Atomic-scale icosahedral short-range ordering in a rejuvenated Zr-based bulk metallic glass upon deep cryogenic treatment

Zhu, Yuhui; Zhou, Yongkang; Wang, Aiming; Li, Hong; Fu, Huameng; Zhang, Hongwei; Zhang, Haifeng; Zhu, Zhengwang

doi:10.1016/j.msea.2022.143565

Cited by 18 publications

(3 citation statements)

References 47 publications

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“…At high temperatures, atoms or ions possess higher kinetic energy, promoting their mobility and facilitating diffusion. This enhanced diffusion could lead to atomic rearrangements and the breakdown of long-range order, contributing to the formation of an amorphous structure [22][23][24]. In addition, in the presence of high oxygen content, chemical reactions between oxygen and the material's constituents can occur.…”

Section: Resultsmentioning

confidence: 99%

“…These reactions may involve the formation of oxides, oxygen-rich compounds, or chemical reactions with existing crystalline phases. These chemical transformations disrupt the crystalline lattice and favor the formation of an amorphous structure by making the energy required to maintain a crystalline structure unfavorable [23,25]. The lattice parameter, crystallite size, and hardness of the CrZrON coatings were evaluated to understand the influence of the O2/(O2 + N2) gas flow ratio and deposition temperature on their structural and mechanical properties, as shown in Figure 3.…”

Section: Resultsmentioning

confidence: 99%

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Structural and Thermal Stability of CrZrON Coatings Synthesized via Reactive Magnetron Sputtering

Kim

Lee

2023

Coatings

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This research manuscript investigates the structural and thermal stability of CrZrON coatings synthesized through reactive magnetron sputtering. The coatings were deposited at different temperatures with 120 °C and 400 °C, and with varying oxygen-to-reactive gas ratios in the range of 8.3% to 25.7%. The average chemical composition, crystallographic orientation, microstructure, lattice parameter, crystallite size, and hardness of the coatings were evaluated. The results revealed that the coatings deposited at a lower temperature of 120 °C exhibited a columnar structure, while those deposited at a higher temperature of 400 °C showed a transition towards a featureless or amorphous structure. The lattice parameter and crystallite size were influenced by the deposition temperature and oxygen ratio, indicating the incorporation of oxygen into the coatings. Hardness measurements demonstrated that the coatings’ hardness decreased from 33.7 GPa to 28.6 GPa for a process temperature of 120 °C and from 32.1 GPa to 25.7 GPa for 400 °C with an increase in the oxygen ratio, primarily due to the formation of oxygen-rich compounds or oxides. Additionally, annealing experiments indicated that the coatings with featureless or amorphous structures exhibited improved thermal stability, as they maintained their structural integrity without delamination even at high annealing temperatures.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Structural and Thermal Stability of CrZrON Coatings Synthesized via Reactive Magnetron Sputtering

Kim

Lee

2023

Coatings

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“…Compared to crystalline materials, amorphous alloys have unique characteristics in their microstructure and structure. Their atoms are no longer arranged in a periodic long-range order, and they are free of crystal defects such as grain boundaries and dislocations in crystalline alloy materials [1][2][3][4], which has been widely concerned by researchers [5][6][7][8]. This structure endows it with unique physical and chemical properties, such as high strength, high hardness, high wear resistance, low elastic modulus, and strong corrosion resistance, and makes it have good application prospects in the fields of military equipment, aerospace, marine engineering, medicine, biology, electronic information, and other fields [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Effect of isothermal annealing temperature on microstructure and mechanical properties of Cu₄₅Zr₄₅Ag₇Al₃ amorphous alloy

Zhang

Liu

Zhang

et al. 2023

Mater. Res. Express

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Bulk amorphous alloys, as a material with broad application prospects, are highly expected in many cutting-edge applications. However, its plastic deformation relies on highly localized shear bands, resulting in brittle fracture characteristics of materials with low plastic strain as a whole. Therefore, strengthening and toughening of amorphous alloys is one of the key topics in the research of amorphous applications. In this paper, the effects of different isothermal annealing temperature on the microstructure and uniaxial compression properties of Cu45Zr45Ag7Al3 amorphous alloy were studied by means of differential scanning calorimetry (DSC), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results show that Cu10Zr7, AlCu2Zr, Cu8Zr3 and Al2Zr phases precipitated successively from the amorphous alloy matrix with the increase of annealing temperature，and the fracture strength and plastic strain increased first and then decreased; At an isothermal annealing temperature of 741 K, the precipitated nanocrystalline Cu10Zr7 phase can improve the fracture strength of the alloy; when the annealing temperature rises to 746 K, the strength of the alloy decreases slightly, but the plasticity increases; with the continuous increase of annealing temperature, the plasticity of the alloy decreases and the strength continues to increase; As the annealing temperature continues to increase, the fracture strength of the alloy decreases, exhibiting significant brittle fracture characteristics.

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Enhancing the Energy State and Plasticity of Relaxed Cu49Hf42Al9 Bulk Metallic Glass by Rejuvenation

Jia,

Liu,

Wang

et al. 2024

Met. Mater. Int.

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Atomic-scale icosahedral short-range ordering in a rejuvenated Zr-based bulk metallic glass upon deep cryogenic treatment

Cited by 18 publications

References 47 publications

Structural and Thermal Stability of CrZrON Coatings Synthesized via Reactive Magnetron Sputtering

Structural and Thermal Stability of CrZrON Coatings Synthesized via Reactive Magnetron Sputtering

Effect of isothermal annealing temperature on microstructure and mechanical properties of Cu₄₅Zr₄₅Ag₇Al₃ amorphous alloy

Enhancing the Energy State and Plasticity of Relaxed Cu49Hf42Al9 Bulk Metallic Glass by Rejuvenation

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Atomic-scale icosahedral short-range ordering in a rejuvenated Zr-based bulk metallic glass upon deep cryogenic treatment

Cited by 18 publications

References 47 publications

Structural and Thermal Stability of CrZrON Coatings Synthesized via Reactive Magnetron Sputtering

Structural and Thermal Stability of CrZrON Coatings Synthesized via Reactive Magnetron Sputtering

Effect of isothermal annealing temperature on microstructure and mechanical properties of Cu45Zr45Ag7Al3 amorphous alloy

Enhancing the Energy State and Plasticity of Relaxed Cu49Hf42Al9 Bulk Metallic Glass by Rejuvenation

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Effect of isothermal annealing temperature on microstructure and mechanical properties of Cu₄₅Zr₄₅Ag₇Al₃ amorphous alloy