Nano-scale precipitates: The key to high strength and high conductivity in Al alloy wire

Hou, J.P.; Wang, Q.; Zhang, Z.J.; Tian, Yanzhong; Wu, Xiaoqing; Yang, H.J.; Li, X.W.; Zhang, Z.F.

doi:10.1016/j.matdes.2017.06.062

Cited by 78 publications

(21 citation statements)

References 44 publications

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“…According to previous studies, excessive second phases may enhance the pinning effect of the second phases and lead to some side effects, such as the deterioration of electrical conductivity. However, the Fe content here was in the range of less than 0.4wt%, and the second phases of the three alloys were fine that the electrical conductivity was only slightly decreased but not deteriorated when the Fe content became higher [23][24][25][26][27][28][29]. Table 2.…”

Section: Tensile Propertiesmentioning

confidence: 83%

Al–Fe–Si–La Alloys for Current Collectors of Positive Electrodes in Lithium Ion Batteries

Yang

Ding

et al. 2020

Metals

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Al–xFe–Si–La alloys (x = 0.07, 0.2, 0.4 wt. %) were designed as current collectors of positive electrodes in lithium ion batteries, and the microstructure, tensile strength, electrical conductivity and corrosion resistance of the alloys were investigated with scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS), a tensile test, an electrical conductivity test, and an electrochemical test. It was found that the amount of Fe content greatly affected the quantity of the second phases in the alloys. The higher the Fe content was, the more the second phases were. With increase of the Fe content, the tensile strength and corrosion resistance of the Al–xFe–Si–La alloys were improved, and the electrical conductivity of the Al–xFe–Si–La alloys could meet the application requirements. Compared to the Al–0.07Fe–0.1Si–0.07La alloy, the strength of the Al–0.4Fe–0.1Si–0.07La alloy was greatly enhanced. The Al–0.4Fe–0.1Si–0.07La alloy also had a higher corrosion potential than that of the Al–0.07Fe–0.1Si–0.07La alloy.

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Section: Tensile Propertiesmentioning

confidence: 83%

Al–Fe–Si–La Alloys for Current Collectors of Positive Electrodes in Lithium Ion Batteries

Yang

Ding

et al. 2020

Metals

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“…In this work, only the effects of trace Fe element (Fe wt.% ≤ 0.2) on Al-xFe-0.07La alloy had been explored. Due to the fact that the tensile strength of Al-0.2Fe-0.07La alloy was enough for the application of aluminum current collector of lithium-ion batteries and more, the Fe element might worsen the electric conductivity of Al-xFe-0.07La alloy according to previous work [9][10][11][12][13][14][15].…”

Section: Discussionmentioning

confidence: 97%

“…A significant proportion of the literature has conducted studies on the Al-Fe-La alloy system, but the content of Fe or La elements in the Al-Fe-La system studied in a lot of the literature is very large. A large content of Fe element may bring about some side effects such as worsening electrical conductivity according to previous work [9][10][11][12][13][14][15]. Therefore, in this work, only the effects of trace Fe content on the strength and corrosion resistance of Al-xFe-0.07La alloy have been studied, so as to determine the effects of different Fe content on Al-xFe-0.07La alloy when the Fe content is very small.…”

Section: Introductionmentioning

confidence: 97%

Tensile Properties and Corrosion Resistance of Al-xFe-La Alloys for Aluminium Current Collector of Lithium-Ion Batteries

Yang

Ding

et al. 2019

Metals

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Al-xFe-La alloys (x = 0.07, 0.1, 0.2) for aluminum current collectors of lithium-ion batteries were prepared and the microstructure of Al-0.07Fe-0.07La, Al-0.1Fe-0.07La and Al-0.2Fe-0.07La aluminum alloys were observed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS). The experimental results showed that with the increase of Fe content, the size of the second phases in Al-xFe-0.07La alloys became finer and more dispersed and that the microstructure of the alloy had improved. The strength and corrosion resistance of Al-xFe-La alloys were studied by tensile tests and electrochemical tests and the morphological investigations of samples were also conducted by SEM and EDS. With the increase of Fe content, the strength and corrosion resistance of Al-xFe-La alloys became better. Compared to Al-0.07Fe-0.07La alloy, the yield strength and tensile strength of the Al-0.2Fe-0.07La alloy increased by 51.19% and 58.48% respectively, and the elongation increased by 88.41%. Moreover, Al-0.2Fe-0.07La alloy had much more positive corrosion potential and much smaller corrosion current than those of Al-0.07Fe-0.07La alloy.

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“…As conductive materials, strength and electrical conductivity are two important parameters closely related to safety and energy-saving against various loads and conductor resistance, respectively [8,9]. Wind load, ice load and dead weight are some common loads that the conductor must be borne during the service.…”

Section: Introductionmentioning

confidence: 99%

Role of Multi-Scale Microstructure in the Degradation of Al Wire for Power Transmission

Liu

et al. 2020

Applied Sciences

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As common conductive materials, Al wires are used on overhead transmission lines under long-term heating conditions. In this study, the strength degradation behavior and the strength-electrical conductivity relation of the commercially pure Al wires (CPAWs) and the Al-Fe wires (AFWs) annealed at various temperatures were investigated based on the microstructure evolution. The strength degradation rate of the AFW is always higher than that of the CPAW. A linear trade-off relation between strength and electrical conductivity for the annealed Al wires are clarified. The results reveal that the mechanisms behind the trade-off relation between the strength and the electrical conductivity for the annealed CPAWs and the annealed AFWs are the recovery of dislocations and the obvious increase of grain width, which leads to the decrease of strength and the increase of electrical conductivity. The coalescence of precipitate in the AFW leads to the obvious decrease of strength, which results in the higher strength degradation rate for the AFW as compared with that for the CPAW. Consequently, the principle of microstructure design for anti-degradation of Al wire is presented.

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Nano-scale precipitates: The key to high strength and high conductivity in Al alloy wire

Cited by 78 publications

References 44 publications

Al–Fe–Si–La Alloys for Current Collectors of Positive Electrodes in Lithium Ion Batteries

Al–Fe–Si–La Alloys for Current Collectors of Positive Electrodes in Lithium Ion Batteries

Tensile Properties and Corrosion Resistance of Al-xFe-La Alloys for Aluminium Current Collector of Lithium-Ion Batteries

Role of Multi-Scale Microstructure in the Degradation of Al Wire for Power Transmission

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