Electrical Discharge Machining of Al(6351)–SiC–B<sub>4</sub>C Hybrid Composite

Kumar, S. Suresh; Uthayakumar, M.; Kumaran, S. Thirumalai; Parameswaran, P.

doi:10.1080/10426914.2014.952024

Cited by 68 publications

(35 citation statements)

References 16 publications

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“…During electro discharge machining of MMCs, the recast layer, surface waviness and blisters can be generated on machined surface, which are contributed by the ceramic particles removed by thermal spalling because of the plasma collapse at the time of pulse off [11]. Moreover, the surface finish is found to be relatively poor and the microstructure and mechanical properties are changed due to the high heat generated during the laser machining [12].…”

Section: State-of-the-art Shaping Processes For Mmcs and Tool Wear Ismentioning

confidence: 99%

Micro-machinability of nanoparticle-reinforced Mg-based MMCs: an experimental investigation

Teng

Huo

Wong

et al. 2016

Int J Adv Manuf Technol

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As a composite material with combination of low weight and high engineering strength, metal matrix composites (MMCs) have been utilised in numerous applications such as aerospace, automobile, and bioengineering. However, MMCs are recognised as difficult-to-cut materials due to their improved strength and high hardness of the reinforcing particles. This paper presents an experimental investigation on micro-machinability of Mg-based MMCs reinforced with Ti and TiB 2 nano-sized particles. The tool wear of AlTiN-coated micro-end mills was investigated. Both abrasive and chip adhesion effect were observed on the main cutting edges, whilst the reinforcement materials and volume fraction play an important role in determining the wear type and severity. The influence of cutting parameters on the surface morphology and cutting force was studied. According to analysis of variance (ANOVA), depth of cut and spindle speed have significant effect on the surface roughness. The specific cutting energy, surface morphology and the minimum chip thickness was obtained and characterised with the aim of examining the size effect. Furthermore, higher cutting force and worse machined surface quality were obtained at the small feed per tooth ranging from 0.15 to 0.5 μm/tooth indicating a strong size effect. Overall, Mg/TiB 2 MMCs exhibit better machinability.

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Section: State-of-the-art Shaping Processes For Mmcs and Tool Wear Ismentioning

confidence: 99%

Micro-machinability of nanoparticle-reinforced Mg-based MMCs: an experimental investigation

Teng

Huo

Wong

et al. 2016

Int J Adv Manuf Technol

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“…Thermal spalling removes ceramic particles and the surfaces of MMC generated from EDM have the recast layer, surface waviness and blisters because of the plasma collapse at the time of pulse off [33]. The surface of SiCp reinforced Al6061 MMC after machining by WEDM is full of micro-pores, shallow holes, micro-fissures, and drops of debris [42].…”

Section: Resultsmentioning

confidence: 99%

“…Seo, Kim et al [21] also noted higher wear when volume percentage is lower which is contradictory to the results obtain by other researcher [26]. Saha et al [27] [30], Manna and Bhattacharyya [31], Sivaprakasm et al [32], Kumar et al, [33] Yue et al, [34], etc. where the range of parameters and MMCs were different.…”

Section: Introductionmentioning

confidence: 83%

Electrical Discharge Machining of MMCs Reinforced with Very Small Particles

Pramanik

2015

Materials and Manufacturing Processes

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This paper investigates material removal rate (MRR), kerf width, surface finish and electrode wire wear for different pule-on-times as well as wire tensions during EDM of 6061 aluminium alloy reinforced with 10 vol% 700 nm SiCp MMC. Effects of pulse-ontime on output variables at lower and higher wire tensions were investigated. Similarly, effects of the wire tensions on output variables at shorter and longer pulse-on-times were also investigated. Longer pule-on-time increases the MRR though the higher wire tension reduces the MMR. The effect of wire tension on MRR is much more significant at longer pule-on-time compare to that at shorter pule-on-time. There is an optimum pule-on-time for which best surface finish is achieved. The surface finish deteriorates when the pulseon-time is higher or lower than the optimum pule-on-time. With the rise of tension in wire, the surface roughness increases and decreases at shorter and longer pule-on-times respectively. The machined surface contains solidified molten material, splash of materials and blisters. Generation of the tapered slot with higher kerf width at the top indicates the wear of wire electrode. Significant variation of the electrode wire diameter was due to coating of the matrix, wear and clogging of small reinforced particles in the electrode gap.

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“…forms recently, because of their improved mechanical behavior (Suresh Kumar et al 2014). They are prepared by various routes among which the stir casting method is increasingly well known because of its easier preparation and low cost process.…”

Section: Aluminum Based Metal Matrix Composite (Mmc) Is Used In Divermentioning

confidence: 99%

Machining behavior of AA6351–SiC–B₄C hybrid composites fabricated by stir casting method

Kumaran

Uthayakumar

Słota

et al. 2015

Particulate Science and Technology

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This study presents an effective approach to assess the machinability of 6351 aluminum alloy matrix, reinforced with 5 wt. % Silicon Carbide (SiC) and (0, 5 and 10 wt. %) Boron Carbide Downloaded by [University of Nebraska, Lincoln] at 05:28 01 October 2015 2 (B4C) particles. The turning tests are carried out with a Polycrystalline Diamond (PCD) tool to identify the effect of the B4C particles addition to the composite, with an objective to improve the Material Removal Rate (MRR) and to reduce the Surface Roughness (Ra) and PowerConsumption (P). The significant level of each factor, which contributes to affect the output response, is found through Analysis of Variance (ANOVA). The results show that the inclusion of B4C particles in the hybrid composite significantly affects the machinability, with a contribution to the Surface Roughness by 7.87% and P by 6.36%. The increase in MRR affects the quality of the material, irrespective of the composites.

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Electrical Discharge Machining of Al(6351)–SiC–B₄C Hybrid Composite

Cited by 68 publications

References 16 publications

Micro-machinability of nanoparticle-reinforced Mg-based MMCs: an experimental investigation

Micro-machinability of nanoparticle-reinforced Mg-based MMCs: an experimental investigation

Electrical Discharge Machining of MMCs Reinforced with Very Small Particles

Machining behavior of AA6351–SiC–B₄C hybrid composites fabricated by stir casting method

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Electrical Discharge Machining of Al(6351)–SiC–B4C Hybrid Composite

Cited by 68 publications

References 16 publications

Micro-machinability of nanoparticle-reinforced Mg-based MMCs: an experimental investigation

Micro-machinability of nanoparticle-reinforced Mg-based MMCs: an experimental investigation

Electrical Discharge Machining of MMCs Reinforced with Very Small Particles

Machining behavior of AA6351–SiC–B4C hybrid composites fabricated by stir casting method

Contact Info

Product

Resources

About

Electrical Discharge Machining of Al(6351)–SiC–B₄C Hybrid Composite

Machining behavior of AA6351–SiC–B₄C hybrid composites fabricated by stir casting method