Tribological Behaviour of Aluminium/Alumina/Graphite Hybrid Metal Matrix Composite Using Taguchi’s Techniques

Radhika, N.; Subramanian, Ramanathan; Prasat, S. Venkat

doi:10.4236/jmmce.2011.105032

Cited by 107 publications

(77 citation statements)

References 22 publications

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“…Vijaya Ramnath et al [18,19,20] studied the compression and chemical Properties of Aluminium Nano Composite and also reviewed aluminium metal matrix composites. Radhika et al [21] stated that the incorporation of Graphite as primary reinforcement, which forms the protective layer between the pin and the counter face, increases wear resistance. Manoj Singla et al [22] found that a sample which contains 25% SiC gives the best value in Hardness and Toughness, i.e., Hardness 45.5 BHN and Impact Strength 36 N-m.…”

Section: Introductionmentioning

confidence: 99%

Studies on Mechanical Behaviour of Aluminium-Silicon Carbide-Copper Metal Matrix Composite

Shreyas¹,

Shriramkumar²,

Sruthisagar³

et al. 2018

MATEC Web of Conferences

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Abstract. Metal matrix composites (MMC) are the combination of two or more dissimilar base metals which in turn gives new metal. Composites have better properties than their base material. Nowadays, composites play the major role in manufacturing industries especially in automotive industry. This paper reveals the reinforcement of Aluminium alloy (6061) with Silicon Carbide and Copper in different ratios to produce new composite using stir casting technique in normal atmospheric temperature. In this work, mechanical behavior of the composite namely tensile strength, hardness and Flexural strength were evaluated. It was observed that sample 2 shows highest tensile strength of 155 MPa with hardness 73. The result shows that the hybrid composite had better mechanical property. IntroductionNowadays composite materials are replacing conventional materials due to their high strength to weight ratio, bio degradable nature, wear and corrosion resistance. Mohan Kumar et al [1] found the Ultimate tensile strength of Al-4.5 wt% Cu-2 wt % Fly ash -3 wt%. SiC composites to be higher than the Base Matrix composite of Al -4.5wt%of Copper alloy. They stated that this material exhibits high strength to weight ratio and good fatigue resistance. Anilkumar et al [2] stated that the bonding between the matrix material and Fly ash is good and he also observed that there is no gap between the Particle and matrix Material. Itskos et al [3] discovered that by adding the Fly Ash to the MMC, it enhances the tribo-performances of the composites. Shivaprakash et al [4] found that the heat treated Fly ash composite has comparatively better characteristics to non heat treated composites, especially the wear performance is better for water quenched specimen than air cooled specimen and non-heat treated specimens. Arun Kumar et al [5] stated that the alumina coated stirrer blades will prevent the migration of ferrous ions from stirrer to the molten metal. They also found that the e-glass and Fly ash composites with aluminium (Al 6061) increase the tensile strength by 60-70%. Vivekananthan et al [6] stated that by adding the Fly ash and Mg in aluminum results in increased hardness from 58BHN to 86 BHN. Mahendra et al [7] found that the fluidity and density of the composites decreases while tensile strength, impact strength, compression strength and dry sliding wear resistantance increase due to increase in percentage of Flyash. Surendra Kumar Patel et al [8] discovered that both the reinforcements 50% SiC and 50% of Zircon sand on aluminium ADC-12 alloy give better compressive strength compared to others. Ramanpreet Singh and Rahul Singla [9] stated that by increasing the weight fraction of Silicon Carbide, the wear rate gets reduced linearly. Ashok Atulker et al [10] found that the wear rate remains constant more or less in the pressure range of 0.5N/mm 2 to 0.6N/mm 2 , but the wear rate increases steadily up to the normal pressure of 0.5N/mm 2 , and increases rapidly that due to adhesive wear. Vinod Kumar et al [11] stated that the wear rate o...

