MECHANICAL PROPERTIES OF ALUMINUM ALLOYS PRODUCED USING DIFFERENT STIR-CAST STIRRING RATES

Oluwole Adigun; Adetoye Ayokunle  Aribisala; Aanuoluwapo Rebecca Adigun; Samuel Olugbenga Olusunle; Olawale Olarewaju Ajibola; Adebayo Felix Owa; Adeyemi Dayo Isadare; Chioma Ifeyinwa Madueke; Ige Emmanuel Abegunde; Kayode Benson Omonubi

doi:10.4314/njt.v43i3.8

Authors

O. Adigun Department of Mechatronics Engineering, Federal University Oye-Ekiti, Nigeria.
A. A. Aribisala Department of Mechatronics Engineering, Federal University Oye-Ekiti, Nigeria
A. R. Adigun Department of Industrial Chemistry, Federal University Oye-Ekiti, Nigeria
S. O. Olusunle Engineering Materials Development Institute, Akure, Nigeria
O. O. Ajibola Department of Materials and Metallurgical Engineering, Federal University Oye-Ekiti, Nigeria
A. F. Owa Department of Materials and Metallurgical Engineering, Federal University Oye-Ekiti, Nigeria
A. D. Isadaro Department of Materials Science and Engineering, Obafemi Awolowo University, Ile-Ife, Nigeria
C. I. Madueke Department of Materials and Metallurgical Engineering, Federal University Oye-Ekiti, Nigeria
I. E. Abegunde Department of Materials and Metallurgical Engineering, Federal University Oye-Ekiti, Nigeria
K. B. Omonubi Department of Materials and Metallurgical Engineering, Federal University Oye-Ekiti, Nigeria

DOI:

https://doi.org/10.4314/njt.v43i3.8

Keywords:

microstructure, Stir casting, mechanical properties, hardness, tensile stregth, aluminium copper alloy

Abstract

In this study, we examined how different stir casting stirring rates affected the mechanical properties of aluminum-copper (Al-Cu) alloys. Al-Cu alloys were cast and developed utilizing an electromechanical stir casting technique with stirring rates ranging from 0-90 revolutions per minute (rpm), and the alloys had Cu compositions of 0–15 wt. % (weight percent). The microstructural evolution was investigated using an advanced optical microscope. When the developed alloy materials were evaluated for microhardness and tensile strength, it was found that the raise in composition of copper and increase in stirring rate led to progressive improvements in microhardness while changes observed with the tensile strength were obviously indeterminate. The mechanisms responsible for the changes seen are also described.

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