Wire electrical discharge machining of AA7075/SiC/Al2O3 hybrid composite fabricated by inert gas-assisted electromagnetic stir-casting process

Lal, Shyam; Kumar, Sudhir; Khan, Zahid A.; Siddiquee, Arshad Noor

doi:10.1007/s40430-013-0087-x

Cited by 34 publications

(17 citation statements)

References 10 publications

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“…Hybrid aluminum metal matrix composites have attractive features like light weight, low density, superior strength, corrosion resistance and high thermal stability. Especially, the particles reinforcement results in improved high strength, high modulus, and enhanced tribological behavior when compared to their conventional aluminum alloys [6][7][8]. Addition of ceramic particles reinforcement in metal matrix improves strength and stiffness while ductility is compromised [9].…”

Section: Introductionmentioning

confidence: 99%

Parametric optimization for improving impact strength of squeeze cast of hybrid metal matrix (LM24–SiCp–coconut shell ash) composite

Arulraj¹,

Palani²

2017

J Braz. Soc. Mech. Sci. Eng.

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This paper mainly focuses on parametric optimization of squeeze cast hybrid (LM24-SiC p-coconut shell ash) composite through Taguchi method and genetic algorithm. The composite samples have been cast through squeeze casting for each experimental trial based on L 9 (3) 4 orthogonal array. From analysis of variance, it has been found that reinforcement and squeeze pressure were the casting parameters making significant improvement in the impact strength. A mathematical model representing the process was developed using nonlinear regression analysis. The optimum casting conditions were obtained through Taguchi method and genetic algorithm and checked through the confirmation experiments. In this study, it was confirmed that the castings obtained for the optimum squeeze casting conditions exhibited nearly 20% improvement in impact strength compared to the gravity die casting condition.

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Section: Introductionmentioning

confidence: 99%

Parametric optimization for improving impact strength of squeeze cast of hybrid metal matrix (LM24–SiCp–coconut shell ash) composite

Arulraj¹,

Palani²

2017

J Braz. Soc. Mech. Sci. Eng.

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“…An overview of various manufacturing and machining processes is crucial before choosing a suitable machining method for new composite materials, which has been elaborately reported by Yang et al (2009). Harder to machine materials were machined by the non-traditional machining process and for complex shapes, researchers had chosen wire-cut electrical discharge machining (WEDM) process (Lal et al, 2014;Prakash et al, 2013;Zhang et al, 2013;Kung and Chiang, 2008;Rozenek et al, 2001;Amini et al, 2011) and optimisation of machining parameters are also carried out during machining aluminium MMCs (Rao and Krishna, 2014;Garg et al, 2014a;Ramesh and Natarajan, 2013;Liao et al, 2014).…”

Section: Literature Review and Problem Identificationsmentioning

confidence: 99%

A study on machinability evaluation of Al-Gr-B<SUB align="right">4C MMC using response surface methodology-based desirability analysis and artificial neural network technique

Ponnuvel¹,

Senthilkumar²

2019

IJRAPIDM

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In this work, machinability behaviour of aluminium-graphite-boron carbide metal matrix composite is performed during wire-cut electrical discharge machining (WEDM) process. Experiments were designed using central composite-face centred design of response surface methodology (RSM) and with the application of desirability function multiple quality characteristics viz., kerf width, surface roughness and material removal rate (MRR) were optimised simultaneously. Input parameters gap voltage, pulse ON-time, pulse OFF-time and % reinforcement of boron carbide particles in the aluminium matrix are considered. The optimised machining condition obtained is a gap voltage of 150 V, pulse ON-time of 124.56 ms, pulse OFF-time of 48.03 ms and 2.5% reinforcement of boron carbide. From the experimental values, it is observed that better output responses are achieved with lower reinforcement of boron carbide. Second order regression models are developed individually for the output responses. An artificial neural network model is developed to predict the output responses, results obtained show that a better prediction can be achieved through artificial intelligent technique.

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“…compatibility with both hard and soft reinforcement materials) parts. 5,6 However, the cost of aluminum metal matrix composites (AMCs) is comparatively high as the reinforcements are slightly expensive than the conventional alloys. Several attempts have been carried out to reduce the cost of AMC; one method is of reinforcing the easily available inexpensive materials such as rice husk ash (RHA), bamboo leaf ash, groundnut shell ash (GSA), coconut shell ash etc.…”

Section: Introductionmentioning

confidence: 99%

Optimization of squeeze casting parameters of hybrid aluminium matrix composite using Taguchi approach

Arulraj¹,

Palani²,

Sowrirajan³

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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Squeeze casting is one of the simplest processes of manufacturing of composite materials and it attains higher advantages of low material processing cost, easy handling of material, size, design and good stability of matrix structure. LM24 aluminium alloy reinforced with silicon carbide (SiC) and coconut shell ash (CSA) were used to prepare the composite. LM24 alloy had wide engineering applications, wherein the addition of SiC enhances the wear resistance and CSA particles offer significant technical and economic benefits. In the present study, the composite samples were prepared based on Taguchi experimental conditions L16 (4-levels and 5- parameters) through squeeze casting method. From the experimental results, percentage of reinforcement and squeeze pressure were most influential parameters on impact strength. The optimum casting condition was obtained by using Taguchi optimization. From microstructural study, applying high level of squeeze pressure improved the uniform dispersion, good bonding between the matrix and reinforcement. Also, 25% of impact strength was improved the composite using Taguchi optimum conditions compared than conventional alloys. Higher squeeze pressure seen to have refined dendritic structure with uniform distribution of reinforcement materials in the aluminium matrix.

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Wire electrical discharge machining of AA7075/SiC/Al2O3 hybrid composite fabricated by inert gas-assisted electromagnetic stir-casting process

Cited by 34 publications

References 10 publications

Parametric optimization for improving impact strength of squeeze cast of hybrid metal matrix (LM24–SiCp–coconut shell ash) composite

Parametric optimization for improving impact strength of squeeze cast of hybrid metal matrix (LM24–SiCp–coconut shell ash) composite

A study on machinability evaluation of Al-Gr-B<SUB align="right">4C MMC using response surface methodology-based desirability analysis and artificial neural network technique

Optimization of squeeze casting parameters of hybrid aluminium matrix composite using Taguchi approach

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