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Mechanical Properties of AA 7075/Al2O3/SiC Nano-metal Matrix Composites by Stir-Casting Method

  • S. SureshEmail author
  • G. Harinath Gowd
  • M. L. S. Deva Kumar
Original Contribution
  • 62 Downloads

Abstract

Demand rises in a worldwide series of the new materials at national and international level. The metal matrix nano-composites are extremely beneficial in several applications such as aerospace, automobile, armed forces, and other commercial applications due to lightweight and cost-effective. In the present study, three various hybrid compositions, namely nano-Al2O3 (20–30 nm), nano-SiC (50 nm), and Mg 1 wt% (fixed), were used as reinforcement materials. Magnesium is to enhance the wettability of Al2O3 and SiC particles in the Al matrix. The compositions are executed at 1.0, 2.0, 3.0, and also 4.0 weight % of nano-Al2O3 and nano-SiC. The cast samplings undertake the tests like heat treatment, microstructural examination, density, tensile, hardness, impact, SEM, EDAX, and XRD analysis. SEM images subject that the nanoparticles relatively disperse as well as attain fine grain microstructure in the matrix. The results reveal that the reinforcement of nanoparticles in Al 7075 matrix substantially increases the mechanical behaviour when compared to base metal.

Keywords

AA 7075 Nano-materials SiC Al2O3 

Notes

Acknowledgements

The author wishes to thank the Department of Mechanical Engineering, Jawaharlal Nehru Technological University, Ananthapuramu, India, for providing facilities and necessary support in conducting experiments and also Dept. of Mechanical Engineering, MITS, Madanapalle, India, and Dept. of Mechanical Engineering, JNTUA, Ananthapuramu, India, for their support and discussion in the research work.

Compliance with Ethical Standards

Conflict of interest

The author(s) declare(s) that there is no conflict of interest.

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Copyright information

© The Institution of Engineers (India) 2019

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringJawaharlal Nehru Technological UniversityAnanthapuramuIndia
  2. 2.Department of Mechanical EngineeringMadanapalle Institute of Technology and ScienceChittoorIndia

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