Tribological characteristics of A356 Al alloy–SiCP composite discs

Shivamurthy, R. C.; Surappa, M.K.

doi:10.1016/j.wear.2011.01.075

Cited by 30 publications

(8 citation statements)

References 12 publications

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“…Wear rate of A356-SiC p decreases with increase in SiC p on Pin on Disc experiment at load 192N, sliding speed 1 to 5m/s and sliding distance 15 Km [7]. The eutectic alloys shows the lower wear rate compared with all the alloys in Al-Si alloy system and the wear is mild when applied load is less than 35N and sliding speed 5.8m/s in Pin on Disc experiment [8].…”

Section: Original Articlementioning

confidence: 90%

Experimental Investigation of Wear Behaviour of A356-TiB2 Metal Matrix Composites

Krishnan¹,

Tjprc²

2019

IJMPERD

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Aluminium-Silicon (Al-Si) alloys have attractive physical and mechanical properties. They are light weight (app. 3x lighter than gray cast iron and steel), low cost of production (with sand casting technology), easy to machine and have satisfactory mechanical properties with good recycling possibilities (up to 95 %). Nevertheless, one of the major drawbacks of these alloys is their low wear resistance. In order to improve its wear characteristic many Particle reinforced Aluminium Matrix Composites (PAMCs) were developed using SiC, TiC, B 4 C, TiB 2, Gr, MoS 2, and fly ash as reinforcement particles by different methods (Stir casting, Compo casting, Powder Metallurgy, in-situ method using salts and spray deposition) and their wear characteristics were also studied But there is no research work done on wear characteristics of semisolid processed PAMCs. So a MMC of aluminium A356 reinforced with 5%TiB 2 was developed by semi solid process and its dry sliding wear characteristic were studied using pin on disc machine with disc material of EN31 steel (55-60 HRC) under the condition at sliding velocity varies from 1m/s to 3m/s and applied load varies from 10N to 30N at constant sliding distance 3000m. A comparative study was done between A356 alloy, A356-5%TiB 2 in-situcomposite and Semisolid processed alloy, composite it was found that semisolid processed alloy and composite shows more wear than commercial alloy and in-situ composite.

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Section: Original Articlementioning

confidence: 90%

Experimental Investigation of Wear Behaviour of A356-TiB2 Metal Matrix Composites

Krishnan¹,

Tjprc²

2019

IJMPERD

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“…Nano reinforcements improve interaction at the interface because of large surface to volume ratio and leads to enhancement in the material properties of these metal matrix nano composites. SiC has low density and is the most widely used ceramic reinforcements for aluminum based composites because of their greater hardness, thermal and chemical stabilities (Shivamurthy and Surappa, 2011). B 4 C used as a ceramic reinforcement, had an improved interfacial bonding with aluminum than that of Al 2 O 3 and SiC which leads to providing high-wear resistance (Lashgari et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Fabrication and tribological study of AA6061 hybrid metal matrix composites reinforced with SiC/B₄C nanoparticles

Das

Chandrasekaran

Samanta

et al. 2019

ILT

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Purpose Composite materials are replacing the traditional materials because of their remarkable properties and the addition of nanoparticles making a new trend in material world. The nano addition effect on tribological properties is essential to be used in automotive and industrial applications. The current work investigates the sliding wear behavior of an aluminum alloy (AA) 6061-based hybrid metal matrix composites (HMMCs) reinforced with SiC and B4C ceramic nanoparticles. Design/methodology/approach The hybrid composites are fabricated using stir casting process. Two different compositions were fabricated by varying the weight percentage of the ceramic reinforcements. An attempt has been made to study the wear and friction behavior of the composites using pin-on-disc tribometer to consider the effects of sliding speed, sliding distance and the normal load applied. Findings The tribological tests are carried out and the performances were compared. Increase in sliding speed to 500 rpm resulted in the rise of temperature of the contacting tribo-surface which intensified the wear rate at 30N load for the HMMC. The presence of the ceramic particles further reduced the contact region of the mating surface thus reducing the coefficient of friction at higher sliding speeds. Oxidation, adhesion, and abrasion were identified to be the main wear mechanisms which were further confirmed using energy dispersive spectroscopy and field emission scanning electron microscopy (FESEM) of the worn out samples. Practical implications The enhancement of wear properties is achieved because of the addition of the SiC and B4C ceramic nanoparticles, in which these composites can be applied to automobile, aerospace and industrial products where the mating parts with less weight is required. Originality/value The influence of nanoparticles on the tribological performance is studied in detail comprising of two different ceramic particles which is almost new research. The sliding effect of hybrid composites with nano materials paves the way for using these materials in engineering and domestic applications.

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“…1 Most of the tribological studies were carried out using pin-on-disc (rotating) wear tester and ball-onring tribometer. [9][10][11][12][13][14][15][16] The concept of FGM can be effectively used in automobile components such as engine blocks, cylinder liners, piston rings, etc. in which these parts are subjected to wear under reciprocating condition rather than rotary condition.…”

Section: Introductionmentioning

confidence: 99%

Enhancement in tribological behaviour of functionally graded SiC reinforced aluminium composites by centrifugal casting

Karun

Rajan

Pillai

et al. 2015

Journal of Composite Materials

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Enhanced tribological and location-specific properties achieved in functionally graded metallic composites make them potential materials for futuristic engineering components. The present investigation aims on the processing of homogenous and functionally graded Al matrix composites reinforced with SiC particles of 23 µm average particle size by gravity and centrifugal casting techniques. The sizes of the primary aluminium and eutectic silicon phases are finer towards the outer periphery due to the higher solidification rate. Functionally graded Al–SiCp composite rings produced by centrifugal casting show higher concentration of SiCp towards outer periphery, followed by a gradient transition region and the particle depleted zone. Particle agglomerates formed due to partially wetted particles associated with voids and gas porosities segregate towards the inner periphery. The higher concentration of reinforcement particles near the outer periphery in FGM enhances the hardness and wear resistance in rotary and reciprocating wear studies. Centrifugal cast alloys show enhanced wear resistance than the gravity cast specimen due to fine grains of primary aluminium and eutectic silicon. The rotary and reciprocating wear test shows the adhesive and abrasive type wear mechanisms.

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Tribological characteristics of A356 Al alloy–SiCP composite discs

Cited by 30 publications

References 12 publications

Experimental Investigation of Wear Behaviour of A356-TiB2 Metal Matrix Composites

Experimental Investigation of Wear Behaviour of A356-TiB2 Metal Matrix Composites

Fabrication and tribological study of AA6061 hybrid metal matrix composites reinforced with SiC/B₄C nanoparticles

Enhancement in tribological behaviour of functionally graded SiC reinforced aluminium composites by centrifugal casting

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Tribological characteristics of A356 Al alloy–SiCP composite discs

Cited by 30 publications

References 12 publications

Experimental Investigation of Wear Behaviour of A356-TiB2 Metal Matrix Composites

Experimental Investigation of Wear Behaviour of A356-TiB2 Metal Matrix Composites

Fabrication and tribological study of AA6061 hybrid metal matrix composites reinforced with SiC/B4C nanoparticles

Enhancement in tribological behaviour of functionally graded SiC reinforced aluminium composites by centrifugal casting

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Fabrication and tribological study of AA6061 hybrid metal matrix composites reinforced with SiC/B₄C nanoparticles