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- Title
AVALIAÇÃO DA PRESENÇA DE SOLUTO EM FOLHAS DE ALUMÍNIO.
- Authors
de Almeida, Leandro; Tressia, Gustavo
- Abstract
Aluminum foils with a thickness of less than 200 μm are used in numerous applications, such as the manufacture of different products, disposable packaging, radiator fins and blisters. These applications require both good corrosion resistance and mechanical strength. Iron present in 1xxx and 8xxx aluminium alloys forms two main secondary phases: Al3Fe and α-AlFeSi, the last one as dispersoids, altering the kinetics of recrystallization and therefore giving rise to excellent strength and elongations after annealing. Silicon and iron form phases such asO-Al13 Fe4 (monoclinic), Al6Fe (orthorhombic), Al12Fe3Si and Al3Fe, which are controlled during solidification to improve mechanical properties. Manganese present in 3xxx alloys may form two main phases Al6 (Mn, Fe) and α-Al12(Fe, Mn)2Si, but Al12(Fe, Mn)3Si may also be present when silicon is added so many properties are strongly dependent on both type and particles shapes, Thus, microstructure must be well controlled in the solidification and subsequent processes.
- Subjects
ALUMINUM foil; CORROSION resistance; SOLIDIFICATION; MANUFACTURED products; ALUMINUM; MANGANESE; HYPEREUTECTIC alloys; IRON-manganese alloys
- Publication
Tecnologia em Metalurgia, Materiais e Mineração, 2019, Vol 16, Issue 3, p340
- ISSN
2176-1515
- Publication type
Article
- DOI
10.4322/2176-1523.20191775