Aluminum alloy conductor, aluminum alloy stranded wire, covered electric wire, wire harness, and manufacturing method of aluminum alloy conductor

Abstract

The present invention provides, especially when used as an ultra-thin wire with a bundle diameter of 0.5mm or less, while ensuring strength, elongation, and electrical conductivity at the same level as existing products, and improving impact resistance and bending fatigue resistance. Aluminum alloy conductors used as conductors of electrical wiring bodies, etc. The aluminum alloy conductor of the present invention has the following chemical composition: Mg: 0.10-1.00 mass%, Si: 0.10-1.00 mass%, Fe: 0.01-1.40 mass%, Ti: 0.000-0.100 mass%, B: 0.000-0.030 mass% , Cu: 0.00-1.00 mass%, Ag: 0.00-0.50 mass%, Au: 0.00-0.50 mass%, Mn: 0.00-1.00 mass%, Cr: 0.00-1.00 mass%, Zr: 0.00-0.50 mass%, Hf : 0.00 to 0.50% by mass, V: 0.00 to 0.50% by mass, Sc: 0.00 to 0.50% by mass, Co: 0.00 to 0.50% by mass, Ni: 0.00 to 0.50% by mass, balance: Al and unavoidable impurities, in A precipitation-free zone exists in the crystal grain, and the width of the above-mentioned precipitation-free zone is 100 nm or less.

Description

technical field [0001] The present invention relates to an aluminum alloy conductor used as a conductor of an electric wiring body, an aluminum alloy stranded wire, a covered electric wire, a wire harness, and a method for manufacturing an aluminum alloy wire, and particularly relates to an extremely thin wire having a wire bundle diameter of 0.5 mm or less In this case, it is also possible to ensure the same level of strength, elongation, and electrical conductivity as existing products, and to improve the impact resistance and bending fatigue resistance of the aluminum alloy conductor. 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 alloy (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 hig...

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Problems solved by technology

In addition, Patent Document 1 describes that it has excellent bending properties because it has sufficient elongation. However, for example, when aluminum alloy wires are used as wire harnesses attached to doors, etc., repetitions occur due to opening and closing of doors. Bending stress, impact resistance and bending fatigue resistance in use environments prone to fatigue damage are not disclosed or implied

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