Evolution of microstructure under different homogenization conditions and its effect on recrystallization processes during hot rolling of AA5182 alloy
J. Min. Metall. Sect. B-Metall., 61 (3) (2025) 369-383. DOI:10.2298/JMMB250817029C
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Available online 21 December 2025
(Received 17 August 2025; Accepted 20 December 2025)
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This study investigates microstructure development of AA5182 Al-Mg alloy under various homogenization conditions and how these conditions affect recrystallization processes and texture development during the laboratory hot-rolling. Homogenization treatments were conducted for 16 h at 490°C and for 4 h, 16 h and 96 h at 550°C. Scanning electron microscopy (SEM) characterization including energy-dispersive X-ray spectroscopy (EDX) revealed the presence of Al3(Fe,Mn) and Alm(Fe,Mn) phases as Fe/Mn-bearing microconstituents in the as-cast state. These transformed into Al6(Fe,Mn) and α-Al(Fe,Mn)Si during homogenization treatments. The treatments also led to precipitation of Al6(Mn,Fe) and α-Al(Fe,Mn)Si dispersoid particles. The results of electron backscattered diffraction (EBSD) indicated that a weak deformation texture was present after hot-rolling. The morphology of grains and the degree of restoration were significantly influenced by homogenization conditions. The distribution and density of dispersoids had a strong effect on the mechanisms of recovery and recrystallization.
Keywords: AA5182 alloy; Homogenization; (Fe,Mn)-bearing microconstituents; Mn-bearing dispersoids; Recrystallization
Correspondence Address:
Miljana Popović,
University of Belgrade, Faculty of Technology and Metallurgy, Belgrade, Serbia;
email: miljana@tmf.bg.ac.rs
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