Structural stability, anisotropic elasticities and electronic structure of η-MgZn2 under pressures: A first-principle investigation

Shao, Hongbang; Huang, Yuanchun; Liu, Yu; Xiao, Zhengbing

doi:10.1016/j.ssc.2021.114644

Cited by 4 publications

(3 citation statements)

References 40 publications

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“…The distribution of Zn was consistent with the distribution of the nano-precipitated phase. This demonstrates that the MgZn2 phase could not be fragmented after hot compression and is conducive to hindering the migration of grain boundaries during said compression [21]. As shown in Figure 7, while the dislocations are arranged in a disordered manner at the grain boundary, the nano-precipitation particles further aggravated the proliferation and packing of the dislocations.…”

Section: Microstructuresmentioning

confidence: 90%

“…The distribution of Zn was consistent with the distribution of the nano-precipitated phase. This demonstrates that the MgZn2 phase could not be fragmented after hot compression and is conducive to hindering the migration of grain boundaries during said compression [21]. The bright-field TEM images of the cross-section after compression at 100 °C are shown in Figure 5.…”

Section: Microstructuresmentioning

confidence: 94%

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BCC-Based Mg–Li Alloy with Nano-Precipitated MgZn2 Phase Prepared by Multidirectional Cryogenic Rolling

et al. 2022

Metals

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In this study, we deformed the single β phase Mg–Li alloy, Mg–16Li–4Zn–1Er (LZE1641), with conventional rolling (R) and multi-directional rolling (MDR), both at cryogenic temperature. Results showed that the nano-precipitation phase MgZn2 appeared in the alloy after MDR, but this phenomenon was not present in the alloy after R. The finite element simulation result showed that the different deformation modes changed the stress distribution inside the alloy, which affected the microstructures and the motion law of the solute atoms. The high-density and dispersively distributed MgZn2 particles with a size of about 35 nm were able to significantly inhibit the grain boundary migration. They further hindered the dislocation movement and consolidated the dislocation strengthening and fine-grain strengthening effects. Compared with the compressive strength after R (273 MPa), the alloy compressive strength was improved by 21% after MDR (331 MPa). After 100 °C compression, the MgZn2 remained stable.

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Section: Microstructuresmentioning

confidence: 90%

“…The distribution of Zn was consistent with the distribution of the nano-precipitated phase. This demonstrates that the MgZn2 phase could not be fragmented after hot compression and is conducive to hindering the migration of grain boundaries during said compression [21]. The bright-field TEM images of the cross-section after compression at 100 °C are shown in Figure 5.…”

Section: Microstructuresmentioning

confidence: 94%

BCC-Based Mg–Li Alloy with Nano-Precipitated MgZn2 Phase Prepared by Multidirectional Cryogenic Rolling

et al. 2022

Metals

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show abstract

“…4), and the compressive properties of the composites became worse. Shao et al [25] showed that the elevated pressure leads the MgZn 2 phase to become uncompressible; MgZn 2 phase not only becomes more rigid but also its interatomic covalent bonds get enhanced at high pressure. The decrease in compressive strength may be due to the uneven stress between the hard MgZn 2 phase and the matrix, so it is necessary to study the morphology of fractured compressive specimens.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Effect of Sintering Time on the Mechanical and Corrosion Behavior of Zn–Mg Composites with a Core–Shell Structure Prepared by SPS

Cui

Zhou

Hao

et al. 2023

Acta Metall. Sin. (Engl. Lett.)

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Zn-10 Mg composite with a core-shell structure was prepared by spark plasma sintering (SPS) technology, and a systematic study of the microstructure and properties has been conducted for different sintering times. The shell layer dominated by the hard MgZn 2 phase thickens with the increase in sintering time, which has a positive effect on the mechanical and degradation properties of the material. The sample sintered for 20 min (T-20) has the best mechanical properties, with a compressive strength of 226 MPa and a compression rate of 6.5%. The corrosion resistance of samples increases as the sintering time prolongs, while the hydrogen evolution volume and pH value decrease in the immersion experiment. Furthermore, the increase in the shell thickness significantly reduces the corrosion rate, which is attributed to the weakening of the galvanic corrosion reaction between the Mg core and the MgZn 2 shell. Therefore, composite with unique core-shell structure provides an advanced design idea for degradable biomaterials, and a reasonable control of sintering time can provide the optimal design strategy.

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Zn interlayer-induced modifications in interfacial structure and fracture behavior of Cyclic Hot-Pressed Mg/Al laminated composites

Liu,

Zhu,

Yuan

et al. 2024

Materials Today Communications

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Structural stability, anisotropic elasticities and electronic structure of η-MgZn2 under pressures: A first-principle investigation

Cited by 4 publications

References 40 publications

BCC-Based Mg–Li Alloy with Nano-Precipitated MgZn2 Phase Prepared by Multidirectional Cryogenic Rolling

BCC-Based Mg–Li Alloy with Nano-Precipitated MgZn2 Phase Prepared by Multidirectional Cryogenic Rolling

Effect of Sintering Time on the Mechanical and Corrosion Behavior of Zn–Mg Composites with a Core–Shell Structure Prepared by SPS

Zn interlayer-induced modifications in interfacial structure and fracture behavior of Cyclic Hot-Pressed Mg/Al laminated composites

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