| 摘要 |
<p>An Al-Mg-Si-based high-strength aluminum alloy extruded shape exhibits excellent corrosion resistance and ductility, and exhibits excellent hardenability during extrusion (i.e., ensures high productivity). A method for producing the same is also disclosed. The high-strength aluminum alloy extruded shape includes 0.65 to 0.90 mass% of Mg, 0.60 to 0.90 mass% of Si, 0.20 to 0.40 mass% of Cu, 0.20 to 0.40 mass% of Fe, 0.10 to 0.20 mass% of Mn, and 0.005 to 0.1 mass% of Ti, with the balance being Al and unavoidable impurities, the aluminum alloy, extruded shape having a stoichiometric Mg 2 Si content of 1.0 to 1.3 mass%, an excess Si content relative to stoichiometric Mg 2 Si of 0.10 to 0.30 mass%, and a total content of Fe and Mn of 0.35 mass% or more.</p> |
