Mechanical Properties and Creep Behavior of Mg-Gd-Y-Zr Alloys

Gao, Yan; Wang, Qu Dong; Jin, Gu; Zhao, Yao; Yan, Tao

doi:10.4028/0-87849-432-4.163

Cited by 6 publications

(8 citation statements)

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“…In addition, the average atomic fraction ratio between magnesium and gadolinium+yttrium was approximately 7.22. Therefore, the secondary phase can be formulated as Mg 7.22 (Gd, Y), which is significantly different from the previous reports that suggested the secondary phase in the Mg−Gd−Y−Zr series is Mg 24 (Gd, Y) 5 or Mg 5 (Gd, Y) [25–28]. According to the Mg 24+x Y 5−x (1.08≤x≤1.30) series reported by other researchers, the atomic fraction of magnesium in the Mg 24+x Y 5−x series is higher than that of Mg 24 Y 5 or Mg 5 Gd, and the atomic fraction ratio between magnesium and yttrium is close to 7 [29].…”

Section: Resultscontrasting

confidence: 71%

Study on the evolution of the microstructure, phase composition, three‐dimensional morphology, and hardness in the solution treatment of Mg−7.80Gd−2.43Y−0.38Zr alloy

Liu

Zhang

et al. 2021

Materialwissenschaft Werkst

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The evolution of the microstructure, phase composition, three‐dimensional morphology, and hardness of Mg−7.80Gd−2.43Y−0.38Zr (wt.%) alloys during solution treatment at 480 °C is investigated using scanning electron microscopy (SEM), electron probe micro‐analyzer, nanoindentation, and x‐ray tomography. The as‐cast alloy consists of an α‐Mg matrix phase and divorced eutectics, including the secondary and the supersaturated magnesium phases. The chemical composition of the secondary phase is similar to that of Mg7.22(Gd, Y), and the nanoindentation hardness of the secondary phase is significantly higher than that of the α‐Mg matrix phase, according to the energy‐dispersive spectroscopic and nanoindentation analyses. The three‐dimensional morphology and quantitative information, such as the number and volume fraction of the secondary phases during the solution treatment, are discussed in detail. A large number of small acicular secondary phases are found near the large secondary phase after solution treatment at 480 °C for 1 h, while the acicular phase disappears completely after 2 h. The secondary phase dissolves into the α‐Mg matrix after solution treatment for 8 h, and the solution‐treated alloy primarily consists of an α‐Mg matrix phase and a cuboid‐shaped phase, which was identified as (Gd,Y)H2.

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Section: Resultscontrasting

confidence: 71%

Study on the evolution of the microstructure, phase composition, three‐dimensional morphology, and hardness in the solution treatment of Mg−7.80Gd−2.43Y−0.38Zr alloy

Liu

Zhang

et al. 2021

Materialwissenschaft Werkst

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“…As transition element, Zn is often added to further improve the mechanical properties by both solid solution strengthening and age hardening 11, 12. Maeng et al 13 reported that with the increase of Zn content the hardness of Mg–Zn alloys increases, meanwhile more works indicated the strengthening effect of Zn in Mg–RE solid solution 14–16. In addition, Mg–RE alloys have received tremendous attention due to their high specific strength at both room and elevated temperatures as well as their excellent creep resistance 8, 10, 17.…”

Section: Introductionmentioning

confidence: 99%

Effects of Y and Zn atoms on the elastic properties of Mg solid solution from first‐principles calculations

Fan

et al. 2011

Physica Status Solidi (b)

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94 Zn 2 ) are adopted to simulate the variation of solute atoms content. Structural optimization is performed firstly, and then the five independent elastic constants of Mg solid solution are calculated. The bulk modulus B, shear modulus G, Young's modulus E and Poisson ratio n are also derived by Voigt-Reuss-Hill (VRH) approximation, indicating a strong dependence of the elastic modulus on concentration of the solute atoms. Using the bulk modulus/ shear modulus ratio (B/G), the change in the ductility of Mg solid solution with the solute atom content is further studied. In the end, the electronic density of states (DOS) is calculated and discussed.

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“…Shanghai Jiao tong University developed the JDM1-JDM4 series alloys [7][8][9][10][11] to address the lack of strength, plasticity, heat tolerance, and corrosion resistance of magnesium alloys, to satisfy the needs of the automobile industry for lightweight structural components. The typical tensile mechanical properties of these magnesium alloys are shown in Table 2.…”

Section: Development Of High-performance Magnesium Rare-earth (Re) Almentioning

confidence: 99%

“…JDM3 [10] is an Mg-Gd-Y-Zn-Zr based alloy, which was developed by the addition of Zn in JDM2 to form high-thermal stability, long period stacking ordered (LPSO) phases. JDM3 alloy is both strengthened by the basal LPSO phases and the prismatic precipitates.…”

Section: Development Of High-performance Magnesium Rare-earth (Re) Almentioning

confidence: 99%

Automobile Lightweight Technology: Development Trends of Aluminum/Magnesium Alloys and Their Forming Technologies

Fu¹,

Peng²,

Ding³

2018

Chinese Journal of Engineering Science

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Mechanical Properties and Creep Behavior of Mg-Gd-Y-Zr Alloys

Cited by 6 publications

References 0 publications

Study on the evolution of the microstructure, phase composition, three‐dimensional morphology, and hardness in the solution treatment of Mg−7.80Gd−2.43Y−0.38Zr alloy

Study on the evolution of the microstructure, phase composition, three‐dimensional morphology, and hardness in the solution treatment of Mg−7.80Gd−2.43Y−0.38Zr alloy

Effects of Y and Zn atoms on the elastic properties of Mg solid solution from first‐principles calculations

Automobile Lightweight Technology: Development Trends of Aluminum/Magnesium Alloys and Their Forming Technologies

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