Improving the property of wear rate and hardness by adding hybrid nanomaterials to AA7075

Authors

DOI:

https://doi.org/10.15587/1729-4061.2022.255331

Keywords:

AA7075, nano-hybrid material, wear rate, coefficient of friction, hardness test

Abstract

Aluminum alloys have become an essential material in many modern applications, such as automobiles, marines and aviation industries. It is expected that more applications will heavily depend on aluminum alloys to reduce the weight and maintain safety standards, many previous studies have done in this regard. Numerous of these applications’ parts could be subjected to different loading and environmental conditions. This includes wearing stress and loss of the surface properties. To address these issues, intensive researches have been conducted aiming to improve aluminum wear resistance. However, there is an increasing demand to provide a comprehensive understanding of the mechanisms of enhancing wear resistance. Preparation of nano-materials combined with aluminum alloy can be made in several known metallurgical methods. One of the most important difficulties and challenges faced in the manufacture of these nano-materials is to obtain a homogeneous mixture that does not have manufacturing defects. The present work aims to process and evaluate the Nano-hybrid composites of with different ratios of (Cu+Ti) mixed with AA7075 by using the liquid stir casting method by using (pin-on-disc) wear testing apparatus.

The results showed when using multiple speeds and different loads in practical experiments, that the volumetric wear loss increase from 2.8 mm3 to 29.89 mm3 for zero–Nano and from 0.889 mm3 to 3.09 mm3 for 0.8 %+0.3 % (Cu+Ti) composite at speed 100 to 300 respectively. And from 12.81 mm3 to 0.889 mm3 at 25N. The coefficient of friction is reduced with the addition of reinforced material at 0.8 %+0.3 % (Cu+Ti) composite from 0.172 to 0.05. The hardness (BH) of the prepared composites increases with increasing the amount of hybrid Nano–reinforced materials. The enhancement percentage of 25.4 % is attained compared to the matrix material. These additions, which were in certain proportions, improved the mechanical properties

Author Biographies

Ali Yousuf Khenyab, Al-Salam University

Doctor of Mechanical Engineering

Department of Mechanical Engineering

Raad Mohammed Abed, Ministry of Higher Education and Scientific Research

Doctor of Mechanical Engineering

Department of Studies Engineering

Ali Raad Hassan, University of Technology-Iraq

Doctor of Mechanical Engineering

Department of Mechanical Engineering

Hussain Jasim M. Al-Alkawi, Bilad Alrafidain University

Doctor of Mechanical Engineering

Department of Aeronautical Engineering

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Published

2022-04-30

How to Cite

Khenyab, A. Y., Abed, R. M., Hassan, A. R., & Al-Alkawi, H. J. M. (2022). Improving the property of wear rate and hardness by adding hybrid nanomaterials to AA7075 . Eastern-European Journal of Enterprise Technologies, 2(12 (116), 30–36. https://doi.org/10.15587/1729-4061.2022.255331

Issue

Vol. 2 No. 12 (116) (2022): Materials Science

Section

Materials Science

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Copyright (c) 2022 Ali Yousuf Khenyab, Raad Mohammed Abed, Ali Raad Hassan, Hussain Jasim M. Al-Alkawi

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