Mechanical and corrosion properties of AA5083 alloy sheets produced by accumulative roll bonding (ARB) and conventional cold rolling (CR)
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 / sensitizationSource:
Materials and Corrosion-Werkstoffe Und Korrosion, 2018, 69, 7, 858-869Publisher:
- 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
Collections
Institution/Community
Tehnološko-metalurški fakultetTY - 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 . .