Al-Fe-Ta-Re aluminum alloy, the invention also provides a preparation method of Al-Fe-Ta-Re aluminum alloy, including the following steps: a) casting aluminum alloy ingot; b) the aluminum alloy ingot is homogenized, and the homogenized aluminum alloy ingot is rolled to obtain aluminum alloy rod; c) The aluminum alloy rod obtained in step b is subjected to intermittent annealing treatment; d) The aluminum alloy rod obtained in step c) is aged to obtain aluminum alloy. The invention also provides a power cable. By selecting and controlling the added elements and adopting reasonable preparation technology, the aluminum alloy has better comprehensive properties.
Aluminum alloy is one of the most widely used non-ferrous structural materials in industry. It is widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. With the rapid development of science and technology and industrial economy, the demand of aluminum alloy is increasing day by day, so the research of aluminum alloy is also in-depth. The wide application of aluminum alloy has promoted the development of aluminum alloy in electric power industry, and the development of electric power industry has expanded the application of aluminum alloy.
Power cable is used to transmit and distribute electric energy resources, its basic structure is composed of four parts: core, insulation layer, shielding layer and protective layer. Among them, the wire core is the conductive part of the power cable, used to transport electric energy, it is the main part of the power cable; The insulation layer isolates the core from the earth and the core of different phases in the electrical room to ensure the transmission of electric energy, which is an indispensable part of the power cable structure. The protective layer is to protect the power cable from external impurities and moisture intrusion, and prevent external forces from directly damaging the power cable. Copper is widely used as the core of power cables because of its good electrical conductivity. However, with the increasing shortage of copper resources and the abundant content of aluminum, the substitution of aluminum for copper has attracted the attention of researchers. Therefore, aluminum alloy as a conductor of cable has become a research hotspot.
It is a trend that aluminum alloy power cable replaces copper cable and has been widely used. Aluminum alloy conductor materials in the prior art are excellent in electrical properties, corrosion resistance and mechanical properties, but poor in fatigue resistance, which is prone to quality problems, affecting the service life of aluminum alloy materials or bringing safety risks. Therefore, the comprehensive performance of aluminum alloy power cable is still poor.
