Mechanical and corrosion performances of Al–Mg-Mn 5083 rolled alloys microalloyed with Sc and Zr in different thermomechanical processing conditions

The mechanical properties, corrosion behavior, and related microstructures of Al–Mg-Mn AA5083 rolled sheets microalloyed with Sc and Zr were investigated under various thermomechanical processing conditions. The results revealed that adding 0.05 wt.% Sc resulted in a minor change in the alloy perfor...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials science 2024-08, Vol.59 (31), p.14692-14715
Main Authors: Algendy, Ahmed Y., Rometsch, Paul, Chen, X.-Grant
Format: Article
Language:English
Subjects:
Alloys
Aluminum
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Corrosion
Corrosion resistance
Corrosion resistant alloys
Crystallography and Scattering Methods
Deformation effects
Fibrous structure
Grain boundaries
Intergranular corrosion
Magnesium
Manganese
Materials Science
Mechanical properties
Metals & Corrosion
Microalloying
Microstructure
Polymer Sciences
Recrystallization
Scandium
Solid Mechanics
Thermomechanical properties
Thermomechanical treatment
Yield strength
Zirconium
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The mechanical properties, corrosion behavior, and related microstructures of Al–Mg-Mn AA5083 rolled sheets microalloyed with Sc and Zr were investigated under various thermomechanical processing conditions. The results revealed that adding 0.05 wt.% Sc resulted in a minor change in the alloy performance relative to the base alloy. When the Sc content reached 0.1 wt.% it significantly improved the alloy strength and recrystallization resistance, and dramatically lowered the intergranular corrosion (IGC) susceptibility. Compared with the base alloy, the 0.1 wt.% Sc addition (along with 0.08 wt.% Zr) increased the yield strength (YS) by 8, 75, 25, and 33% for the cold-rolled (H18-), annealed (O-), extra-deformed (H116-), and stabilized (H321-tempers) conditions, respectively. In addition, the recovery and recrystallization resistances were significantly improved, as demonstrated by the retained deformed fibrous structure in the O- and H321-tempers. Furthermore, the IGC susceptibility was substantially decreased in the H321-temper due to the prevention of continuous β -Al 3 Mg 2 precipitation along recrystallized grain boundaries. The YS of the final rolled sheets was modeled using constitutive analysis to predict the effects of various microstructural components on the strengthening contribution. Graphical Abstract
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-024-10044-5