“Impact of Grain Reduction on the Behavior of AZ91 Magnesium Alloys During Wear and Corrosion”

M Naik, Gajanan; Kumar B M, Santhosh; M M, Shivakumar; S, Ramesh; Prashanth B H, Maruthi; Anne6, Gajanan

doi:10.22068/ijmse.3987

Volume 22, Issue 3 (September 2025) IJMSE 2025, 22(3): 60-71 | Back to browse issues page

‎ 10.22068/ijmse.3987

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M Naik G, Kumar B M S, M M S, S R, Prashanth B H M, Anne6 G. “Impact of Grain Reduction on the Behavior of AZ91 Magnesium Alloys During Wear and Corrosion”. IJMSE 2025; 22 (3) :60-71
URL: http://ijmse.iust.ac.ir/article-1-3987-en.html

“Impact of Grain Reduction on the Behavior of AZ91 Magnesium Alloys During Wear and Corrosion”

Gajanan M Naik

, Santhosh Kumar B M

, Shivakumar M M

, Ramesh S

, Maruthi Prashanth B H

, Gajanan Anne6

Abstract: (958 Views)

Magnesium and the alloys made from the same metal are utilized in the engineering applications such as automotive, marine, and aircraft, among others due to high strength to weight. Nevertheless, the applications of magnesium alloys are currently limited to a certain level due to their poor wear and corrosion properties. Another effective strategy for enhancing these properties involves utilizing the process of equal channel angular extrusion (ECAE), which serves to refine the grain structure, thereby resulting in improved material properties. This paper aims to establish the relationship between grain size reduction and wear and corrosion of AZ91 alloy. The wear performances of both coarse-grained and fine-grain alloy were conducted using L9 orthogonal array of experiments in order to study the effects of control parameters on wear performance. In the study, it has also been identified that through ECAP, the corrosion barrier and wear characteristics of the alloy were enhanced due to fine-grain-structure and the spheroidal precipitation of the second β-phase particles. Further, the influence of these changes on the performance of the AZ91 Mg alloy was assessed using SEM.

Keywords: AZ91, Equal channel angular press, Wear, Fine grain, Corrosion.