COPPER ALLOY MATERIAL AND PRODUCTION METHOD OF THE SAME

To provide copper alloy material having high electric conductivity and high tensile strength, and furthermore having small Young's modulus anisotropy and excellent bending workability, and a production method of the same.SOLUTION: Copper alloy material having multi-phase structure including a fist phase that is a copper mother phase, and a plurality of second phases extending toward a rolling direction, a second phase in which when viewed in a cross-section in a longitudinal direction including a rolling direction of the copper alloy material, a length L measured along the rolling direction of the second phase is 1 μm or longer satisfies the following requirement (I) to (III). Requirement (I): the average value of the phase intervals between adjacent specific second phases along plate thickness direction of the copper alloy material is in the range of 5 nm or larger and 50 nm or smaller. Requirement (II): the average value of the extending angles of the specific second phases with respect to the rolling direction is in the range of 3° or larger and 20°or smaller at the position on a vertical line drawn in the thickness direction of the copper alloy material. Requirement (III): the average value of the differences between the extending angles between the adjacent specific second phases relative to the rolling direction is 5°or smaller at a position on a vertical line drawn in the plate thickness direction of the copper alloy material.SELECTED DRAWING: Figure 1 【課題】高い導電率と高い引張強度を有しながらも、ヤング率の異方性が少なく、曲げ加工性にも優れた銅合金材およびその製造方法を提供する。【解決手段】Ｃｕ母相である第１相と、圧延方向に向かって延在する複数の第２相とを含む複相組織を有する銅合金材であって、銅合金材の圧延方向を含む長手方向の断面で見て、第２相のうち圧延方向に沿って測定したときの長さＬが１μｍ以上である第２相は、下記の要件（Ｉ）〜（ＩＩＩ）を満足する。要件（Ｉ）：銅合金材の板厚方向に沿って、隣接する特定第２相同士の相間隔の平均値が、５ｎｍ以上５０ｎｍ以下の範囲である。要件（ＩＩ）：銅合金材の板厚方向に引いた垂線上の位置にて、圧延方向に対する特定第２相の延在角度の平均値が３°以上２０°以下の範囲である。要件（ＩＩＩ）：銅合金材の板厚方向に引いた垂線上の位置にて、圧延方向に対する、隣接する特定第２相の延在角度の差の平均値が５°以下である。【選択図】図１