In this study, the effect of thermomechanical treatment on intergranular corrosion (IGC) susceptibility of the Zn-modified Al-5.1 wt pct Mg-0.7 wt pct Mn alloy plates was investigated. The specimens underwent varied amounts of cold work, while final annealing was conducted in the 493 K to 533 K (220 A degrees C to 260 A degrees C) temperature range. It was shown that the extent of cold work, especially at lower temperatures of treatment, had a profound effect on the corrosion resistance of the alloy. Such observation was in direct correlation with the morphology of precipitated ternary grain boundary phase (Al-Mg-Zn). Microstructural characterization showed that, depending on the amount of cold work, different deformation substructures were created, which, in turn, influenced kinetics and the mechanism of precipitation. Wetting of the grain boundaries by the ternary grain boundary phase (Al-Mg-Zn) was a signature of the IGC susceptible state and occurred in the specimens that were subj...ected to a lower degree of cold work. The specimens that underwent a higher degree of cold work (over 30 pct) showed superior corrosion resistance as a result of ternary grain boundary phase (Al-Mg-Zn) precipitation in the form of discrete particles at the grain boundaries as well as in grain interiors.
Source:
Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science, 2014, 45A, 10, 4572-4579
Publisher:
Springer, New York
Funding / projects:
Ministry of Education, Science and Technological Development, Republic of Serbia
TY - JOUR
AU - Halap, Akram
AU - Radetić, Tamara
AU - Popović, Miljana
AU - Romhanji, Endre
PY - 2014
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2690
AB - In this study, the effect of thermomechanical treatment on intergranular corrosion (IGC) susceptibility of the Zn-modified Al-5.1 wt pct Mg-0.7 wt pct Mn alloy plates was investigated. The specimens underwent varied amounts of cold work, while final annealing was conducted in the 493 K to 533 K (220 A degrees C to 260 A degrees C) temperature range. It was shown that the extent of cold work, especially at lower temperatures of treatment, had a profound effect on the corrosion resistance of the alloy. Such observation was in direct correlation with the morphology of precipitated ternary grain boundary phase (Al-Mg-Zn). Microstructural characterization showed that, depending on the amount of cold work, different deformation substructures were created, which, in turn, influenced kinetics and the mechanism of precipitation. Wetting of the grain boundaries by the ternary grain boundary phase (Al-Mg-Zn) was a signature of the IGC susceptible state and occurred in the specimens that were subjected to a lower degree of cold work. The specimens that underwent a higher degree of cold work (over 30 pct) showed superior corrosion resistance as a result of ternary grain boundary phase (Al-Mg-Zn) precipitation in the form of discrete particles at the grain boundaries as well as in grain interiors.
PB - Springer, New York
T2 - Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science
T1 - Influence of the Thermomechanical Treatment on the Intergranular Corrosion Susceptibility of Zn-Modified Al-5.1 Wt Pct Mg-0.7 Wt Pct Mn Alloy Sheet
EP - 4579
IS - 10
SP - 4572
VL - 45A
DO - 10.1007/s11661-014-2386-y
ER -
@article{
author = "Halap, Akram and Radetić, Tamara and Popović, Miljana and Romhanji, Endre",
year = "2014",
abstract = "In this study, the effect of thermomechanical treatment on intergranular corrosion (IGC) susceptibility of the Zn-modified Al-5.1 wt pct Mg-0.7 wt pct Mn alloy plates was investigated. The specimens underwent varied amounts of cold work, while final annealing was conducted in the 493 K to 533 K (220 A degrees C to 260 A degrees C) temperature range. It was shown that the extent of cold work, especially at lower temperatures of treatment, had a profound effect on the corrosion resistance of the alloy. Such observation was in direct correlation with the morphology of precipitated ternary grain boundary phase (Al-Mg-Zn). Microstructural characterization showed that, depending on the amount of cold work, different deformation substructures were created, which, in turn, influenced kinetics and the mechanism of precipitation. Wetting of the grain boundaries by the ternary grain boundary phase (Al-Mg-Zn) was a signature of the IGC susceptible state and occurred in the specimens that were subjected to a lower degree of cold work. The specimens that underwent a higher degree of cold work (over 30 pct) showed superior corrosion resistance as a result of ternary grain boundary phase (Al-Mg-Zn) precipitation in the form of discrete particles at the grain boundaries as well as in grain interiors.",
publisher = "Springer, New York",
journal = "Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science",
title = "Influence of the Thermomechanical Treatment on the Intergranular Corrosion Susceptibility of Zn-Modified Al-5.1 Wt Pct Mg-0.7 Wt Pct Mn Alloy Sheet",
pages = "4579-4572",
number = "10",
volume = "45A",
doi = "10.1007/s11661-014-2386-y"
}
Halap, A., Radetić, T., Popović, M.,& Romhanji, E.. (2014). Influence of the Thermomechanical Treatment on the Intergranular Corrosion Susceptibility of Zn-Modified Al-5.1 Wt Pct Mg-0.7 Wt Pct Mn Alloy Sheet. in Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science
Springer, New York., 45A(10), 4572-4579.
https://doi.org/10.1007/s11661-014-2386-y
Halap A, Radetić T, Popović M, Romhanji E. Influence of the Thermomechanical Treatment on the Intergranular Corrosion Susceptibility of Zn-Modified Al-5.1 Wt Pct Mg-0.7 Wt Pct Mn Alloy Sheet. in Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science. 2014;45A(10):4572-4579.
doi:10.1007/s11661-014-2386-y .
Halap, Akram, Radetić, Tamara, Popović, Miljana, Romhanji, Endre, "Influence of the Thermomechanical Treatment on the Intergranular Corrosion Susceptibility of Zn-Modified Al-5.1 Wt Pct Mg-0.7 Wt Pct Mn Alloy Sheet" in Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science, 45A, no. 10 (2014):4572-4579,
https://doi.org/10.1007/s11661-014-2386-y . .
