Comparison of mechanical and wearing properties between LM13 matrix and Stir cast LM13/B4C/Gr hybrid composites of various composition


  • M.H. Faisal
  • S. Prabagaran
  • T.S. Vishnu





Boron carbide, graphite, hybrid aluminium matrix composite, LM13.


Aluminium/graphite composites are the need of modern times for addressing the fuel saving issues. The graphite in such composites act as solid lubricant and it reduce external fuel requirements. But such composites are having degraded mechanical properties due to the graphite content in composite. In order to solve the negative effect of graphite on mechanical properties of LM13/Gr self-lubricating composite this study was conducted to find out the mechanical properties of LM13/B4C/Gr Metal Matrix Composites. Boron carbide was selected as reinforcement because of its better reinforcement properties compared to alumina and silicon carbide. The properties of the hybrid composites were compared with the LM13/Gr self-lubricating composite to study the enhancement in mechanical properties that has been caused by the boron carbide particles. Using computerized universal testing machine and rock-well hardness tester mechanical properties such as hardness and tensile strength were tested. Pin on disk testing machine was used to analyse the wear behavior. The test results indicates that by raising weight % of boron carbide particles in the LM13, tensile strength and hardness of the hybrid composites was increased compared to self-lubricating composite accompanied by better tribological properties.


[1] Raviteja T, Radhika N & Raghu R, “Fabrication and Mechanical Properties of Stir Cast Al-Si12Cu/B4C Compositesâ€, International Journal of Research in Engineering and Technology, (2013), pp.343-346.

[2] Mallikarjuna GB & Sreenivas KV, “Preparation and property evaluation of aluminium silica composites by casting routeâ€, International Journal of Mechanical Engineering and Robotic Research, (2012), pp.118-124.

[3] Madheswaran K & Sugumar S, “Mechanical characterization of Aluminium-Boron carbide composites with influence of Calcium carbide particlesâ€, International Journal of Emerging Technology and Advanced Engineering, (2015), pp.492-496.

[4] Prabagaran S, Chandramohan G & Shanmughasundaram P, “Influence of Graphite on the hardness and wear behavior of AA6061–B4C Compositeâ€, Materiali in tehnologije/Materials and technology, Vol.48, (2014), pp.661–667.

[5] Londhe VD & Mhaske MS, “Evaluation of Tribological behavior of LM13-Silicon carbide composite under Ambient & elevated temperatureâ€, International Journal of Scientific Research Engineering & Technology, (2014), pp.334-340.

[6] Hemanth J, “Tribological behavior of cryogenically treated B4Cp/Al–12% Si compositesâ€, Elsevier, wear, (2014), pp.1732–1744

[7] Rama Rao S & Padmanabhan G, “Fabrication and Mechanical Properties of Aluminium-Boron Carbide Compositesâ€, International Journal of Materials and Biomaterials Applications, Vol.2, No.3, (2012), pp.15-18

[8] Raviteja T, Radhika N & Raghu R, “Fabrication and Mechanical Properties of Stir Cast Al-Si12Cu/B4C Compositesâ€, International Journal of Research in Engineering and Technology, (2013), pp.343-346.

[9] Kiran Deore, Lalita Aage & Manoj Hajare, “Testing of Wear Rate Frictional Force and Coefficient of Friction Computationally Using Pin On Diskâ€, International Journal of Engineering Trends and Technology, (2015), pp.256-259.

[10] Nair SS & Faisal MH, “Fabrication of LM6/B4C/Gr Hybrid Aluminium Metal Matrix Compositeâ€, Journal for Research, (2016), pp.12-17.

[11] Gowri Shankar MC, Jayashree PK, Shetty R, Kinia A & Sharma SS, “Individual and combined effect of reinforcements on stir cast aluminium metal matrix composites-a reviewâ€, International Journal of Current Engineering and Technology, Vol.3, (2013), pp.922-934.

[12] Kalaiselvan SK, Murugan N & Parameswaran S, “Production and characterization of AA6061–B4C stir cast compositeâ€, Materials and Design, Vol.32, No.7, (2011), pp.4004–4009.

View Full Article: