Aluminum alloy member
AssigneeSumitomo Light Metal Industries, Ltd.
InventorsMineo Asano, Yusuke Yamamoto, Toshihiko Fukuda
Life of this patent
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Abstract
An aluminum alloy member is used for joining ends of a sheet-like aluminum alloy member by friction stir welding, and forming an anodic oxidation coating on a weld front surface or a weld back surface, the aluminum alloy member including 0.3 to 1.5 mass % of Mg, 0.2 to 1.2 mass % of Si, 0.5 mass % or less of Cu, and 0.2 mass % or less of Fe, with the balance being Al and unavoidable impurities, Fe-containing second phase particles having a particle size (circle equivalent diameter) of more than 1 μm, among second phase particles dispersed in a matrix of the aluminum alloy member, having an average particle size of 5 μm or less.
Claims2
An aluminum alloy member that is used for joining ends of a sheet-like aluminum alloy member by friction stir welding, and forming an anodic oxidation coating on a weld front surface or a weld back surface, the aluminum alloy member comprising 0.3 to 1.5 mass % of Mg, 0.2 to 1.2 mass % of Si, 0.5 mass % or less of Cu, and 0.2 mass % or less of Fe, with the balance being Al and unavoidable impurities, Fe-containing second phase particles having a particle size (circle equivalent diameter (hereinafter the same)) of more than 1 μm, among second phase particles dispersed in a matrix of the aluminum alloy member, having an average particle size of 5 μm or less.
Dependencies are inferred from the claim text.