Microstructure, Texture, and Mechanical Properties of Alternate <i>α</i>/<i>β</i> Mg–Li Composite Sheets Prepared by Accumulative Roll Bonding

Zhong, Fei; Wang, Tianzi; Wu, Ruizhi; Hou, Linrui; Zhang, Jinghuai; Li, Xin-Lin; Zhang, Milin; Dong, Anping; Sun, Baode

doi:10.1002/adem.201600817

Cited by 16 publications

(3 citation statements)

References 23 publications

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“…The applied stress then remained at a lower level until complete fracture with the highest strain. The phenomenon of the sudden drop of the stress in the stress-strain curves can be commonly observed in the laminates with dissimilar materials [30][31][32]. The applied stress of all the Al-LiFMLs was then transferred to the alloy layers and was considerably reduced.…”

Section: Resultsmentioning

confidence: 99%

Processability and mechanical properties of surface-modified glass-fibres/phthalonitrile composite and Al–Li alloy fibre-metal-laminates

Medjahed

Derradji

Zegaoui

et al. 2019

Materials Science and Technology

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In this study, newly developed fibre-metal laminates (Al-LiFMLs) were prepared by a lay-up process of a high-performance surface-modified glass fibres/phthalonitrile (GFs/PN) composite and Al–Li alloy. The results showed that varying the composite considerably affected the tensile properties of the Al-LiFMLs, as well as exhibiting enhancements over the properties of both the individual Al–Li alloys and GFs/PN composite constituents. For instance, when the number of composite layers varied from 6 to 14, the ultimate tensile strength of the Al-LiFMLs increased from 315 to 611 MPa. It was revealed that the failure mode displayed a more ductile behaviour (up to 20%) for all the developed Al-LiFMLs affected by the ductile fracture mode of the Al–Li alloy. GRAPHICAL ABSTRACT

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Section: Resultsmentioning

confidence: 99%

Processability and mechanical properties of surface-modified glass-fibres/phthalonitrile composite and Al–Li alloy fibre-metal-laminates

Medjahed

Derradji

Zegaoui

et al. 2019

Materials Science and Technology

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“…Thus, affecting a single SE component varies the material's overall shielding performance. The ARB process [44][45][46] has shown a more terrific refinement in the grain size of Mg-Li alloy through dynamic recrystallization owing to aggressive movement of dislocations, as shown in Figure 6. [44] Thus, lowering grain size may increase GB size and alloy electromagnetic wave multiple reflection loss.…”

Section: Grain Boundarymentioning

confidence: 99%

Historical Progress in Electromagnetic Interference Shielding Effectiveness of Conventional Mg Alloys Leading to Mg‐Li‐Based Alloys: A Review

Ashraf,

Guo,

et al. 2023

Adv Eng Mater

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Magnesium‐alloy (Mg‐alloy) materials have attracted considerable attention recently due to their potential applications in electromagnetic interference (EMI) shielding. EMI shielding is a technique to prevent unwanted electromagnetic fields from interfering with the regular operation of electronic devices and systems. EMI shielding is essential for electronics, communication, computers, aerospace, and defence, where high performance and reliability are required. A material’s EMI shielding effectiveness (SE) depends on several factors: its conductivity, magnetic permeability, reflectivity, absorption, and multiple scattering. Mg‐alloys have several advantages over other conventional shielding materials, such as Al‐alloys. These alloys have a lower density, higher specific strength and stiffness, and a higher damping capacity. Mg‐alloys also have high conductivity and magnetic permeability, which can enhance the SE of the material. Moreover, through various methods, such as alloying, heat treatment, surface treatment, and composite fabrication, Mg alloys can be modified to improve their SE and other properties. This review summarizes the recent progress and challenges in developing Mg‐alloy materials for EMI shielding applications. We discuss the effects of different factors on Mg‐alloys’ SE, such as composition, microstructure, frequency, and thickness. Also, we discuss the importance of Mg‐Li alloys and why they are better electromagnetic shielding materials than conventional Mg alloys. Finally, we provide some perspectives and suggestions for future research directions.This article is protected by copyright. All rights reserved.

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“…shielding performance. It is well known that the grain size of Mg-Li alloy can be refined by ARB [15,23,24]. By refining the grain size, a large area of grain boundary can be obtained, so as to increase the multiple reflection loss of the alloy to electromagnetic wave.…”

Section: The Effect Of Grain Boundary On Electromagneticmentioning

confidence: 99%

Enhanced Electromagnetic Interference Shielding in a Duplex-Phase Mg–9Li–3Al–1Zn Alloy Processed by Accumulative Roll Bonding

Wang

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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High electromagnetic shielding performance was achieved in the Mg-9Li-3Al-1Zn alloy processed by accumulative roll bonding (ARB). The microstructure, electromagnetic interference shielding effectiveness (SE) in the frequency of 30-1500 MHz and mechanical properties of the alloy were investigated. A model based on the shielding of the electromagnetic plane wave was used to theoretically discuss the EMI shielding mechanisms of ARB-processed alloy. Results indicate that the SE of the material increases gradually with the increase in the ARB pass. The enhanced SE can be attributed to the obvious microstructure orientation caused by ARB, and the alternative arrangement of alpha(Mg) phase and beta(Li) phase. In addition, with the increase in ARB pass, the number of interfaces between layers increases and the grain orientation of each layer tends to alignment along c-axis, which is beneficial to the reflection loss and multiple reflection loss of the incident electromagnetic wave.

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Microstructure, Texture, and Mechanical Properties of Alternate α/β Mg–Li Composite Sheets Prepared by Accumulative Roll Bonding

Cited by 16 publications

References 23 publications

Processability and mechanical properties of surface-modified glass-fibres/phthalonitrile composite and Al–Li alloy fibre-metal-laminates

Processability and mechanical properties of surface-modified glass-fibres/phthalonitrile composite and Al–Li alloy fibre-metal-laminates

Historical Progress in Electromagnetic Interference Shielding Effectiveness of Conventional Mg Alloys Leading to Mg‐Li‐Based Alloys: A Review

Enhanced Electromagnetic Interference Shielding in a Duplex-Phase Mg–9Li–3Al–1Zn Alloy Processed by Accumulative Roll Bonding

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