Articles
  • Influence of process routes on microstructure and mechanical properties of AA 5083 alloy processed by equal channel angular extrusion

  • T. Venugopala,*, R. Thirumalaib, D. Tamilvendanc and R. Prakashd

  • aAssociate Professor, Department of Mechanical Engineering, KGiSL Institute of Technology, Coimbatore, Tamilnadu
    bProfessor, Department of Aeronautical Engineering, Hindusthan Institute of Technology, Coimbatore, Tamilnadu
    aAssistant Professor, Department of Mechanical Engineering, School of Engineering, Mohan Babu University, Tirupathi, Andhra Pradesh
    aAssistant Professor, Department of Mechanical Engineering, AVS College of Technology, Salem, Tamilnadu

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The present investigation deals with the possible mechanism of improving the strength and ductility of AA-5083 alloy through severe plastic deformation (SPD). The grain refinement of ~4 μm is achieved using the equal channel angular extrusion (ECAE) of the SPD process. The as-received AA-5083 alloy was pre-annealed before the ECAE process. The annealed alloy was subjected to two different routes(RBC and RC) of ECAE process. The alloy processed under different routes (RBC and RC) exhibits the combination of enhanced strength and ductility due to finer microstructures. However, the RBC posses the enhanced yield strength of 392 MPa and 27% ductility. It is attributed to the shearing of planes in all three directions. Meanwhile, the RC processed alloy possess the increased strength, compared with the base alloy. The microstructural refinement obtained through the SPD process is corroborated with the compression, hardness and wear behaviour of the alloy. The base alloy exhibits the ultimate compressive strength of 168 MPa with the ductility of 22%. The SPD processed alloys RBC and RC exhibits the ultimate compressive stress of 535 MPa and 424 MPa. The hardness results also validate the enhanced strength of the SPD processed alloys. The (RBC) and (RC) exhibits the micro hardness values of 152Hv and 148 Hv respectively. The wear behaviour of the SPD processed alloys is analyzed using the Taguchi orthogonal array (L9).


Keywords: AA-5083 alloy, ECAE, Process routes, microstructure, mechanical properties, wear, severe plastic deformation.

This Article

  • 2026; 27(1): 96-104

    Published on Feb 28, 2026

  • 10.36410/jcpr.2026.27.1.96
  • Received on Oct 4, 2025
  • Revised on Nov 12, 2025
  • Accepted on Dec 1, 2025

Correspondence to

  • T. Venugopal

  • Associate Professor, Department of Mechanical Engineering, KGiSL Institute of Technology, Coimbatore, Tamilnadu
    Tel : +91 9894019632

  • E-mail: venugopalkgisl@gmail.com