Aluminum alloy material, and conductive member, battery member, fastening part, spring part, and structural part using aluminum alloy material

Abstract

This aluminum alloy material has an alloy composition which comprises at least one among 0.05-1.50 mass % of Fe, 0.01-0.15 mass % of Si, 0.01-0.3 mass % of Cu, and 0.01-1.5 mass % of Mg, with the balance being Al and inevitable impurities, and has a fibrous metal structure in which crystal grains extend in one direction. In a cross section parallel to said one direction, the average value of the dimensions of the crystal grains in a direction perpendicular to the longitudinal direction thereof is 800 nm or less, and the primary surface of the aluminum alloy material has a crystal orientation distribution in which the ratio H (K100/K111) of K100 to K111 is at least 0.15 as determined by the X-ray pole figure method, where K100 is the sum of the diffraction intensities resulting from crystals in which <100> is oriented in the longitudinal direction, and K111 is the sum of the diffraction intensities resulting from crystals in which <111> is oriented in the longitudinal direction. The aluminum alloy material has sufficient strength and workability to replace iron-based or copper-based metal materials.