| 摘要 |
The present invention provides an aluminum alloy component having an anodic oxide film less causing cracks and high in surface smoothness, which is capable of reducing abrasion of a cutting tool regardless of the excellent machinability. The aluminum alloy component (1) has an anodic oxide film formed on a surface of a base metal of an aluminum alloy. The aluminum alloy consists of Fe: 0.5 to 2 mass %, Cu: 0. 35 to 0. 6 mass%, Mg: 0. 35 to 1.3 mass%, Si: 0.2 to 1.3 mass%, Cr: 0.005 to 0.3 mass %, Mn: 0.01 to 0.3 mass %, Ti: 0.005 to 0.1 mass %, and the balance being inevitable impurities, wherein Zn is controlled to be less than 0.25 mass%, and wherein Al-Fe series crystals and Al-Fe-Si series crystals having a maximum grain diameter of 30 µm or less exist in the anodic oxide film in a dispersed manner with an average center-to-center distance of 10 to 100 µm, and a percentage of a total occupied area of the Al-Fe series crystals and Al-Fe-Si series crystals in the anodic oxide film is 5% or more. |
