Synergistic Balance of Strength and Corrosion Resistance in Al–Mg–Er Alloys

Zhou, Hongxia; Zhang, Qian; Zhou, Miaolei; Liu, Xuebing; Li, Yong; Zhang, Xinfang

doi:10.1007/s40195-020-01007-1

Cited by 7 publications

(6 citation statements)

References 27 publications

(32 reference statements)

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“…However, the addition of rare earth element Erbium (Er) to the alloys purifies the alloy matrix and thus improving the corrosion resistance. Zhongjun Wang et al [35] and Haifei Zhou et al [36] confirmed that the suitable addition of Er elements enhance the corrosion resistance of magnesium alloys. Heat treatment plays a pivotal role in the corrosion resistance of magnesium alloys.…”

Section: Introductionmentioning

confidence: 96%

“…The choice of the heat treatment process is supposed to accompany with specific alloy compositions and application requirements to optimize corrosion performance. However, the explanation of corrosion performance changes only focused on corrosion rate and electrochemistry in the literature [35,36]. The underlying reasons for these changes and the subsequent effects of the formed corrosion products on the corrosion behavior were not revealed deeply.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of T4 treatment on the corrosion resistance of Mg-4Al-6Er-0.3Mn alloy

Liang,

Ma,

Qin

et al. 2024

Mater. Res. Express

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The Mg-Al alloys exhibit poor corrosion resistance when they exposed to Cl- attack. To solve this problem, Erbium (Er) and Manganese (Mn) are added to the Mg-4Al alloy and the Mg-4Al-6Er-0.3Mn is T4 treated to enhance the corrosion resistance of the alloy. Then the corrosion behaviors of the as-extruded alloy and the T4 alloy are investigated in this paper. It is found that the effective cathode Mg17Al12 is significantly reduced in the alloy due to the precipitation of Mg17Al12 being suppressed by Al2Er and the dissolution of the Mg17Al12 in the alloy. It is observed that the corrosion products transform from needle-like to tetrahedral-shaped corrosion products during the transformation process, which leads to severe pit corrosion. The results show that the T4 treatment can delay the transformation of the morphologies of the corrosion products, thereby improved the alloy corrosion resistance during the early stages of corrosion.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Effect of T4 treatment on the corrosion resistance of Mg-4Al-6Er-0.3Mn alloy

Liang,

Ma,

Qin

et al. 2024

Mater. Res. Express

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“…Generally, the alloy cannot be strengthened by heat treatment. Its main strengthening effect comes from strain hardening and solution strengthening [3]. One effective way to improve the mechanical properties of 5xxx aluminum alloys is solution strengthening using micro-alloying.…”

Section: Introductionmentioning

confidence: 99%

Artificial Neural Network and Fuzzy Logic Based Techniques for Numerical Modeling and Prediction of Aluminum-5%Magnesium Alloy Doped with REM Neodymium

Chukwuma,

Godwills,

Nwaeju

et al. 2024

IJNM

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In this study, the mechanical properties of aluminum-5%magnesium doped with rare earth metal neodymium were evaluated. Fuzzy logic (FL) and artificial neural network (ANN) were used to model the mechanical properties of aluminum-5%magnesium (0 -0.9 wt%) neodymium. The single input (SI) to the fuzzy logic and artificial neural network models was the percentage weight of neodymium, while the multiple outputs (MO) were average grain size, ultimate tensile strength, yield strength elongation and hardness. The fuzzy logic-based model showed more accurate prediction than the artificial neutral network-based model in terms of the correlation coefficient values (R).

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“…Adding Er and Zr into Al–Mg alloys can improve the comprehensive properties [ 11 ]. The addition of Er can form the Al 3 Er phase in the alloy, which is coherent with the Al matrix, can refine grains, pin dislocations, and improve the strength and recrystallization temperature of the alloy [ 12 ]. Adding Er and Zr into Al–Mg alloys can not only refine grains and strengthen precipitation but also form a core−shell Al 3 (Er, Zr) phase.…”

Section: Introductionmentioning

confidence: 99%

Effect of Zr and Er Addition on the Microstructural Evolution of a Novel Al−Mg−Zn−Er−Zr Alloy during Hot Compression

Wei

Zuo

et al. 2023

Materials

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The hot compression experiment of homogenized Al−5.2Mg−0.6Mn−0.29Zn−0.16Er–0.12Zr alloy was carried out by the Gleeble-3500 thermal simulation testing system. The deformation behavior in temperatures of 350~500 ℃ and deformation rates of 0.01~10 s−1 was studied. The relationship between stress and strain rate and deformation temperature was analyzed. The constitutive equation of alloy high-temperature deformation was constructed by the Zener–Hollomon method, and the hot working diagram with the true strain of 0.2 and 0.5 was constructed according to the dynamic material model. The research results show that flow stress has a positive correlation with strain rate and a negative correlation with temperature. The steady flow stress during deformation can be described by a hyperbolic sinusoidal constitutive equation. Adding Er and Zr into Al−Mg alloy can not only refine grains and strengthen precipitation but also form a core–shell Al3(Er, Zr) phase. In the deformation process, Al3(Er, Zr) precipitates can pin dislocations and inhibit dynamic recrystallization (DRX). Dynamic recovery (DRV) is dominant during hot deformation. The mechanism of dynamic recovery is dislocation motion. At high temperatures, Al3(Er, Zr) can also inhibit grain coarsening. The average hot deformation activation energy of the alloy is 203.7 kJ/mol. This high activation energy can be due to the pinning effect of Er and Zr precipitates. The processing map of the alloy was analyzed and combined with the observation of microstructure, the hot deformation instability zone of the alloy was determined, and the suitable process parameters for hot deformation were obtained, which were 450~480 °C, and the strain rate is 0.01~0.09 s−1.

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Synergistic Balance of Strength and Corrosion Resistance in Al–Mg–Er Alloys

Cited by 7 publications

References 27 publications

Effect of T4 treatment on the corrosion resistance of Mg-4Al-6Er-0.3Mn alloy

Effect of T4 treatment on the corrosion resistance of Mg-4Al-6Er-0.3Mn alloy

Artificial Neural Network and Fuzzy Logic Based Techniques for Numerical Modeling and Prediction of Aluminum-5%Magnesium Alloy Doped with REM Neodymium

Effect of Zr and Er Addition on the Microstructural Evolution of a Novel Al−Mg−Zn−Er−Zr Alloy during Hot Compression

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