• Mohammad Arif Ibrahim Ali
• Jayasheel I Harti
• Sahadeva G N
• Madeva Nagaral

In the present study, the experimental results of the mechanical properties of Al7049-nano B4C composites presented. The composites containing 3, 6 to 9 wt. % of graphite in steps of 3 wt.% were prepared using liquid metallurgy route stir casting technique. For each composite, reinforcement particles were preheated to a temperature of 400˚C and then dispersed in steps of two into the vortex of molten Al7049 alloy to improve the wettability and distribution. Microstructural characterization was investigated by scanning electron microscopy (SEM) and elemental analysis was done by EDS. Tensile, compression and hardness tests were carried out in order to identify mechanical properties of composites. The results of microstructural study revealed distribution of nano B4C particles. The results of this study revealed that as the weight percentage of nano B4C particles were increased, there was significant increase in hardness, ultimate tensile strength, yield strength and compression strength of Al7049 alloy composites. Further, there was slight drop in the ductility of the Al7049 alloy composites as compared to the base. Tensile fractography was studies by using the SEM micrographs of tensile fractured specimens.

Al7049, Nano B4C particles, Stir Casting, Microstructure, Mechanical Behaviour, Fractography

"Influence of Nano B4C Particulates on The Mechanical Characterization of Al7049 Alloy Composites", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.54-64, April-2019, Available :http://www.jetir.org/papers/JETIR1904308.pdf

"Influence of Nano B4C Particulates on The Mechanical Characterization of Al7049 Alloy Composites", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp54-64, April-2019, Available at : http://www.jetir.org/papers/JETIR1904308.pdf