Aluminum alloy material, and electroconductive member, battery member, fastening component, spring component, structural component and cabtyre cable each using same

Abstract

Provided is an aluminum alloy material which has high proof stress and excellent electric and thermal conductivity and can have a constant breaking elongation even when the aluminum alloy material has a small diameter. The aluminum alloy material according to the present invention is characterized by having an alloy composition comprising 0.05 to 1.50% by mass of Fe, at least one of 0.01 to 0.15% by mass of Si, 0.01 to 0.30% by mass of Cu and 0.01 to 1.50% by mass of Mg, and a remainder made up by Al and unavoidable impurities, and also having a fibrous metallic structure in which a plurality of crystal grains extend in line in one direction, wherein the average value of largest dimensions of the plurality of crystal grains in a direction orthogonal to the length direction is 800 nm or less in a cross section parallel to the aforementioned one direction, and there is no specific void of which the largest dimension in a direction orthogonal to the length direction is 1.0 mum or more as observed at a center part of the cross section in the thickness direction or the abundance of the specific voids is 10 or less per 10000 mum<2>.

Description

technical field [0001] The invention relates to an aluminum alloy material, in particular to an aluminum alloy material with high strength and excellent processability. Such an aluminum alloy material can be used in a wide range of applications (for example, conductive members, members for batteries, fastening members, members for springs, members for structures, rubber-insulated cables, etc.). Background technique [0002] In recent years, techniques have been developed to shape thin metal wires into three-dimensional structures by twisting, knitting, weaving, tying, splicing, joining, and the like. Such a method has been studied, for example, as a wire-woven honeycomb material (Wire-Woven Cellular Materials), and applications to battery components, heat sinks, impact-absorbing members, and the like are expected. [0003] In addition, iron-based and copper-based wire materials are widely used as the above-mentioned metal thin wires, but recently, replacements with aluminum...

AI Technical Summary

Problems solved by technology

However, the elongation at break, strength and conductivity are generally opposite characteristics, so it is not easy to improve all of the strength, conductivity and elongation at break.

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