US 12,116,654 B2
Aluminum alloy material, and conductive member, battery member, fastening component, spring component, structural component and cabtire cable each using same
Hiroshi Kaneko, Tokyo (JP)
Assigned to FURUKAWA ELECTRIC CO., LTD., Tokyo (JP)
Appl. No. 17/427,438
Filed by FURUKAWA ELECTRIC CO., LTD., Tokyo (JP)
PCT Filed Jan. 27, 2020, PCT No. PCT/JP2020/002832
§ 371(c)(1), (2) Date Jul. 30, 2021,
PCT Pub. No. WO2020/158682, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 2019-016303 (JP), filed on Jan. 31, 2019.
Prior Publication US 2022/0127700 A1, Apr. 28, 2022
Int. Cl. C22C 21/06 (2006.01); C22F 1/04 (2006.01); C22F 1/047 (2006.01)
CPC C22C 21/06 (2013.01) [C22F 1/047 (2013.01)] 20 Claims
 
1. An aluminum alloy material comprising an alloy composition containing at least one element selected from the group consisting of 0.05 to 1.50 mass % of Fe, 0.01 to 0.15 mass % of Si, 0.01 to 0.30 mass % of Cu and 0.01 to 1.50 mass % of Mg, with a balance being Al and inevitable impurities,
wherein the aluminum alloy material has a fibrous metallic microstructure in which a plurality of crystal grains extend so as to be aligned in one direction, and
wherein, in a cross section parallel to the one direction,
an average value of a maximum dimension in a direction perpendicular to the longitudinal direction of a plurality of the crystal grains is no more than 800 nm, and
viewing the cross section in a thickness direction, when observing at a central part, specific voids having a maximum dimension in a direction perpendicular to the longitudinal direction of no less than 1.0 μm are not present, or an existence number of the specific voids is no more than 10 per 10000 μm2.