Effects of natural aging and pre-aging on the strength and electrical conductivity in Al-Mg-Si AA6201 conductor alloys

Khangholi, Siamak Nikzad; Javidani, Mousa; Maltais, Alexandre; Chen, X.-Grant

doi:10.1016/j.msea.2021.141538

Cited by 49 publications

(23 citation statements)

References 38 publications

(93 reference statements)

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“…A relative elongation of samples meets the requirements imposed on wires from heat-resistant Al alloys and exceeds 2% [9]. It is important to note that an Al-1.17Mg-0.35Zr wire in the UFG state has higher strength than those in the wires made of Al-Mg-Si alloys both after conventional treatment and after TMT including SPD [2][3][4][5].…”

Section: Resultsmentioning

confidence: 99%

“…Their divergence is no more than 3%. The level of strength and electrical conductivity achieved in the composite wire is comparable and even exceeds similar properties in the conductors made of Al-Mg-Si [2][3][4][5].…”

Section: Strength Electrical Conductivity and Thermal Resistance Of A...mentioning

confidence: 93%

“…A wire made of these alloys is generally applied in electrical cables and can exhibit an ultimate tensile strength up to 342 MPa with an electrical conductivity of 51.5% IACS [2]. New approaches to thermomechanical treatment of these alloys have been recently proposed, including the use of severe plastic deformation (SPD) techniques [3][4][5]. The formation of special microstructures provided by new schemes and regimes of TMT allowed for achieving an ultimate tensile strength (σ UTS ) over 350 MPa with an electrical conductivity of 53.0-56.5% IACS in Al-Mg-Si alloys.…”

Section: Introductionmentioning

confidence: 99%

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Strength, thermal resistance and electrical conductivity of aluminum-based composite wire

Murashkin

Садыков

Mavlyutov

et al. 2022

J. Phys.: Conf. Ser.

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In this work, we demonstrate the possibility of producing a composite high strength and thermal resistant Al-based wire with ultrafine-grained (UFG) structure. Such composite wire consists of two aluminum alloys. Its clad is made of Al-1.17Mg-0.35Zr (wt.%) alloy, and the core is of Al-0.4Zr (wt.%). The specimens of Al alloys separately and as parts of a composite wire were subjected to thermomechanical treatment (TMT) that included annealing at 400°C, equal-channel angular pressing via “Conform” scheme (ECAP-C) and cold drawing (CD). The ratio between the core and clad materials in the composite wire was determined experimentally as well as calculated from the rule of mixtures (additivity). It has been shown that, an ultimate tensile strength over 360 MPa and a long-term operation temperature of 150°C can be achieved in a composite wire at a rational ratio between the chosen aluminum alloys with the UFG structures. Such combination of strength and thermal resistance is accompanied with an electrical conductivity of no less than 50% IACS in a composite wire.

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Section: Resultsmentioning

confidence: 99%

Section: Strength Electrical Conductivity and Thermal Resistance Of A...mentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Strength, thermal resistance and electrical conductivity of aluminum-based composite wire

Murashkin

Садыков

Mavlyutov

et al. 2022

J. Phys.: Conf. Ser.

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“…The predominant fabrication process of the redraw rods is by means of Properzi continuous casting followed by a hot rolling process (Fig. 2 ) [ 37 ]. In the process, once the target chemical composition is achieved, the molten metal is further treated inside the furnace by adding an appropriate grain refiner and modifier (such as Al-Ti-B and Al-B master alloys).…”

Section: Fabrication Processes Of 6xxx Electrical Conductorsmentioning

confidence: 99%

“…Production chain of Properzi process followed by wire drawing and aging treatment for aluminum conductive cables Reprinted with permission from [ 37 ].…”

Section: Figurementioning

confidence: 99%

Review on recent progress in Al–Mg–Si 6xxx conductor alloys

Khangholi

Javidani

Maltais³

et al. 2022

Journal of Materials Research

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Improvement Mechanism of Thermal Conductivity in T6/T7‐Treated Al–Si–Mg Cast Alloy: Experimental Studies and Density Functional Theory Calculations

et al. 2022

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In this article, high strength and high thermal conductivity are achieved in T6/T7‐treated Al–9%Si–0.8%Mg alloy. The improvement mechanism of thermal conductivity is discussed by experimental studies and density functional theory calculations. The experimental results indicate that the T7‐treated Al–9%Si–0.8%Mg alloy shows the good overall performances: thermal conductivity of 177.34 W m−1K−1, yield strength of 288 MPa, tensile strength of 314 MPa, and elongation of 9.63%. The β″ precipitates at peak‐aged condition show higher strengthening effect than that of β′ at overaged condition, while the overaged condition is more favorable for improvement of thermal conductivity. The decrease in concentration of solution atoms by precipitation of β″ and β′ enhances periodic field of localized matrix lattice and increases the relaxation time of free electrons in the localized lattice. The decrease in concentration of solution atoms and increase in the number density of β″ and β′ precipitates not only markedly strengthen the mechanical properties but also reduce the scattering positions in Al lattice, resulting in the improvement of thermal conductivity.

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Effects of natural aging and pre-aging on the strength and electrical conductivity in Al-Mg-Si AA6201 conductor alloys

Cited by 49 publications

References 38 publications

Strength, thermal resistance and electrical conductivity of aluminum-based composite wire

Strength, thermal resistance and electrical conductivity of aluminum-based composite wire

Review on recent progress in Al–Mg–Si 6xxx conductor alloys

Improvement Mechanism of Thermal Conductivity in T6/T7‐Treated Al–Si–Mg Cast Alloy: Experimental Studies and Density Functional Theory Calculations

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