Vol.24, No.3, 2024, pp. 386–392
https://doi.org/10.69644/ivk-2024-03-0386

COMPARATIVE TRIBOLOGICAL ANALYSIS OF Al-Fe-Si AND Al-Fe-Cr BASED ALLOYS

Haidar Faisal Helal Mobark1, Ali Hussein Al-Azzawi2, Abdulraheem Kadhim AbidAli3, Barhm Mohamad4*

1) College of Agriculture, Al-Qasim Green University, Babel, IRAQ

H.F.H. Mobark  0000-0001-6809-8452

2) Department of Mechanical Engineering, College of Engineering, University of Misan, Misan, IRAQ

A.H. Al-Azzawi  0000-0003-4402-6205

3) College of Materials Engineering, University of Babylon, Babel, IRAQ

A.K. AbidAli  0000-0001-8961-0339

4) Department of Petroleum Technology, Koya Technical Institute, Erbil Polytechnic University, Erbil, IRAQ

B. Mohamad  0000-0001-8107-6127  *email: barhm.mohamad@epu.edu.iq

 

Abstract

This study presents a comparative investigation of the tribological behaviour and microstructural characteristics of two different alloys, namely 77.3 % Al-1.8 % Fe-16.7 % Si and 54.1 % Al-12.8 % Fe-27.8 % Cr. High temperature alloys are fabricated by stir casting technique. Tribology analysis is conducted to assess wear, crack formation, and cavity zones for both alloys using Scanning Electron Microscopy (SEM). Additionally, optical micrography is employed to examine their microstructures. The results reveal significant differences between the two alloys, with the 77.3 % Al-1.8 % Fe-16.7 % Si alloy exhibiting higher Vickers hardness and superior wear resistance compared to the 54.1 % Al-12.8 % Fe-27.8 % Cr alloy. Optical micrographs confirm a well-defined grain distribution for the former alloy and a similar homogeneous microstructure for the latter.

Keywords: material science, stir casting, alloys fabrication, tribology analysis, surface damage

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