Wear Characteristics in Al-SiC Particulate Composites and the Al-Si Piston Alloy

Hasan, Zahir; Pandey, R.K.; Sehgal, D. K.

doi:10.4236/jmmce.2011.1014104

Cited by 14 publications

(9 citation statements)

References 8 publications

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“…The wear rates of material fabricated by vortex method decrease less rapidly than the materials prepared by dilution material with increase in SiC volume fraction and applied load. Similar studies on wear behaviour of Al-SiC composite have also been reported by other researchers [22,23].…”

Section: Introductionsupporting

confidence: 89%

“…For example, the interaction V × L occupies columns 3 and 4, and for trial no 1, the cell fields show 1 in column 3 and 1 in column 4. Thus V × L has the value 11 which means it is the combination of level 1 of V and level 1 of L. Similarly there are 9 such combinations(11,22, 33,12,21,23, 32,13, and 31) for V × L interaction in columns 3 and 4. A similar procedure applies to other interaction terms as well.…”

mentioning

confidence: 99%

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Wear Behaviour of Al-SiCp Metal Matrix Composites and Optimization Using Taguchi Method and Grey Relational Analysis

Ghosh¹,

Sahoo²,

Sutradhar³

2012

JMMCE

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Aluminium metal matrix composite is a relatively new material that has proved its position in automobile, aerospace and other engineering design applications due to its wear resistance and substantial hardness. Need for improved tribological performance has led to the design and selection of newer variants of the composite. The present investigation deals with the study of wear behaviour of Al-SiCp metal matrix composite for varying reinforcement content, applied load, sliding speed and time. Aluminium metal matrix composites reinforced with SiC particles are prepared by liquid metallurgy route using LM6 aluminium alloy and silicon carbide particles (size ~ 37 µm) by varying the weight fraction of SiC in the range of 5% -10%. The material is synthesized by stir casting process in an electric melting furnace. The materials are then subjected to wear testing in a multitribotester using block on roller configuration. A plan of experiments based on L27 Taguchi orthogonal array is used to acquire the wear data in a controlled way. An analysis of variance is employed to investigate the influence of four controlling parameters, viz., SiC content, normal load, sliding speed and sliding time on dry sliding wear of the composites. It is observed that SiC content, sliding speed and normal load significantly affect the dry sliding wear. The optimal combination of the four controlling parameters is also obtained for minimum wear. The microstructure study of worn surfaces indicates nature of wear to be mostly abrasive.

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Section: Introductionsupporting

confidence: 89%

mentioning

confidence: 99%

Wear Behaviour of Al-SiCp Metal Matrix Composites and Optimization Using Taguchi Method and Grey Relational Analysis

Ghosh¹,

Sahoo²,

Sutradhar³

2012

JMMCE

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“…[18][19][20]27,33,34,[69][70][71][72][73][74][75][76][77][78][79][80]. In the case of composites, additional factors controlling the wear behaviour are morphology, mode of distribution and content of dispersoid phase and the nature of dispersoid/matrix bonding [2,6,19,20,22,27,28,34,39,45,70,71,76,79,[81][82][83][84][85][86][87][88][89][90]. Experimental parameters include applied load, traversal distance, speed etc.…”

Section: Bk Prasad Et Al Two-body Abrasive Wear Behaviour Of In-simentioning

confidence: 99%

Two-Body Abrasive Wear Behaviour of In-Situ Al-TiC Particle Composites: Influence of TiC Reinforcement and Content in the Alloy Matrix and Experimental Parameters

