Mechanical properties and deformation mechanisms of a novel fine-grained Mg-Gd-Y-Ag-Zr-Ce alloy with high strength-ductility synergy

Cui, Xiaofei; Fu, Wei; Fang, Daqing; Bi, Guangli; Ren, Zhenwen; Guo, Shengwu; Li, Suzhi; Ding, Xiangdong; Sun, Jun

doi:10.1016/j.jmst.2020.05.028

Cited by 34 publications

(2 citation statements)

References 54 publications

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“…Numerous researches have shown that the fine grain can enhance the mechanical performances and corrosion resistance of Mg alloys ( Cui et al, 2021 ; Dobkowska et al, 2021 ; Klu et al, 2022 ). In particular, grain refinement promotes the increase of grain boundaries as corrosion barriers, which can more effectively block the expansion of pitting corrosion.…”

Section: Magnesium and Magnesium Alloys For Biomedical Applicationsmentioning

confidence: 99%

A review on magnesium alloys for biomedical applications

Zhang

Wang

Liu

et al. 2022

Front. Bioeng. Biotechnol.

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Magnesium (Mg) and Mg alloys are considered as potential candidates for biomedical applications because of their high specific strength, low density, and elastic modulus, degradability, good biocompatibility and biomechanical compatibility. However, the rapid corrosion rate of Mg alloys results in premature loss of mechanical integrity, limiting their clinical application in load-bearing parts. Besides, the low strength of Mg alloys restricts their further application. Thus, it is essential to understand the characteristics and influencing factors of mechanical and corrosion behavior, as well as the methods to improve the mechanical performances and corrosion resistance of Mg alloys. This paper reviews the recent progress in elucidating the corrosion mechanism, optimizing the composition, and microstructure, enhancing the mechanical performances, and controlling the degradation rate of Mg alloys. In particular, the research progress of surface modification technology of Mg alloys is emphasized. Finally, the development direction of biomedical Mg alloys in the future is prospected.

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Section: Magnesium and Magnesium Alloys For Biomedical Applicationsmentioning

confidence: 99%

A review on magnesium alloys for biomedical applications

Zhang

Wang

Liu

et al. 2022

Front. Bioeng. Biotechnol.

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show abstract

“…The segregation of solute atoms at the interface has a strong pinning effect, which reduces the mobility of the GB and influences the stability of the microstructure [12][13][14]. Segregation atoms affect the bonding strength and properties of the interface structure, and alter the bonding strength [15,16].…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect of multi-element co-segregation on mechanical properties of Mg 101ˉ2 twin grain boundary

Lin

Han

Tian

et al. 2023

Modelling Simul. Mater. Sci. Eng.

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Properties of grain boundaries are pronouncedly influenced by alien elemental segregation. Synergistic effect of co-segregation behavior on mechanical properties of Mg {101̅2} twin grain boundary was systematically investigated with first-principles calculations. Ten elements (Ni, Mn, Zn, Al, Ag, Ti, Li, Zr, Y, Ca) for single segregation and four solute combinations (Al-Ca, Al-Y, Zn-Ca, Zn-Y) for co-segregation were chosen respectively, the segregation energies and solubility energies with different elemental concentrations were calculated to evaluate the thermodynamic stability of corresponding segregated grain boundaries. These solute atoms have unique effects on the stability of the system, and the interaction between solute atoms also has a synergistic effect on the stability of the system. It is found that the segregation tendency is enhanced and the grain boundary structure tends to be stable with the increase of the concentration of solute atoms at the appropriate sites, regardless of single-element segregation or co-segregation. The redistribution of grain boundary charges due to co-segregation significantly affects the binding and mechanical properties of grain boundaries. With the increase of the co-segregation concentration, the lamellar charge is transferred between the matrix and the twins, which further enhances the electron hybridization and leads to a notable enhancement of interface binding. This shows that the appropriate combination of solute elements can effectively improve the mechanical properties of the interface. The manuscript reveals the theoretical understanding of the effect of elemental segregation on the mechanical properties of grain boundary, and provides design ideas for the tuning of mechanical properties of magnesium alloy by grain boundary engineering.

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Fracture Behavior of Low-Pressure Sand-Cast Mg–Gd–Y Magnesium Alloy Under Different Types of Loads

Liu

Tong

et al. 2022

J. of Materi Eng and Perform

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Mechanical properties and deformation mechanisms of a novel fine-grained Mg-Gd-Y-Ag-Zr-Ce alloy with high strength-ductility synergy

Cited by 34 publications

References 54 publications

A review on magnesium alloys for biomedical applications

A review on magnesium alloys for biomedical applications

Synergistic effect of multi-element co-segregation on mechanical properties of Mg 101ˉ2 twin grain boundary

Fracture Behavior of Low-Pressure Sand-Cast Mg–Gd–Y Magnesium Alloy Under Different Types of Loads

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