Effect of Nd on the microstructure and corrosion behaviour of Mg-9Li-3Al magnesium alloy in 3.5 wt.% NaCl solution

Dinesh, P.; Manivannan, S.; Babu, S.P. Kumaresh; Natarajan, S.

doi:10.1016/j.matpr.2019.05.034

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…According to the binary phase diagrams of Mg-Gd and Mg-Nd, the ultimate solid solubility of Gd and Nd in Mg are 23.49 wt% and 3.6 wt%, respectively [26]. It is clear that much Nd is aggregated in the eutectic phase of the E-alloy 0, which was confirmed as Mg41Nd5 [27]. As for the E-alloy 3, most of the alloying elements dissolve into the matrix and distribute more homogeneously.…”

Section: Microstructure and Microhardnessmentioning

confidence: 89%

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Effects of Gd/Nd Ratio and Aging Treatment on Wear Behavior of Mg-Nd-Gd-Sr-Zn-Zr Alloys

Wang,

Jia

2023

Coatings

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The Mg-(4-x)Nd-xGd-0.3Sr-0.2Zn-0.4Zr (x = 0, 1, 2, and 3 wt%, Gd/Nd = 0, 1/3, 1, and 3) alloys were hot extruded and then aged (T5). The friction and wear properties of the as-extruded and as-aged alloys were studied using a ball-on-disk wear testing machine and a scanning electron microscope to reveal the impacts of the Gd/Nd ratio and aging treatment. The results show that the friction coefficient of the as-extruded alloys increases first and then decreases with increasing Gd/Nd ratio. After aging, the friction coefficient of the alloys decreases slightly. The Gd/Nd ratio has no significant effect on the wear rate of the as-extruded alloys, and the wear rate decreases first and then increases with the increase in the Gd/Nd ratio for the as-aged alloys. The T5 alloy with a Gd/Nd ratio of 1/3 has the best wear resistance. The wear mechanisms of alloys mainly include abrasive wear, oxidation wear, and delamination wear.

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Section: Microstructure and Microhardnessmentioning

confidence: 89%

“…Studies have shown that both Gd and Nd can refine magnesium alloy grains by inhibiting grain boundary migration [24][25][26][27]29]. The solubility of Nd in Mg is much lower than that of Gd in Mg.…”

Section: Discussionmentioning

confidence: 99%

Effects of Gd/Nd Ratio and Aging Treatment on Wear Behavior of Mg-Nd-Gd-Sr-Zn-Zr Alloys

Wang,

Jia

2023

Coatings

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“…At present, the main methods of improving the corrosion resistance of magnesium alloys are alloying, surface modification, heat treatment, and plastic deformation [7][8][9]. The composite elements of Nd, Sm and Sr change the proportion and shape of β-Li phase, subsequently reduce the current corrosion density, and improve the corrosion resistance of Mg-9Li-3Al magnesium alloy [10][11][12]. Song et al [13] found that the surface of Mg-2Zn-Mn-Ca-Ce magnesium alloy forms a dense magnesium hydroxide coating after it is simultaneously subjected to angular pressing and annealing, thereby enhancing corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Effect of Cross Rolling on the Corrosion Resistance of AZ31 Magnesium Alloy

Huang¹,

Zou²,

Yang³

et al. 2020

Rev. Chim.

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The effect of different rolling methods on the microstructure and corrosion behavior of AZ31 magnesium alloy in a 3.5% NaCl solution was studied via potentiodynamic polarization scanning, constant current discharge and electrochemical impedance spectroscopy. Results show that the corrosion current densities of cross rolling and unidirectional rolling are 8.60�10-3 and 4.68�10-2 A/cm2, respectively. Their difference is 5.4fold, the charge transfer resistance of cross rolling is large, the corrosion of one-way rolling is more serious than that of cross rolling, the discharge performance of cross rolling is more stable, and the anode polarization is small. After cross rolling, the grain size of the plate is relatively uniform and the corrosion products are non-adherent and less, so it is easy to fall off from its surface, which increases the effective contact between the electrolyte and the alloy surface and has more stable discharge performance.

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