et al. 2019

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This study pertains to observations made on the abrasive wear response of Al-TiC composites under varying applied load and traversal distance conditions. The influence of TiC particle reinforcement and its content in the matrix on the abrasion characteristics of the samples was investigated. The composites were prepared by generating the reinforcement phase (TiC particles) from within the matrix employing a hybrid in-situ technique consisting of a combination of steps involved in powder and liquid metallurgy routes of synthesizing metal matrix composites. The unreinforced matrix alloy (AA2014) was also tested under identical experimental conditions for comparison purposes. Properties characterized were wear rate, frictional heating and friction coefficient. Microstructural features of the samples and characteristics of wear surfaces, subsurface regions and abrasive medium have also been examined. The TiC reinforcement led to improved abrasion resistance (inverse of wear rate), the degree of improvement increasing further with the rising concentration of the TiC particles in the alloy matrix. Increasing applied load led to deterioration in the wear behaviour of the samples while a reverse trend was followed as the traversal distance was raised. The severity of frictional heating was noted to increase with load. On the contrary, friction coefficient tended to decrease with increasing load except for the composite containing the highest concentration of TiC wherein a reverse trend was noticed. Both frictional heating and friction coefficient increased sharply with traversal distance initially. This was followed by a reduction in the rate of temperature increase at longer traversal distances whereas friction coefficient was observed to attain steady state condition after showing a decrease in some cases. The presence of TiC reinforcement in the alloy matrix and its increasing content led to a decrease in the friction coefficient and the severity of frictional heating. The observed wear behaviour has been substantiated through the characteristics of abraded surfaces and subsurface regions of the samples and degradation of the abrasive medium. Operating material removal mechanisms have also been examined.

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“…This was due to the presence of hard SiC and B4C nanoparticulates which restricted the flow of material under the applied load. In addition, the worn surface of the nanocomposites has higher hardness and hence the ploughing tendency of the hard asperity of the counter face was less compared to the soft matrix alloy [12,33,34]. …”

Section: Friction Coefficient Vs Normal Loadmentioning

confidence: 99%

Abrasive wear behaviour of aluminium hybrid nanocomposites produced by ultrasonication assisted casting method

Lakshmanan¹

2017

Int. J. Automot. Mech. Eng.

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In this investigation, the abrasive wear resistance of Al/ (B4C+SiC) hybrid nanocomposites was tested against hard SiC abrasive sheets and compared to those of unreinforced Al alloy. Three loadings of nano-SiC (0.5, 1.0, and 1.5 Wt. %) and one loading of nano-B4C (0.5 Wt. %) were mixed with an aluminium alloy to produce the aluminium hybrid nanocomposites using an ultrasonication assisted casting method. Scanning electron microscopy showed a uniform distribution of nanoparticles in the Al alloy. Transmission electron microscopy indicated an increase in the dislocation density of nanocomposites compared to monolithic Al. The abrasive wear experiments were conducted on a Pin-on-Disc tribometer using pins of 9 mm diameter and 15 mm height under dry sliding conditions at room temperature. The wear rate in terms of wear volume per unit weight was calculated for both unreinforced alloy and hybrid nanocomposites. It was observed that Al hybrid nanocomposites showed superior wear resistance properties compared to the unreinforced sample. The nanocomposite with 1.5 Wt.% nano-SiC and 0.5 Wt.% nano-B4C possessed better wear resistance properties compared to the other composites tested in this work. The worn out surface of the Al alloy and its hybrid nanocomposites imply that the wear mechanism is through plowing action on the surface by SiC abrading particulates. The nanocomposite with 1.5 Wt.% SiC and 0.5 Wt.% B4C showed 88.32 % increase in wear resistance compared to the monolithic Al. This combination of material can be selected for abrasive wear resistance applications.

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Wear Characteristics in Al-SiC Particulate Composites and the Al-Si Piston Alloy

Abstract: ABSTRACT:The

Cited by 14 publications

References 8 publications

Wear Behaviour of Al-SiCp Metal Matrix Composites and Optimization Using Taguchi Method and Grey Relational Analysis

Wear Behaviour of Al-SiCp Metal Matrix Composites and Optimization Using Taguchi Method and Grey Relational Analysis

Two-Body Abrasive Wear Behaviour of In-Situ Al-TiC Particle Composites: Influence of TiC Reinforcement and Content in the Alloy Matrix and Experimental Parameters

Abrasive wear behaviour of aluminium hybrid nanocomposites produced by ultrasonication assisted casting method

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