www.tjprc.org editor@tjprc.org MECHANICAL BEHAVIOR OF AL 7075 REINFORCED WITH AL 2 O 3 AND SIC NANO PARTICLES FABRICATED BY STIR CASTING METHOD S. SURESH 1 , G. HARINATHGOWD 2 & M. L. S. DEVA KUMAR 3 1 Research Scholar, Department of Mechanical Engineering, Jawaharlal Nehru Technological University, Ananthapuramu, Andrapradesh, India 2 Professor, Department of Mechanical Engineering, Madanapalle Institute of Technology and Science, Chittoor, Aadrapradesh, India 3 Vice Principal & Professor, Department of Mechanical Engineering, Jawaharlal Nehru Technological University, Ananthapuramu, Andrapradesh, India ABSTRACT Demand increases in a global range of the new brand products at national and International level. The metal matrix Nano composites are highly useful in many applications such as aerospace, automobile, military and various other architectural applications. In my research, I have used three different hybrid compositions, namely Nano Al 2 O 3 (20- 30nm), Nano-SiC (50nm) and micro Mg which uses 1 Weight %. Magnesium is to improve the wet ability of Al 2 O 3 and SiC particles in the Al matrix. The compositions are carried out simultaneously 1.0, 2.0, 3.0, and 4.0 Weight %. Of Nano Al 2 O 3 and Nano SiC. The cast specimens undergo the tests like heat treatment, micro-structural evaluation, density, and porosity measurements, tensile, hardness, Impact, EDX along with SEM. SEM images expose that the Nano particles, fairly distribute and achieve fine grain microstructure in the matrix. The outcomes reveal the reinforcement of Nano particles in Al 7075 matrix substantially increases the Mechanical properties when compared to base metal. KEYWORDS: Al7075, Stir Casting, Al 2 O 3 , SiC & Nanocomposites Received: Jan 25, 2018; Accepted: Feb 14, 2018; Published: Mar 07, 2018; Paper Id.: IJMPERDAPR201858 INTRODUCTION Aluminum alloy composites are useful in the aerospace, the automobile, the defense as well as architectural applications. The composites have unique properties. In most cases, various ceramic powders such as boron carbide, zirconia, aluminum oxide (Al 2 O 3 ) and silicon carbide (SiC), are added to the aluminum alloy to increase the Mechanical and Tribological behavior [1]. The hybrid composites have been developed recently with improved mechanical properties. The present research study reported that the consistent mixing, as well as perfect vetting by using the parameters such as time, speed and temperature [2]. Among many manufacturing procedures, the traditional stir casting is an enticing approach to producing AMC which is relatively affordable. In various particles, silicon carbide as well as Al 2 O 3 is chemically appropriate for lightweight aluminum and also create a suitable bonding with the matrix [3]. The objective of the present investigation is to analyze the mechanical behavior of Al7075 alloy enhanced with three types of fragments viz. Sic (50nm), Al 2 O 3 (20-30 nm) and also 1 Weight % of Mg (micro). The tensile, hardness and toughness results are far better when compared with a non-reinforced matrix product. The tensile strength of the metal matrix Nanocomposite specimens examined under Universal testing equipment, and a Original Article International Journal of Mechanical and Production Engineering Research and Development (IJMPERD) ISSN (P): 2249-6890; ISSN (E): 2249-8001 Vol. 8, Issue 2, Apr 2018, 495-508 © TJPRC Pvt. Ltd.