A study on microstructure of aluminium matrix composites

Abstract This work focuses on the effect of graphite particles addition on the microstructure of Al6082 metal matrix composites manufactured by conventional stir casting process. The reinforcement content was varied from 0% to 12% in a step of 3%. The microstructures of the manufactured composites were analyzed by scanning electron micrographic test. Elemental mapping of the Al6082 + 12% Gr reinforced composite was carried out to see the different elements present with their amount. Different elements present in the manufactured composites were verified by X-ray diffraction technique to justify the elemental map analysis. The result of this microstructural investigation revealed that a non-uniform distribution of graphite particles takes place at all weight percentages of graphite reinforcement.

[1]  B. C. Pai,et al.  Optimization of mixing parameters through a water model for metal matrix composites synthesis , 2007 .

[2]  K. Manisekar,et al.  Tribological properties of powder metallurgy – Processed aluminium self lubricating hybrid composites with SiC additions , 2013 .

[3]  Anthony Kelly,et al.  Comprehensive composite materials , 1999 .

[4]  D. Abdul Budan,et al.  Comparative Study on the Machinability Aspects of Aluminium Silicon Carbide and Aluminium Graphite Composites , 2007 .

[5]  S. C. Vettivel,et al.  Experimental investigation on mechanical behaviour, modelling and optimization of wear parameters of B4C and graphite reinforced aluminium hybrid composites , 2014 .

[6]  C. B. Lin,et al.  A study on process and tribological behavior of Al alloy/Gr. (p) composite , 1998 .

[7]  M. Guo,et al.  Tribological behavior of self-lubricating aluminium/SiC/graphite hybrid composites synthesized by the semi-solid powder-densification method , 2000 .

[8]  A. M. Hassan,et al.  Effect of Graphite and/or Silicon Carbide Particles Addition on the Hardness and Surface Roughness of Al-4 wt% Mg Alloy , 2007 .

[9]  L. Froyen,et al.  Microstructure and interface characteristics of B4C, SiC and Al2O3 reinforced Al matrix composites: a comparative study , 2001 .

[10]  F. Toptan,et al.  Microstructural variations in cast B4C-reinforced aluminium matrix composites (AMCs) , 2008 .

[11]  M. Kok,et al.  Production and mechanical properties of Al2O3 particle-reinforced 2024 aluminium alloy composites , 2005 .

[12]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[13]  M. Surappa.  Microstructure evolution during solidification of DRMMCs (Discontinuously reinforced metal matrix composites): State of art , 1997 .

[14]  A. Elaya Perumal,et al.  Study on mechanical and wear properties of Al 7075/Al2O3/graphite hybrid composites , 2014 .

[15]  Suresh Dhiman,et al.  A study of sliding wear behaviors of Al-7075 alloy and Al-7075 hybrid composite by response surface methodology analysis , 2013 .

[16]  A. Baradeswaran,et al.  Wear and mechanical characteristics of Al 7075/graphite composites , 2014 .

[17]  Farshad Akhlaghi,et al.  Influence of graphite content on the dry sliding and oil impregnated sliding wear behavior of Al 2024-graphite composites produced by in situ powder metallurgy method , 2009 .

[18]  G. R. Jinu,et al.  Effect of graphite addition on mechanical behavior of Al6061/TiB2 hybrid composite using acoustic emission , 2014 .

[19]  B. Sridhara,et al.  Effect of silicon carbide particulates on wear resistance of graphitic aluminium matrix composites , 2010 .

[20]  P. Robi,et al.  Effect of chemical and ultrasound treatment on the tensile properties of carbon fibres , 1992 .

[21]  P. Rohatgi,et al.  Wear resistance of laser processed Al–Si–graphitep composites , 1997 .

[22]  Jing Liu,et al.  Wear behaviour and microstructural changes of SiCw-Al composite under unlubricated sliding friction , 1995 .

[23]  C. Garcia-cordovilla,et al.  Abrasive wear resistance of aluminium alloy/ceramic particulate composites , 1996 .

[24]  S. C. Kurnaz,et al.  Properties of alumina particulate reinforced aluminum alloy produced by pressure die casting , 2006 .

[25]  M.S.J. Hashmi,et al.  Metal matrix composites: production by the stir casting method , 1999 .