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Effect of Graphite Content on Mechanical Properties and Friction Coefficient of Reinforced Aluminum Composites

  • SINTERED METALS AND ALLOYS
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Powder Metallurgy and Metal Ceramics Aims and scope

Aluminum matrix composites (AMCs) reinforced with different content (wt.%) of graphite (Gr) reinforcing particles are synthesized by stir casting technique. The fraction of reinforcing particles ranges from 5 to 15 wt.% at 5 wt.% intervals. Microstructures, density, porosity, hardness, tensile strength, and friction coefficient of fabricated particulate reinforced AMCs are studied. The scanning electron microscopy reveals a non-uniform distribution of reinforcing particles in the aluminum metal matrix. A non-uniform distribution of reinforcing particles is also confirmed by the elemental maps of C (Gr) present in particulate reinforced AMCs. The density of particulate reinforced AMCs decreases from 2.69 to 2.55 g/cm3, while the porosity increases from 0.37 to 2.45% with an increase in the fraction of reinforcing particles in the aluminum matrix from 0 to 15 wt.%, respectively. Both the hardness and ultimate tensile strength are reduced from 49.5 to 42 HV and 161.5 to 150 MPa, respectively, with a reduction in elongation from 8.6 to 6.5% with an increase in the volume fraction of reinforcing particles in the aluminum matrix from 0 to 15 wt.%, respectively. The average coefficient of friction reduced from 0.45 to 0.22 with an increase in the volume fraction of reinforcing particles in the aluminum matrix from 0 to 15 wt.%, respectively.

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Authors and Affiliations

  1. Panipat Institute of Engineering and Technology, Samalkha, Panipat, Haryana, India

    P. Sharma, K. Paliwal & V. Dabra

  2. Gautam Buddha University, Greater Noida, Uttar Pardesh, 201310, India

    S. Sharma

  3. Deenbandhu Chhotu Ram University of Science and Technology, Murthal, Sonipat, Haryana, 131001, India

    R. Kumar Garg

  4. National Institute of Technology, Kurukshetra, Haryana, 136118, India

    D. Khanduja

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  1. P. Sharma
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  5. D. Khanduja
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Correspondence to P. Sharma.

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Published in Poroshkovaya Metallurgiya, Vol. 56, Nos. 5–6 (515), pp. 35–45, 2017.

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Sharma, P., Sharma, S., Kumar Garg, R. et al. Effect of Graphite Content on Mechanical Properties and Friction Coefficient of Reinforced Aluminum Composites. Powder Metall Met Ceram 56, 264–272 (2017). https://doi.org/10.1007/s11106-017-9894-4

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  • DOI: https://doi.org/10.1007/s11106-017-9894-4

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