High-strength and ductile ultrafine-grained Al–Y–Ni–Co alloy for high-temperature applications

He, Tianbing; Chen, Shuangjian; Lu, Tiwen; Zhao, Panpan; Chen, Weiping; Scudino, Sergio

doi:10.1016/j.jallcom.2020.156655

Cited by 13 publications

(2 citation statements)

References 34 publications

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“…For example, typical low-density Al-based BMGs have occupied a special place in the material research field. Their good ductility and high specific strength, combined with excellent corrosion resistance, make them potentially desirable for integration into the marine, medical, and other fields [ 9 , 10 , 11 , 12 ]. Research has also shown that Mg-Zn alloys often possess good biodegradability, biocompatibility, and mechanical properties [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Construction of Al-Mg-Zn Interatomic Potential and the Prediction of Favored Glass Formation Compositions and Associated Driving Forces

Cai

Wang

et al. 2022

Materials

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An interatomic potential is constructed for the ternary Al-Mg-Zn system under a proposed modified tight-binding scheme, and it is verified to be realistic. Applying this ternary potential, atomistic simulations predict an intrinsic glass formation region in the composition triangle, within which the glassy alloys are more energetically favored in comparison with their solid solution counterparts. Kinetically, the amorphization driving force of each disordered state is derived to correlate the readiness of its glass-forming ability in practice; thus, an optimal stoichiometry region is pinpointed around Al35Mg35Zn30. Furthermore, by monitoring the structural evolution for various (Al50Mg50)1−xZnx (x = 30, 50, and 70 at.%) compositions, the optimized-glass-former Al35Mg35Zn30 is characterized by both the highest degree of icosahedral ordering and the highest phase stability among the investigated compositions. In addition, the icosahedral network in Al35Mg35Zn30 exhibits a much higher cross-linking degree than that in Al25Mg25Zn50. This suggests that there is a certain correlation between the icosahedral ordering and the larger glass-forming ability of Al35Mg35Zn30. Our results have significant implications in clarifying glass formation and hierarchical atomic structures, and in designing new ternary Al-Mg-Zn glassy alloys with high GFA.

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Section: Introductionmentioning

confidence: 99%

Construction of Al-Mg-Zn Interatomic Potential and the Prediction of Favored Glass Formation Compositions and Associated Driving Forces

Cai

Wang

et al. 2022

Materials

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“…The MG plasticity of Al-rich is only 4% (Yang et al, 2009). The tensile ductility is only 5% at high temperature (He et al, 2020). Furthermore, at high temperatures, Al-based MGs have a very narrow supercooled liquid region (SLR) (Yang et al, 2019), resulting in the lack of thermoplastic forming ability compared to Zr and novel metal based MGs (Inoue and Takeuchi, 2011;Lucena et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Improve the Forming Ability of Al-Based Metallic Glass Under Ultrasonic Vibration at Room Temperature

Liang

Fan

et al. 2021

Front. Mater.

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In this work, a rapid and controllable ultrasonic vibration method for forming Al-based metallic glass at room temperature is proposed. This method can dramatically improve the forming ability of Al-based metallic glasses, which are virtually brittle at room temperature and have almost no supercooled liquid region at high temperatures. Under ultrasonic vibration, Al-based metallic glasses exhibited obvious plastic flow, with a maximum deformation degree up to 58% and an average deformation degree up to 43%. It is worth mentioning that no crystalline peaks were found on the X-ray diffraction patterns after deformation under ultrasonic vibration, and the mechanical properties remained the same as the primary sample. The present results provide a new approach for the deformation and forming of Al-based metallic glasses, which can significantly broaden their applications.

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Synthesis by Mechanical Alloying and Characterization Fe73Si22B5 Alloy: Amorphization Evaluation

Nascimento,

de Melo Costa

2023

Braz J Phys

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High-strength and ductile ultrafine-grained Al–Y–Ni–Co alloy for high-temperature applications

Cited by 13 publications

References 34 publications

Construction of Al-Mg-Zn Interatomic Potential and the Prediction of Favored Glass Formation Compositions and Associated Driving Forces

Construction of Al-Mg-Zn Interatomic Potential and the Prediction of Favored Glass Formation Compositions and Associated Driving Forces

Improve the Forming Ability of Al-Based Metallic Glass Under Ultrasonic Vibration at Room Temperature

Synthesis by Mechanical Alloying and Characterization Fe73Si22B5 Alloy: Amorphization Evaluation

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