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319439

AN EXPERIMENTAL STUDY OF THE MECHANICAL AND TRIBOLOGICAL BEHAVIOUR OF Al6061/MWCNTs METAL MATRIX COMPOSITES

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Last updated: 25 Dec 2024

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Abstract

The present work aims to study the mechanical and tribological behavior of the metallic matrix nanocomposites of Al6061 alloy reinforced with various weight fractions (wt.%) of 0, 0.5, 1, and 1.5 multi-walled carbon nanotubes (MWCNTs) to be applied in automotive industries. All the present nanocomposites were produced using a hot-compaction powder metallurgy technique at temperatures of 420, 460, and 500 ºC and a pressure of 700 MPa.
 
After that, theoretical, actual, and relative densities were determined. The microstructure was also examined using a scanning electron microscope (SEM) to confirm the distribution of the MWCNTs within Al6061 alloy. Moreover, mechanical characteristics of the produced nanocomposites were examined by Vickers microhardness and compression tests. The tribological characteristics were also examined by wear and friction tests using pin-on-disk test rig. Then, the worn surfaces were examined using SEM to study the occurred wear mechanism.
 
According to the experimental results, the optimum compaction temperature was 460 ºC. Consequently, the relative density improved and reached the highest value (97 %) at a MWCNTs content of 1.5 wt. %. Examination of the microstructure also demonstrated the good distribution of 1 wt. % MWCNTs within the Al6061 alloy. All mechanical and tribological properties including Vickers hardness number (VHN), ultimate compressive strength, wear rate, and the friction coefficient of the Al6061 alloy were improved and reached their best values at a content of 1.5 wt. % MWCNTs. Finally, the worn surface of the Al6061/1.5 wt. % MWCNTs nanocomposites contains less wear marks than that of pure Al6061 and other nanocomposites.

DOI

10.21608/jest.2023.319439

Keywords

wear rate, Friction coefficient, Vickers hardness number, Metal Matrix Composites, ultimate compressive strength

Authors

First Name

A. El-Sayed M.

Last Name

Hassan

MiddleName

-

Affiliation

Production Technology Dept., Faculty of Technology and Education, Beni-Suef University, Beni-Suef, EGYPT.

Email

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City

-

Orcid

-

First Name

H.

Last Name

Abdelaziz

MiddleName

-

Affiliation

Production Technology Dept., Faculty of Technology and Education, Beni-Suef University, Beni-Suef, EGYPT.

Email

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City

-

Orcid

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First Name

Ragab K.

Last Name

Abdel-Magied

MiddleName

-

Affiliation

Mechanical Dept., Faculty of Engineering, Beni-Suef University, Beni-Suef, EGYPT.

Email

ragab56@gmail.com

City

-

Orcid

-

First Name

Hammad T.

Last Name

Elmetwally

MiddleName

-

Affiliation

Production Technology Dept., Faculty of Technology and Education, Beni-Suef University, Beni-Suef, EGYPT.

Email

hammadtawfik@yahoo.com

City

-

Orcid

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Volume

20

Article Issue

4

Related Issue

43731

Issue Date

2023-10-01

Receive Date

2023-10-01

Publish Date

2023-10-01

Page Start

117

Page End

130

Print ISSN

2090-5882

Online ISSN

2090-5955

Article File

JEST_Volume 20_Issue 4_Pages 117-130.pdf

PDF . 775.3kB

Link

https://jest.journals.ekb.eg/article_319439.html

Detail API

https://jest.journals.ekb.eg/service?article_code=319439

Order

319,439

Type

Original Article

Type Code

1,211

Publication Type

Journal

Publication Title

Journal of the Egyptian Society of Tribology

Publication Link

https://jest.journals.ekb.eg/

MainTitle

AN EXPERIMENTAL STUDY OF THE MECHANICAL AND TRIBOLOGICAL BEHAVIOUR OF Al6061/MWCNTs METAL MATRIX COMPOSITES

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Type

Article

Created At

25 Dec 2024