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Section: Introductionmentioning

confidence: 99%

Studies on Mechanical Behaviour of Aluminium-Silicon Carbide-Copper Metal Matrix Composite

Shreyas¹,

Shriramkumar²,

Sruthisagar³

et al. 2018

MATEC Web of Conferences

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“…"Radhika et al [11] found taguchi technique as a valuable technique to deal with responses influenced by multi variables. It is formulated for process optimization and detection of optimal combination of the parameters for a given response.…”

Section: Iintroductionmentioning

confidence: 99%

“…Normally, the external lubricant plays a vital role in wear behavior. The addition of naturallubricant like graphite enhances the selflubricating capacity of the composites, though the wear behavior of Al/SiCp is good, which is essential in some of the applications where lubrication needs to be applied periodically, especially for wear parts which are difficult to access.Metal matrix composite is fabricated by the Stir casting technique, because it is economical and good adhesion takes place between the matrix and reinforcement."Radhika et al [11] found taguchi technique as a valuable technique to deal with responses influenced by multi variables. It is formulated for process optimization and detection of optimal combination of the parameters for a given response.…”

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Wear Optimization of Al/Sic/Gr Hybrid MMC Using Taguchi and ANOVA

PratheepReddy¹,

Rao²

2014

IJIRSET

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ABSTRACT:In this paper, study is on preparing hybrid metal matrix composites of Al 6061 alloy as base material by incorporating 6% SiC and varying 2 to 4 % of graphite particulates varying insteps of 2 by vortex method. The dry sliding wear test is performed using pin on disc wear test apparatus as per ASTM standards G -99 to study the wear and frictional properties of hybrid metal matrix composite. Taguchi's technique is implemented for designing of experiments. The analysis is performed using a L9 Orthogonal array, and Investigation to find the effect of applied load, sliding speed and track diameter on wear rate, during wear process was carried out using ANOVA technique. The wear rate was analysed using taguchi and the optimal parameters for minimizing the wear rate was determined. KEYWORDS:Hybrid MMC, Stir casting, Wear analysis, Taguchi optimization. I.INTRODUCTIONConventional materials has certain shortcomings in good combination of Strength, stiffness, toughness and density. In order to overcome these shortcomings and to meet the demand of modern day technology, composites are most important materials, Out of which Hybrid Metal Matrix Composites (HMMCs) possess high specific strength, toughness, impact strength and low sensitivity to temperature changes [1][2][3]. As a result, many of the current applications for HMMCs are widely used in the field of aerospace and automobile components, Aluminium based MMCS are still the subjects of research studies, because of their low density makes more advantageous in many applications. Among the various useful aluminium alloys, aluminium alloy Al 6061 is typically characterized by properties such as fluidity, castability, corrosion resistance and high strength-weight ratio. Due to its high wear loss nature it will not be applicable for many tribological applications. AMCs can be reinforced with SiC, Al2O3, B4C, TiC, TiB2, MgO, TiO2 and BN. To avoid this limitations, Al alloySiC particulate composites are being spread for the mechanical and the tribological applications. Therefore, the investigation of tribological and mechanical behavior of aluminum based materials is becoming increasinglyimportant. Addition of a hard ceramic phase to a relatively soft matrix alloy, commonly aluminium, improves the strength, creep performance, and wear resistance of the alloy [4,5].Number of studies have been done on the Al/SiCp [6][7][8] and Al/Graphite [9, 10] individually. Normally, the external lubricant plays a vital role in wear behavior. The addition of naturallubricant like graphite enhances the selflubricating capacity of the composites, though the wear behavior of Al/SiCp is good, which is essential in some of the applications where lubrication needs to be applied periodically, especially for wear parts which are difficult to access.Metal matrix composite is fabricated by the Stir casting technique, because it is economical and good adhesion takes place between the matrix and reinforcement."Radhika et al. [11] found taguchi technique as a valuable technique to deal with res...

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“…The wear rate and coefficient of friction decrease with increasing volume fraction of reinforcements [6].N. Radhika, R. Subramanian, S. Venkat Prasat Investigation to find the influence of applied load, sliding speed and sliding distance on wear rate, as well as the coefficient of friction during wearing process was carried out using ANOVA and regression equations for each response were developed [7]. Objective of the model was chosen as "smaller the better" characteristics to analyse the dry sliding wear resistance [7].…”

Section: Introductionmentioning

confidence: 99%