Enhancing electrical conductivity and strength in Al alloys by modification of conventional thermo-mechanical process

Liu, C.H.; Chen, J.; Lai, Y.X.; Zhu, Deju; Gu, Yongqiang; Chen, J.H.

doi:10.1016/j.matdes.2015.07.133

Cited by 57 publications

(20 citation statements)

References 25 publications

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“…Pode-se observar a presença de ligas de alumínio em diversos setores da engenharia, com aplicações nas mais variadas áreas, evidenciando sua ampla utilização (SU; YOUNG, 2019). O uso de alumínio puro, embora possuindo boas propriedades, como a mais alta condutividade elétrica (~ 62% IACS) entre os materiais de Al, é limitado devido à sua baixa resistência (LIU et al, 2015).…”

Section: Revisão Bibliográficaunclassified

Avaliação Da Resistência Elétrica, Mecânica E Termoresistividade Da Liga Al-0,05% Cu-[0,25-0,35]% Fe-0,5% Si-0,6%mg Com Adição De Teor De (0,13)% De Nióbio, Para Transporte E Distribuição De Energia Elétrica / Evaluation of the Electrical, Mechanical Resistance and Thermosistivity of the Alloy AL-0.05% Cu- [0.25-0.35]% FE-0.5% SI-0.6%MG With Addition of (0.13 )% Niobus, for Transport and Distribution of Electricity

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Almeida

Daniel

et al. 2020

BJD

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Section: Revisão Bibliográficaunclassified

Avaliação Da Resistência Elétrica, Mecânica E Termoresistividade Da Liga Al-0,05% Cu-[0,25-0,35]% Fe-0,5% Si-0,6%mg Com Adição De Teor De (0,13)% De Nióbio, Para Transporte E Distribuição De Energia Elétrica / Evaluation of the Electrical, Mechanical Resistance and Thermosistivity of the Alloy AL-0.05% Cu- [0.25-0.35]% FE-0.5% SI-0.6%MG With Addition of (0.13 )% Niobus, for Transport and Distribution of Electricity

Fonseca

Almeida

Daniel

et al. 2020

BJD

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“…Also, the increase of the strength often leads to the decrease of the electrical conductivity, because the solid solute atoms, precipitates, dislocations and grain boundaries that support the high strength are also the main sources of electron scattering [9][10][11]. In order to balance these contradictions and achieve the good match of strength and electrical conductivity, researchers usually adopt the heating treatment to reach the better comprehensive properties of materials, such as artificial aging [12,13], annealing [14][15][16]. However, the several hours' or even several days' heating treatment processing not only restricts the production efficiency but also consumes a lot of energy, which goes against the modern concept of efficient and green low carbon [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…In order to balance these contradictions and achieve the good match of strength and electrical conductivity, researchers usually adopt the heating treatment to reach the better comprehensive properties of materials, such as artificial aging [12,13], annealing [14][15][16]. However, the several hours' or even several days' heating treatment processing not only restricts the production efficiency but also consumes a lot of energy, which goes against the modern concept of efficient and green low carbon [12][13][14][15][16]. Therefore, instead of the traditional high energy consumption long-time heating treatment, the idea of new technology adapting to the low carbon and energy-saving is gradually taking shape.…”

Section: Introductionmentioning

confidence: 99%

On Rough Set Theory on Achieving High Quality Cable Material Production by Green Low Carbon Technology

Shuai

Zhang

et al. 2021

Ecological Chemistry and Engineering S

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As the second largest machinery industry, the energy-intensive cable industry not only creates a lot of economic value but also consumes a lot of energy. It is an inevitable requirement to promote the technological development of the industry in the new era to improve the quality and efficiency and realise industrial energy-saving and consumption reduction. In order to obtain good strength and conductivity, the metal rods of cable are usually heat-treated for several hours or even several days after the rods are extruded, this is a major energy consuming process in traditional production. Based on the background, this study adopted the energy-saving equal-channel angular pressing (ECAP) technology to replace the traditional heating treatment process, and converted the simple heat conduction with thermo-mechanical energy transfer, so as to realise the good strength and conductivity matching of the cable aluminum alloy material. In this study, energy-saving ECAP technology is used to replace the traditional heat treatment process, and heat-mechanical energy transfer is used to replace the simple heat conduction, so as to achieve good strength and conductivity matching of cable aluminum alloy material. The results show that the suitable ECAP process routes can improve the microstructure of aluminum alloy with higher strength and conductivity than the traditional heating process. The research results can be used for technology upgrading and low carbon production in cable industry due to the significantly time reduction of the energy-consuming heat treatment and the high-efficient obtainment of high-quality production.

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“…However, strength and electrical conductivity are usually mutually exclusive in metallic conductive materials. To improve balance of the strength and electrical conductivity of Al-Mg-Si alloys, some attempts have been made on the base of conventional cold-deformation and artificial aging [12][13][14]. For example, Lin et al [13] investigated the effect of pre-aging and re-aging on the strength and conductivity of an Al-Mg-Si alloy, and observed that electrical conductivity improved to 58.9% IACS (International Annealed Copper Standard) while the tensile strength was 301 MPa.…”

Section: Introductionmentioning

confidence: 99%

Optimized Combination of Strength and Electrical Conductivity of Al-Mg-Si Alloy Processed by ECAP with Two-Step Temperature

et al. 2020

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The mechanical properties and electrical conductivity of 6063 aluminum alloy subjected to equal-channel angular press (ECAP) at room temperature (RT), 200 °C, and two-step temperature schedule (TST) have been investigated in this study. The TST refers to one pass at 200 °C followed by further successive pressing at RT. It is shown that this method is effective in obtaining the combination of high strength and electrical conductivity. After two passes, the higher strength can be achieved in TST condition (328 MPa yield strength and 331 MPa ultimate tensile strength), where the changing parameter is processing temperature from the first pass at 200 °C to the second pass at RT, as compared to two passes in RT condition (241 MPa yield strength and 250 MPa ultimate tensile strength) and two passes in 200 °C condition (239 MPa yield strength and 258 MPa ultimate tensile strength). This performance could be associated with grain refinement and nanosized precipitates in TST condition. Moreover, in contrast to RT condition, a higher electrical conductivity was observed in TST condition. It reveals that high strength and electrical conductivity of 6063 aluminum alloy can be obtained simultaneously by ECAP processing in TST condition because of ultrafine-grained microstructure and nanosized precipitates.

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Enhancing electrical conductivity and strength in Al alloys by modification of conventional thermo-mechanical process

Cited by 57 publications

References 25 publications

On Rough Set Theory on Achieving High Quality Cable Material Production by Green Low Carbon Technology

Optimized Combination of Strength and Electrical Conductivity of Al-Mg-Si Alloy Processed by ECAP with Two-Step Temperature

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