Evaluation of dry sliding wear behavior of silicon particles reinforced aluminum matrix composites

AlMg alloys close to ¢-Al 3 Mg 2 intermetallic phase were processed by neutral gas coverage melting process of pure elemental Al and Mg with the composition of Al40 mass% Mg. Mechanical milling was applied in order to convert the pre-alloyed ingots to nanocrystalline or amorphous alloy. X-ray diffraction and transmission electron microscopy (TEM) tests were carried out to investigate the formation of Al 3 Mg 2 single phase nanoparticle. Having prepared the single phase intermetallic, it was added to the pre-alloyed matrix powder of Al4.5 mass% Cu, in different contents. The effect of the reinforcing agent on the microhardness and wear behavior of the nanocopmosites were studied thoroughly with the aid of press-sinter methodology and quantitative data recorders via pin-on-disk wear test. The results of microhardness tests revealed that the hardness of nanocomposites is significantly improved with increasing reinforcement content with in the matrix. The coexisted wear mechanisms, mainly delamination and abrasive, of the consolidated nanocopmosites were investigated through scanning electron microscopy (SEM) and TEM observations.

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“…23) As seen in Fig. 6, adding ¢-Al 3 Mg 2 up to 10 mass% improves the sliding wear rate of the matrix alloy to some extent.…”

Section: Investigation Of Wear Behaviormentioning

confidence: 77%

Hardness and Wear Properties of Al–4.5%Cu/Al3Mg2 Nanocomposite Prepared by Mechanical Alloying

et al. 2012

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“…While fabricating SiCpreinforced Al 356 composites using the quick quench compocasting method, he reported that full incorporation of SiC particles into the aluminium matrix can be obtained by stirring the MMC slurry in the semi-solid state without any addition of wetting agent. Zhiqiang et al (2005) prepared SiC-reinforced Al-Si-Cu-Mg matrix composite by powder metallurgy technology, which involves compaction of powder in a cold compaction mould in a material testing machine, followed by sintering the billet in the tube furnace with electric resistance heating. Natarajan et al (2006) fabricated SiC-reinforced A 356 composite by liquid metallurgy route, in which the alloy was melted in an electric furnace and stirred by a motorized stirrer, as a result of which a vortex was created on the top surface.…”

Section: Fabrication Of Aluminium MMCmentioning

confidence: 99%

Fabrication and heat treatment of ceramic-reinforced aluminium matrix composites - a review

Das

Mishra

Singh

et al. 2014

Int J Mech Mater Eng

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Ceramic-reinforced aluminium matrix composites have attracted considerable attention in engineering applications as a result of their relatively low costs and characteristic isotropic properties. Reinforcement materials include carbides, nitrides and oxides. In an effort to achieve optimality in structure and properties of ceramic-reinforced metal matrix composites (MMCs), various fabrication and heat treatment techniques have evolved over the last 20 years. In this paper, the status of the research and development in fabrication and heat treatment techniques of ceramic-reinforced aluminium matrix composites is reviewed, with a major focus on material systems in terms of chemical compositions, weight or volume fraction, particle size of reinforcement, fabrication methods and heat treatment procedures. Various optical measurement techniques used by the researchers are highlighted. Also, limitations and needs of the technique in composite fabrication are presented in the literature. The full potential of various methods for fabricating ceramic-reinforced aluminium matrix composites is yet to be explored.

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“…Fig. 8.25 The effect of normal load on friction coefficient [13,14,71,[101][102][103][104] Several studies have shown that an increase in sliding speed leads to an increase in wear rate, especially at higher sliding speed ranges. For instance, Al-Fe and Al-SiC composite illustrate an initial decrease in the wear rate at lower sliding speeds; however, these composites showed a sharp increase in the wear rate at higher sliding speeds (see Fig.…”

Section: Sliding Speedmentioning

confidence: 99%

Tribology of Metal Matrix Composites

Rohatgi

Tabandeh-Khorshid

Omrani

et al. 2013

Tribology for Scientists and Engineers

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Metal matrix composites (MMCs) are an important class of engineering materials that are increasingly replacing a number of conventional materials in the automotive, aerospace, marine, and sports industries due to their lightweight and superior mechanical properties. In MMCs, nonmetallic materials are embedded into the metals or the alloys as reinforcements to obtain a novel material with attractive engineering properties, such as improved ultimate tensile strength, ductility, toughness, and tribological behavior. In this chapter, an attempt has been made to summarize the tribological performance of various MMCs as a function of several relevant parameters. These parameters include material parameters (size, shape, volume fraction, and type of the reinforcements), mechanical parameters (normal load and sliding speed), and physical parameters (temperature and the environment). In general, it was shown that the wear resistance and friction coefficient of MMCs are improved by increasing the volume fraction of the reinforcements. As the normal load and sliding speed increase, the wear rate of the composites increases and the friction coefficient of the composites decreases. The wear rate and friction coefficient decrease with increasing temperature up to a critical temperature, and thereafter both wear rate and friction coefficient increase with increasing temperature. The nano-composites showed best friction and wear performance when compared to micro-composites.

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Evaluation of dry sliding wear behavior of silicon particles reinforced aluminum matrix composites

Cited by 89 publications

References 12 publications

Hardness and Wear Properties of Al–4.5%Cu/Al<sub>3</sub>Mg<sub>2</sub> Nanocomposite Prepared by Mechanical Alloying

Hardness and Wear Properties of Al–4.5%Cu/Al<sub>3</sub>Mg<sub>2</sub> Nanocomposite Prepared by Mechanical Alloying

Fabrication and heat treatment of ceramic-reinforced aluminium matrix composites - a review

Tribology of Metal Matrix Composites

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Evaluation of dry sliding wear behavior of silicon particles reinforced aluminum matrix composites

Cited by 89 publications

References 12 publications

Hardness and Wear Properties of Al&ndash;4.5%Cu/Al<sub>3</sub>Mg<sub>2</sub> Nanocomposite Prepared by Mechanical Alloying

Hardness and Wear Properties of Al&ndash;4.5%Cu/Al<sub>3</sub>Mg<sub>2</sub> Nanocomposite Prepared by Mechanical Alloying

Fabrication and heat treatment of ceramic-reinforced aluminium matrix composites - a review

Tribology of Metal Matrix Composites

Contact Info

Product

Resources

About

Hardness and Wear Properties of Al–4.5%Cu/Al<sub>3</sub>Mg<sub>2</sub> Nanocomposite Prepared by Mechanical Alloying

Hardness and Wear Properties of Al–4.5%Cu/Al<sub>3</sub>Mg<sub>2</sub> Nanocomposite Prepared by Mechanical Alloying