Effect of carbonate additive on the microstructure and corrosion resistance of plasma electrolytic oxidation coating on Mg-9Li-3Al alloy

Jin, Shidai; Ma, Xiaochun; Wu, Ruizhi; Li, Tingqu; Wang, Jiaxiu; Крит, Б. Л.; Hou, Linrui; Zhang, Jinghuai; Wang, Guixiang

doi:10.1007/s12613-021-2377-0

Cited by 50 publications

(19 citation statements)

References 40 publications

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“…However, the simulation results of the maximum width of the molten pool and the maximum width of the heat-affected zone on the steel side are equivalent to the actual size. Therefore, the simulation model is reasonable for calculating and analyzing the temperature field of steel and magnesium laser welding [ 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of Laser Welding Parameters on Joint Structure of AZ31B Magnesium Alloy and 304 Stainless Steel

Wan

Zhang

et al. 2022

Materials

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The effects of laser welding parameters on the interface microstructure of AZ31B magnesium alloy and 304 stainless steel were investigated. After welding, a scanning electron microscope and ultra-depth of field microscope were used to observe the microstructure of the welded material, to analyze the effects of power on the interface morphology. The simulation of laser welding of magnesium and steel was carried out by the COMSOL software. The results showed that when the power was 15 W–20 W, the temperature did not reach the melting point of magnesium alloy, there was MgO at the welding, and the interface had poor connection strength. When the power was 35 W–50 W, the temperature reached or even exceeded the boiling point of magnesium alloy, and the interface formed hot cracks, pores, and oxides and had poor joint strength. When the power was 25 W–30 W, the temperature was between the melting point and boiling point of magnesium, and the interface had excellent connection strength.

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Section: Resultsmentioning

confidence: 99%

Effect of Laser Welding Parameters on Joint Structure of AZ31B Magnesium Alloy and 304 Stainless Steel

Wan

Zhang

et al. 2022

Materials

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“…As far as the Mg-Li alloy is concerned, the crystal structure changes with the addition of a Li element [6][7][8]. When the content of Li does not exceed 5.7 wt.%, the alloy is completely composed of the α-Mg phase with the hexagonal close-packed (HCP) structure; when Li content is in the range of 5.7 to 10.3 wt.%, the alloy is composed of the α-Mg phase and the body-centered cubic (BCC) structured β-Li phase; when the Li content exceeds 10.3 wt.%, the alloy consists of the β-Li phase [9][10][11]. As a hot research topic, the Mg-8Li alloy with a dual-phase structure has excellent comprehensive properties.…”

Section: Introductionmentioning

confidence: 99%

“…At present, alloying [14,15], heat treatment [16,17], severe plastic distorting [9,18,19], and surface coating [20][21][22] are commonly used to improve the corrosion resistance of the Mg-Li alloy. Alloying can effectively enhance the corrosion performance of the Mg-Li alloy.…”

Section: Introductionmentioning

confidence: 99%

Effect of I-Phase on Microstructure and Corrosion Resistance of Mg-8.5Li-6.5Zn-1.2Y Alloy

Fang

Wang

et al. 2023

Materials

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The effects of solid solution treatment duration on the corrosion behavior and microstructure behavior of the cast Mg-8.5Li-6.5Zn-1.2Y (wt.%) alloy were investigated. This study revealed that with the treatment time for solid solutions increasing from 2 h to 6 h, the amount of α-Mg phase gradually decreases, and the alloy presents a needle-like shape after solid solution treatment for 6 h. Meanwhile, when the solid solution treatment time increases, the I-phase content drops. Exceptionally, under 4 h of solid solution treatment, the I-phase content has increased, and it is dispersed uniformly over the matrix. What we found in our hydrogen evolution experiments is that the hydrogen evolution rate of the as-cast Mg-8.5Li-6.5Zn-1.2Y alloy following solid solution processing for 4 h is 14.31 mL·cm−2·h−1, which is the highest rate. In the electrochemical measurement, the corrosion current density (icorr) value of as-cast Mg-8.5Li-6.5Zn-1.2Y alloy following solid solution processing for 4 h is 1.98 × 10−5, which is the lowest density. These results indicate that solid solution treatment can significantly improve the corrosion resistance of the Mg-8.5Li-6.5Zn-1.2Y alloy. The I-phase and the α-Mg phase are the primary elements influencing the corrosion resistance of the Mg-8.5Li-6.5Zn-1.2Y alloy. The existence of the I-phase and the border dividing the α-Mg phase and β-Li phase easily form galvanic corrosion. Although the I-phase and the boundary between the α-Mg phase and β-Li phase will be corrosion breeding sites, they are more effective in inhibiting corrosion.

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“…MgÀLi alloy has the characteristics of low density, high specific strength and specific modulus, and excellent electromagnetic shielding performance, making it widely used in the fields of aerospace, automotive, electronics, and national defense. [1,2] However, the strength of the MgÀLi alloy is relatively low, which greatly limits its rapid development and wide application. Therefore, strengthening of the MgÀLi alloy has become a research focus.…”

Section: Introductionmentioning

confidence: 99%

Effects of Al, Y, and Zn Additions on the Microstructure and Mechanical Properties of Mg−3Li Alloy

Yang

Wang

et al. 2022

Adv Eng Mater

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The influence of Al, Y, and Zn additions on the microstructure and mechanical properties of Mg−3Li alloy is investigated. It is revealed that Al and Y form the Al2Y phase that can refine α‐Mg grains. Y and Zn form the 18R long‐period‐stacking‐ordered (LPSO) structure phase that can coordinate deformation. In addition, the formed SFs can hinder dislocation slip. However, the Mg24Y5 phase weakens the grain boundaries. After solid solution at 520 °C, the Al2Y phase and LPSO phase do not change. The Mg24Y5 phase gradually disappears, SFs decrease, and the grain of the alloy grows. After subsequent hot rolling at 350 °C, the grains and LPSO phase are gradually elongated along the rolling direction, and the LPSO phase is twisted. SFs increase and the grain of the alloy is refined. In addition, MgY phase is precipitated inside the matrix. With the rolling reduction of 70%, the Mg−3Li−1Al−4Y−1Zn alloy possesses the ultimate tensile strength (UTS) and elongation (EL) values of 287 MPa and 5.2%.

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Effect of carbonate additive on the microstructure and corrosion resistance of plasma electrolytic oxidation coating on Mg-9Li-3Al alloy

Cited by 50 publications

References 40 publications

Effect of Laser Welding Parameters on Joint Structure of AZ31B Magnesium Alloy and 304 Stainless Steel

Effect of Laser Welding Parameters on Joint Structure of AZ31B Magnesium Alloy and 304 Stainless Steel

Effect of I-Phase on Microstructure and Corrosion Resistance of Mg-8.5Li-6.5Zn-1.2Y Alloy

Effects of Al, Y, and Zn Additions on the Microstructure and Mechanical Properties of Mg−3Li Alloy

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