Tribological behavior of self-lubricating aluminium/SiC/graphite hybrid composites synthesized by the semi-solid powder-densification method

Guo, Mingsheng; Tsao, Chi Y.A.

doi:10.1016/s0266-3538(99)00106-2

Cited by 250 publications

(82 citation statements)

References 8 publications

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“…Graphite reinforcement in Al matrix decreases the hardness, friction coefficient and coefficient of thermal expansion [24] while wear resistance increases considerably in comparison to the un-reinforced Al alloy [17,23,25,26]. The graphite provides a solid layer of lubricant between the composite and counter hard surface [27].…”

Section: Introductionmentioning

confidence: 99%

Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Sharma

Sahoo

et al. 2018

J. Compos. Sci.

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Aluminium-based hybrid metal grid composites (MMC) are extensively utilized in automobile applications (engine cylinders, pistons, etc.) as they exhibit a fantastic blend of properties. Here, a detailed study of nano-mechanical, electrochemical and Raman spectroscopic behavior of friction stir processed Al6061-SiC-graphite hybrid surface composite is presented. The effect of various tool rotational speeds was evaluated along with the monitoring of variation in axial force. Microstructural changes with various tool rotational speeds are studied by using a scanning electron microscope. Raman spectroscopy and X-Ray diffraction studies are used for the spectroscopic characterization of the fabricated hybrid and mono surface composites. Residual stresses and various crystal structure disorders of reinforcement result in the significant change in intensity and a considerable shift in Raman peak positions. The nano-mechanical behavior of the fabricated composite with various reinforcements and tool rotational speeds are analyzed by using nano-indentation. The nano-mechanical behavior of hybrid composite fabricated with an optimum set of processing parameters is superior to mono composites fabricated with the same processing parameters. Also, the electrochemical behavior of the fabricated composites is studied by linear potentiodynamic polarization test. The Al6061-SiC-graphite hybrid surface composite reveals excellent nano-mechanical and electrochemical behavior when fabricated with an optimum set of processing parameters. The tool rotational speed has a pronounced effect on the dispersion of agglomerates and grain refinement of the matrix material. The processing parameters extensively affect the Raman spectroscopic behavior of the hybrid composite. The hybrid surface composite shows better corrosion resistance than the mono composites when fabricated with an optimum set of processing parameters. Reduced intergranular as well as interfacial corrosion pits in hybrid composites increased its resistance to corrosion.

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Section: Introductionmentioning

confidence: 99%

Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Sharma

Sahoo

et al. 2018

J. Compos. Sci.

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“…As the applied load and sliding speed increase, the wear mechanisms of the composites shift fro m a mild to a severe regime. Ted Guo et al (2000) investigated the tribological behavior of selflubricating alu min iu m/SiC/graphite hybrid composites. They found that hardness decreases with the amount of th e graphite addition fracture energy decreases monotonously with the addition of graphite.…”

Section: Tri Bological Propertiesmentioning

confidence: 99%

Studies on Mechanical and Tribological Properties of Aluminum Based Metal Matrix Composites – A Review

2015

IJAERD

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“…In Chapter 2, the compaction behavior of powders in the semi-solid state was analyzed, and the pressure- and composite materials including Al-SiC (Guo and Tsao 2000;Chen, Yang et al 2004;Wu 2009;Wu, Kim et al 2010a;Wu, Kim et al 2011) and Al-CNT. Wu et al also demonstrated the effectiveness of semi-solid powder flow in filling the micro-scale features for applications in micro/meso-manufacturing (Wu, Kim et al 2010b).…”

Section: Dissertation Organizationmentioning

confidence: 99%

“…Previous studies have demonstrated the potential of SPP in fabricating various metal composites, including Al-SiC (Guo and Tsao 2000), Al-Ti (Yasue 2000) and AlMg (Young and Clyne 1986a), and in tailoring the composition of composite materials effectively (Wu, Kim et al 2010b). …”

Section: Introductionmentioning

confidence: 99%

Fabrication of metal matrix composite by semi-solid powder processing

2011

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Tribological behavior of self-lubricating aluminium/SiC/graphite hybrid composites synthesized by the semi-solid powder-densification method

Cited by 250 publications

References 8 publications

Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Study of Nano-Mechanical, Electrochemical and Raman Spectroscopic Behavior of Al6061-SiC-Graphite Hybrid Surface Composite Fabricated through Friction Stir Processing

Studies on Mechanical and Tribological Properties of Aluminum Based Metal Matrix Composites – A Review

Fabrication of metal matrix composite by semi-solid powder processing

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