Тип публикации: статья из журнала
Год издания: 2019
Идентификатор DOI: 10.17580/tsm.2019.09.10
Ключевые слова: Aluminum, Bar rolling, Combined rolling-pressing, Drawing, Electrical resistance, Electromagnetic mold, Mechanical properties, Rare earth metals, Rods, Wires
Аннотация: The article presents the results of experimental studies of the technology for the production of electrical wire from aluminum alloy 01417 with a content of rare-earth metals (REM) in the range of 7-9%. As the source used the billet with a diameter of 12 mm, obtained by the method of casting in an electromagnetic mold (EMM). The main technological redistribution was hot deformation of this billet using the method of combined rolling-extruding (CRE) with the aim of obtaining a bar with a diameter of 5 mm, and cold deformation using bar rolling and drawing to obtain a wire with a diameter of 0.5 mm. Described deformation modes, methods of experiments and equipment for the implementation of the proposed technology. At all stages of the technology, samples were taken and studies of the mechanical and electrical properties of the obtained deformed semi-finished products (temporary tensile strength, relative elongation and electrical resistivity) were carried out. It was found that the plastic properties of hot-extruded rods obtained by the method of CRE, allow carrying out cold deformation using only one intermediate annealing. The effect of various heat treatment conditions on the mechanical and electrophysical properties of a wire with a diameter of 0.5 mm is studied. Analysis of experimental data revealed that the maximum ductility (temporary tensile strength of 137 MPa and an elongation of 19.1%) for further drawing and the minimum value of electrical resistivity (0.02902 Ohm·mm2/m) has a wire with a diameter of 0.5 mm, obtained by the EMM+CRE technology followed by bar rolling and drawing, annealed at a temperature of 500 °C and a holding time of 1 h. The developed modes of deformation and heat treatment allow to achieve the required values of mechanical properties and electrical conductivity for wire from alloy 01417 in accordance with the technical specifications 1-809-1038-2018. © 2019, "Ore and Metals" Publishing house. All rights reserved.
Журнал: Tsvetnye Metally
Выпуск журнала: Vol. 2019, Is. 9
Номера страниц: 63-68
ISSN журнала: 03722929
Издатель: "Ore and Metals" Publishing house
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