metals powder mixed dielectric. SR improves with a concentration of 1g/L and shows a little increase with high concentration of both metals powder. Using metals powder in dielectric fluid, the recast layer becomes smooth and denser and thus, micro hardness increases.

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“…Due to its lightweight Aluminum composite also has a huge application in automobile sector but due to its low melting point and low strength its use has been restricted to that component which has an application of high heat treatment areas. Many researchers found [1][2][3] Silicon Carbide/Silicon Nitride are very suitable ceramic composites which could raise the strength and thermo-physical composite properties but due to their high sintering temperature its difficult to fabricate. SiC either in particle or in whisker form can be added within the Al-A359 composites by P/M route.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Modelling of EDM of Aluminum Particulate Metal Matrix Composites Considering Temperature Dependent Properties

Chaudhury¹,

Samantaray²

2019

RCMA

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This research paper deals with the study of the thermal modeling of Al-A359 reinforced with 10 % SiC Composites (Particulate metal matrix Composite) machined by Electrical Discharge machining (EDM). The composite has been fabricated by Powder metallurgy (P/M) route. Due to high hardness of the Graphite reinforced particle it has been always difficult to machine these composites by the conventional machining route. In this investigation EDM procedure has been introduced to machining the PMMC. The numerical model has been developed by designing a 3D axi-symmetric work domain with the help of Finite analysis software. The effect of variable thermal properties on the modeling of PMMC is also introduced in this study. The effect of three different types of heat source (Disk heat, Point heat & Gaussian heat source) on the Al-A359 Composite machining has been analyzed. From the analysis it can be concluded that the Gaussian heat source model with varying Specific heat (Model-III) has been validated with the experimental result with least error of 11 %. The highest Material removal rate of 25.12 (*10 -3 mm 3 /min). At 10 A current, 100V voltage and 100µS Pulse-On time has been estimated. Keywords:powder metallurgy, particulate metal matrixes composite, thermal modeling, electrical discharge machining, finite element method, specific heat, heat flux, material removal rate

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Study of Surface Properties in Particulate-Reinforced Metal Matrix Composites (MMCs) Using Powder-Mixed Electrical Discharge Machining (EDM)

Cited by 121 publications

References 15 publications

Experimental investigations in powder mixed electric discharge machining of Ti–35Nb–7Ta–5Zrβ-titanium alloy

Experimental investigations in powder mixed electric discharge machining of Ti–35Nb–7Ta–5Zrβ-titanium alloy

An experimental study on trim cutting operation using metal powder mixed dielectric in WEDM of Nimonic-90

Finite Element Modelling of EDM of Aluminum Particulate Metal Matrix Composites Considering Temperature Dependent Properties

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