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Micro and Nanosystems

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ISSN (Print): 1876-4029
ISSN (Online): 1876-4037

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Research Article

Influence of Nano-sized Al2O3 Reinforcements on the Mechanical Behavior of the Al7075 Composites

Author(s): M.S. Prashanth Reddy, Hemadri P. Raju, Nagaraj R. Banapurmath, Vinod Kumar V. Meti* and Arun Y. Patil

Volume 14, Issue 1, 2022

Published on: 15 March, 2021

Page: [59 - 67] Pages: 9

DOI: 10.2174/1876402913666210315160435

Price: $65

Abstract

Aims: Al7075 is a well-defined alloy for its excellent physical and mechanical behavior, such as high strength, toughness, and low density. To reach the expectations of the automobile and aerospace applications, the properties of Al7075 alloy have to be improved by reinforcing nano-sized Al2O3 particles.

Objectives: Synthesis and characterization of the Al7075 alloy reinforced with Al2O3 nano particles for different structural engineering applications.

Methods: In this present work, nano-sized Al2O3 particles were added and dispersed homogeneously using a stir casting technique. AA7076/Al2O3 composites were prepared by varying wt.% percent of Al2O3 reinforcement particles (0.75, 1, 1.25, 1.5. 1.75 and 2 wt.% (weight-percentage)).

Results: The SEM micrographs reveal the homogeneous distribution of Al2O3 reinforcements along the grain boundaries of the Al7075 matrix material. The experimental test results showed that the addition of Al2O3 reinforcements and the mechanical properties of the Al7075/Al2O3 composite improved as compared to the Al7075 matrix material.

Conclusion: The composite with 1.5 wt.% Al2O3 showed higher strength and hardness as compared to other reinforcements.

Keywords: Nanocomposites, density, microstructure, hardness, and mechanical properties, finite element method.

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