Three principles for preparing Al wire with high strength and high electrical conductivity

Hou, J.P.; Li, R.; Wang, Q.; Yu, Hong Yun; Zhang, Z.J.; Chen, Q.Y.; Ma, Huijuan; Wu, Xiaoqing; Li, X.W.; Zhang, Z.F.

doi:10.1016/j.jmst.2018.11.013

Cited by 63 publications

(13 citation statements)

References 48 publications

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“…With regarding to the as-extruded sample, it is clearly seen in Figure 7(a) that the yellow and blue zones cover most of the view area, while the red one occupies a very small proportion with some grains accounting for 78.9% being as substructure along with 19.7% recrystallization microstructure and 1.4% deformation. It is widely reported that Al has high stacking fault energy and the dislocations tend to dynamically recover due to the dominating wavy slip mode in the hot working above the recrystallization temperature of Al (420 °C in this study) [26,27]. However, after T6 heat treatment at 470 °C above the extrusion temperature, the proportion of recrystallization occurrence increases to 53.0%, whereas the substructure region drops to 45.4% as shown in Figure 7(b).…”

Section: Hot-extruded and Heat-treated Microstructural Observationsmentioning

confidence: 58%

Microstructural evolution and mechanical properties of an ultrahigh-strength Al−Zn−Mg−Cu alloy via powder metallurgy and hot extrusion

Chen

Han

et al. 2021

J. Cent. South Univ.

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In this work, a novel ultrahigh-strength Al-10Zn-3.5Mg-1.5Cu alloy was fabricated by powder metallurgy followed by hot extrusion. Investigations on microstructural evolution and mechanical properties of the fabricated samples were carried out. The results show that the grain size of sintered samples matches with the powder particles after ball milling. The relative densities of sintered and hot extruded samples reach 99.1% and 100%, respectively. Owing to the comprehensive mechanism of grain refinement, aging and dispersion strengthening, the ultimate tensile strength, yield strength and elongation of the Al-10Zn-3.5Mg-1.5Cu alloy after hot extrusion and subsequent heat treatment achieve 810 MPa, 770 MPa and 8%, respectively.

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Section: Hot-extruded and Heat-treated Microstructural Observationsmentioning

confidence: 58%

Microstructural evolution and mechanical properties of an ultrahigh-strength Al−Zn−Mg−Cu alloy via powder metallurgy and hot extrusion

Chen

Han

et al. 2021

J. Cent. South Univ.

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“…All aluminum alloy conductors (AAAC) are manufactured by cold drawing to their desired final diameters. There are many studies available in literature aiming to optimize the mechanical and electrical properties of AAACs [ 6 , 7 , 8 , 9 , 10 ]. As typical reductions in the cross-section can exceed 85%, the tensile strength of these metal alloys increases due to work-hardening.…”

Section: Introductionmentioning

confidence: 99%

Electrical Resistivity and Tensile Strength Relationship in Heat-Treated All Aluminum Alloy Wire Conductors

et al. 2021

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Thermal processing of all aluminum alloy conductors (AAAC) is an important step that is performed to enhance the electrical and mechanical properties after the drawing process. In these 6xxx alloys, mechanical strength and electrical conductivity are normally two mutually exclusive properties. With the increased demand for high performance power conductors, it is important to understand and control microstructural evolution processes (e.g., recovery and the formation of nanoscale precipitates) in these alloys for better electrical and mechanical characteristics. In this study, heat treatment was performed on as-drawn 6201 AAAC wire conductors. The variations in tensile strength and electrical resistivity were quantitatively studied as a function of both the treatment temperature and holding time. Two wire diameters commonly used in the manufacturing of medium and high voltage power cables were used: 1.7 mm and 3.5 mm. From the obtained data, significant changes in the electrical resistivity and tensile strength were observed with increasing the treatment time. For both wire diameters, it was observed that the correlation between strength and resistivity can be described by a simple exponential relationship. This link could be useful in predicting mechanical strength by monitoring electrical resistivity variations during industrial heat treatment of AAAC wire conductors.

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“…Electricity is a determining factor for the quality of life in modern society [1], and it is the primary source for most industrial activities [2]. The dynamic economic development in the world has made a direct contribution to increasing energy demand [3], and in the past years, the relation between energy consumption and economic variables has been observed by economists and policymakers [4].…”

Section: Introductionmentioning

confidence: 99%

Factors for Measuring Photovoltaic Adoption from the Perspective of Operators

et al. 2020

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The diffusion of photovoltaic distributed generation is relevant for addressing the political, economic, and environmental issues in the electricity sector. However, the proliferation of distributed generation brings new administrative and operational challenges for the sustainability of electric power utilities. Electricity distributors operate in economies of scale, and the high photovoltaic penetration means that these companies have economic and financial impacts, in addition to influencing the migration of other consumers. Thus, this paper aims to systematically identify and evaluate critical factors and indicators that may influence electricity distributors in predicting their consumers' adoption of photovoltaic technology, which were subjected to the analysis of 20 industry experts. Results show that the cost of electricity, generation capacity, and cost of the photovoltaic systems are the most relevant indicators, and it is possible to measure a considerable part of them using the internal data of the electricity distributors. The study contributes to the understanding of the critical factors for the forecast of the adoption of consumers to distributed photovoltaic generation, to assist the distribution network operators in the decision making, and the distribution sustainability. Also, it establishes the theoretical, political, and practical implications for the Brazilian scenario and developing countries.

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Three principles for preparing Al wire with high strength and high electrical conductivity

Cited by 63 publications

References 48 publications

Microstructural evolution and mechanical properties of an ultrahigh-strength Al−Zn−Mg−Cu alloy via powder metallurgy and hot extrusion

Microstructural evolution and mechanical properties of an ultrahigh-strength Al−Zn−Mg−Cu alloy via powder metallurgy and hot extrusion

Electrical Resistivity and Tensile Strength Relationship in Heat-Treated All Aluminum Alloy Wire Conductors

Factors for Measuring Photovoltaic Adoption from the Perspective of Operators

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