| 摘要 |
PROBLEM TO BE SOLVED: To provide a high strength automobile aluminum alloy forged material.SOLUTION: An automobile aluminum alloy forged material 1 contains Si:0.7 to 1.5 mass%, Fe:0.5 mass% or less, Cu:0.1 to 0.6 mass%, Mg:0.6 to 1.2 mass%, Ti:0.01 to 0.1 mass%, Mn:0.25 to 1.0 mass%, Zn: limited to 0.05 mass% or less, further at least one kind selected from a group consisting of Cr:0.1 to 0.4 mass% and Zr:0.01 to 0.2 mass%, a hydrogen amount: limited to 0.25 ml/100 g Al or less, and the balance Al with inevitable impurities, and has an area ratio of a <111> aggregate texture in a cross section parallel to an extrusion direction, of 60% or more. |
