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Mechanical and corrosion properties of AA5083 alloy sheets produced by accumulative roll bonding (ARB) and conventional cold rolling (CR)

Authorized Users Only
2018
Authors
Alil, Ana
Popović, Miljana
Bajat, Jelena
Romhanji, Endre
Article (Published version)
Metadata
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Abstract
Influence of accumulative roll bonding (ARB) and conventional cold rolling (CR) on the mechanical and corrosion properties of AA5083 alloy sheets has been studied. Tensile tests showed significant increase in strength and a decrease in elongation after each ARB deformation and cold rolling reductions. Results of nitric acid mass loss test (NAMLT) revealed that cold rolled and ARB processed specimens were resistant toward intergranular corrosion (IGC) in as-deformed state. However, after 7 days of sensitization at 100 and 150 degrees C, cold rolled material became IGC sensitive, while ARB specimens stayed IGC resistant. IGC susceptibility can be correlated with different morphology and distribution of -phase (Mg2Al3) precipitated during sensitization. It was found that extensive shear banding contributed a favorable distribution of -phase precipitates in the structure of IGC resistant ARB processed specimens. In case of IGC susceptible conventionally cold rolled specimens, large amount ...of -phase precipitated preferentially along the elongated grain boundaries. Electrochemical parameters were in a good correlation with the results of NAML tests, which in turn, confirmed the superiority of ARB multilayered structure over conventional cold rolled structure in terms of IGC susceptibility and corrosion stability.

Keywords:
accumulative roll bonding / Al-Mg alloy / cold rolling / intergranular corrosion / sensitization
Source:
Materials and Corrosion-Werkstoffe Und Korrosion, 2018, 69, 7, 858-869
Publisher:
  • Wiley-VCH Verlag Gmbh, Weinheim
Funding / projects:
  • Ministry of Education, Science, and Technological Development
  • Design of processing and welding of the high strength Al-Mg alloys for road and railway trasportation applications (RS-34018)

DOI: 10.1002/maco.201709915

ISSN: 0947-5117

WoS: 000437291300003

Scopus: 2-s2.0-85039714887
[ Google Scholar ]
4
3
URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3863
Collections
  • Radovi istraživača / Researchers’ publications (TMF)
  • Radovi istraživača (Inovacioni centar) / Researchers’ publications (Innovation Centre)
Institution/Community
Tehnološko-metalurški fakultet
TY  - JOUR
AU  - Alil, Ana
AU  - Popović, Miljana
AU  - Bajat, Jelena
AU  - Romhanji, Endre
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3863
AB  - Influence of accumulative roll bonding (ARB) and conventional cold rolling (CR) on the mechanical and corrosion properties of AA5083 alloy sheets has been studied. Tensile tests showed significant increase in strength and a decrease in elongation after each ARB deformation and cold rolling reductions. Results of nitric acid mass loss test (NAMLT) revealed that cold rolled and ARB processed specimens were resistant toward intergranular corrosion (IGC) in as-deformed state. However, after 7 days of sensitization at 100 and 150 degrees C, cold rolled material became IGC sensitive, while ARB specimens stayed IGC resistant. IGC susceptibility can be correlated with different morphology and distribution of -phase (Mg2Al3) precipitated during sensitization. It was found that extensive shear banding contributed a favorable distribution of -phase precipitates in the structure of IGC resistant ARB processed specimens. In case of IGC susceptible conventionally cold rolled specimens, large amount of -phase precipitated preferentially along the elongated grain boundaries. Electrochemical parameters were in a good correlation with the results of NAML tests, which in turn, confirmed the superiority of ARB multilayered structure over conventional cold rolled structure in terms of IGC susceptibility and corrosion stability.
PB  - Wiley-VCH Verlag Gmbh, Weinheim
T2  - Materials and Corrosion-Werkstoffe Und Korrosion
T1  - Mechanical and corrosion properties of AA5083 alloy sheets produced by accumulative roll bonding (ARB) and conventional cold rolling (CR)
EP  - 869
IS  - 7
SP  - 858
VL  - 69
DO  - 10.1002/maco.201709915
ER  - 
@article{
author = "Alil, Ana and Popović, Miljana and Bajat, Jelena and Romhanji, Endre",
year = "2018",
abstract = "Influence of accumulative roll bonding (ARB) and conventional cold rolling (CR) on the mechanical and corrosion properties of AA5083 alloy sheets has been studied. Tensile tests showed significant increase in strength and a decrease in elongation after each ARB deformation and cold rolling reductions. Results of nitric acid mass loss test (NAMLT) revealed that cold rolled and ARB processed specimens were resistant toward intergranular corrosion (IGC) in as-deformed state. However, after 7 days of sensitization at 100 and 150 degrees C, cold rolled material became IGC sensitive, while ARB specimens stayed IGC resistant. IGC susceptibility can be correlated with different morphology and distribution of -phase (Mg2Al3) precipitated during sensitization. It was found that extensive shear banding contributed a favorable distribution of -phase precipitates in the structure of IGC resistant ARB processed specimens. In case of IGC susceptible conventionally cold rolled specimens, large amount of -phase precipitated preferentially along the elongated grain boundaries. Electrochemical parameters were in a good correlation with the results of NAML tests, which in turn, confirmed the superiority of ARB multilayered structure over conventional cold rolled structure in terms of IGC susceptibility and corrosion stability.",
publisher = "Wiley-VCH Verlag Gmbh, Weinheim",
journal = "Materials and Corrosion-Werkstoffe Und Korrosion",
title = "Mechanical and corrosion properties of AA5083 alloy sheets produced by accumulative roll bonding (ARB) and conventional cold rolling (CR)",
pages = "869-858",
number = "7",
volume = "69",
doi = "10.1002/maco.201709915"
}
Alil, A., Popović, M., Bajat, J.,& Romhanji, E.. (2018). Mechanical and corrosion properties of AA5083 alloy sheets produced by accumulative roll bonding (ARB) and conventional cold rolling (CR). in Materials and Corrosion-Werkstoffe Und Korrosion
Wiley-VCH Verlag Gmbh, Weinheim., 69(7), 858-869.
https://doi.org/10.1002/maco.201709915
Alil A, Popović M, Bajat J, Romhanji E. Mechanical and corrosion properties of AA5083 alloy sheets produced by accumulative roll bonding (ARB) and conventional cold rolling (CR). in Materials and Corrosion-Werkstoffe Und Korrosion. 2018;69(7):858-869.
doi:10.1002/maco.201709915 .
Alil, Ana, Popović, Miljana, Bajat, Jelena, Romhanji, Endre, "Mechanical and corrosion properties of AA5083 alloy sheets produced by accumulative roll bonding (ARB) and conventional cold rolling (CR)" in Materials and Corrosion-Werkstoffe Und Korrosion, 69, no. 7 (2018):858-869,
https://doi.org/10.1002/maco.201709915 . .

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