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Charecterisation of Aluminium Reinforced with Graphite MMC’S


Affiliations
1 Mechanical Engg, Sir M Visvesvaraya Institute of Technology, Bangalore, India
2 School of Engineering, Presidency University, Itgalpura, Rajankunte, Bangalore, India
     

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The global technical market’s demand trend for high strength, high performance, better quality, reduced cost and reduced weight materials has led to an emerging development in research and utilization of composite materials over conventional monolithic materials in various industrial applications. Aluminium –graphite composite has been developed by stir casting technique. Al-Graphite composites having 2%, 4%, 6%, 8% of pure aluminium is prepared. Tensile strength, Hardness test, Impact strength as a function of graphite performs and metal matrices have been determined. The tribological properties were varied significantly with addition of solid lubricant-graphite. The hardness test of composites is carried on Brinell hardness Tester and tensile strength is measured using a Universal testing machine and Charpy and Izod tests are conducted to find the impact energy. Around 15% increase is observed in the hardness of the composite compared to the hardness of pure aluminium and no significant increase is found in the impact energy of the composite, but more than 21% increase is found in the tensile strength of the composite.

Keywords

Pure Aluminium, Graphite, Composites, Stir-Casting, Metal Matrices, Mechanical Properties.
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Abstract Views: 265

PDF Views: 2




  • Charecterisation of Aluminium Reinforced with Graphite MMC’S

Abstract Views: 265  |  PDF Views: 2

Authors

S. Shivakumar
Mechanical Engg, Sir M Visvesvaraya Institute of Technology, Bangalore, India
G. N. Lokesh
School of Engineering, Presidency University, Itgalpura, Rajankunte, Bangalore, India
M. Nataraja
Mechanical Engg, Sir M Visvesvaraya Institute of Technology, Bangalore, India

Abstract


The global technical market’s demand trend for high strength, high performance, better quality, reduced cost and reduced weight materials has led to an emerging development in research and utilization of composite materials over conventional monolithic materials in various industrial applications. Aluminium –graphite composite has been developed by stir casting technique. Al-Graphite composites having 2%, 4%, 6%, 8% of pure aluminium is prepared. Tensile strength, Hardness test, Impact strength as a function of graphite performs and metal matrices have been determined. The tribological properties were varied significantly with addition of solid lubricant-graphite. The hardness test of composites is carried on Brinell hardness Tester and tensile strength is measured using a Universal testing machine and Charpy and Izod tests are conducted to find the impact energy. Around 15% increase is observed in the hardness of the composite compared to the hardness of pure aluminium and no significant increase is found in the impact energy of the composite, but more than 21% increase is found in the tensile strength of the composite.

Keywords


Pure Aluminium, Graphite, Composites, Stir-Casting, Metal Matrices, Mechanical Properties.

References