| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide aluminum alloy material having light weight, high strength and capable of being produced at a low cost, and a production method thereof.SOLUTION: The aluminum alloy material contains 0.05 mass% to 0.5 mass% of Si, 0.05 mass% to 0.5 mass% of Fe, 0.3 mass% to 2.0 mass% of Cu, 0.3 mass% to 2.0 mass% of Mn, 0.5 mass% to 3.0 mass% of Mg, 0.05 mass% to 0.3 mass% of Zr and the balance aluminum with inevitable impurities, the metallic structure of the aluminum alloy material consists of recrystallization structure and a crystal particle diameter of the recrystallization structure in a cross section perpendicular to an extrusion direction of the aluminum alloy material is 10μm to 150μm as an equivalent circle diameter.</p> |
