Aluminum alloy conductor, aluminum alloy stranded wire, sheathed wire, wire harness, and method for manufacturing aluminum alloy conductor

Abstract

An aluminum alloy conductor having a high conductivity and a high bending fatigue resistance, and further achieving a high impact absorption property and a high elongation at the same time is provided. An aluminum alloy conductor of the present invention has a composition consisting of Mg: 0.10 mass% to 1.00 mass%, Si: 0.10 mass% to 1.00 mass%, Fe: 0.01 mass% to 1.40 mass%, Ti: 0.000 mass% to 0.100 mass%, B: 0.000 mass% to 0.030 mass%, Cu: 0.00 mass% to 1.00 mass%, Ag: 0.00 mass% to 0.50 mass%, Au: 0.00 mass% to 0.50 mass%, Mn: 0.00 mass% to 1.0 mass%, Cr: 0.00 mass% to 1.00 mass%, Zr: 0.00 mass% to 0.50 mass%, Hf: 0.00 mass% to 0.5 mass%, V: 0.00 mass% to 0.5 mass%, Sc: 0.00 mass% to 0.50 mass%, Ni: 0.00 mass% to 0.10 mass%, and the balance: Al and incidental impurities, wherein a dispersion density of compound particles having a particle size of 20 nm to 1000 nm is greater than or equal to 1 particle / µm 2 .

Description

technical field [0001] The present invention relates to an aluminum alloy conductor used as a conductor of an electrical wiring body. In particular, it relates to an aluminum alloy conductor that achieves high electrical conductivity, high bending fatigue resistance, and high ductility despite being an extremely thin wire. Background technique [0002] At present, as electrical wiring bodies of mobile bodies such as automobiles, trains, and airplanes, or electrical wiring bodies of industrial robots, wires made of copper or copper alloys (such as brass) mounted on wires containing copper or copper alloy conductors are used. A component called a wiring harness, which is a terminal (connector). Recently, the high-performance and high-functionality of automobiles have been rapidly advanced, and the number of installations of various electrical equipment and control equipment in vehicles has increased, and the number of installations of electrical wiring bodies used in these eq...

AI Technical Summary

Problems solved by technology

[0004] However, it is known that pure aluminum such as aluminum alloy conductors for power transmission lines (A1060, A1070 according to JIS standards) generally has poor tensile durability, impact resistance, and bending properties.

Therefore, it cannot withstand, for example, unexpected loads applied by workers, industrial equipment, etc. during installation to the vehicle body, stretching of the crimping parts at the connection parts of wires and terminals, and bending parts such as doors. Repeated stress, etc.

In addition, although materials alloyed by adding various additive elements can increase the tensile strength, sometimes the solid solution phenomenon of the additive elements in aluminum leads to a decrease in electrical conductivity, and the formation of excessive intermetallic compounds in aluminum results in poor performance in wire drawing. Disconnection due to intermetallic compounds occurs in

Images