Enhancement on Al–Mg–Si alloys against failure due to lightning arc occurred in energy transmission lines

The present transmission lines of populous cities will have to be changed with an ability to work at higher temperatures without any weight and cross section changes. Innovative thermal-resistant alloy conductors (T-ACSR) operate in the range of about 150200• C instead of 75 • C which is the standard ACSR type conductor service temperature. In this study, the manufacturing procedure of Al-Zr alloy wire, used as high-temperature conductor wires, have been introduced. The Al-Zr alloy has been cast in a permanent mold than being extruded to a diameter of 10 mm at 400• C. After that the extruded rods have been cold drawn to a diameter of 3.02 mm. Elongation and tensile strength values of the cold drawn wire have been achieved by tensile test at elevated temperatures. Also, microstructural analysis and dispersion hardening procedure have been investigated. The results show that tensile strength and thermal-resistant property are improved by the addition of Zr.

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“…[7,8]. Mechanical properties of the wires were established for a higher demand condition by tensile test at 120…”

Section: Resultsmentioning

confidence: 99%

Manufacturing of Al-Zr Thermal-resistant Alloys for Transmission Lines

2015

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“…These alloys are extensively applied in transportation, building industry and in high-voltage electricity power transmission systems, etc. [5,6]. However, such applications still rely on continuous research and development.…”

Section: Introductionmentioning

confidence: 98%

Mechanical properties and surface characteristics of an AA6060 alloy strained in tension at cryogenic and room temperature

Roven

Jia

2015

Materials Science and Engineering: A

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“…The late stage A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT 3 phases, though less effective than early-stage meta-stable phases regarding strengthening the Al alloys, are preferred to obtain the low residual solutes in Al matrix under over-ageing condition. One method to improve the balance of electrical conductivity and strength is the addition of rare-earth elements or other special element like B, which can retard the coarsening of hardening precipitates and reduce the impurity content in the Al matrix [10,11]. Another category of efforts falls into the introduction of severe plastic deformation to thermo-mechanically, by dynamic ageing for instance, refine the microstructure of Al alloys and promote solutes precipitation [12,13].…”

Section: Introductionmentioning

confidence: 99%