Abstract: An aluminum-alloy sheet has a chemical composition containing Si: 2.3-3.8 mass %, Mn: 0.35-1.05 mass %, Mg: 0.35-0.65 mass %, Fe: 0.01-0.45 mass %, and at least one element selected from the group consisting of Cu: 0.0010-1.0 mass %, Cr: 0.0010-0.10 mass %, Zn: 0.0010-0.50 mass %, and Ti: 0.0050-0.20 mass %. The ratio of the Si content to the Mn content is 2.5 or more and 9.0 or less. The aluminum-alloy sheet exhibits an elongation of 23% or more and a strain hardening exponent of 0.28 or more at a nominal strain of 3%. Such an aluminum-alloy sheet is well suited for press forming (stamping) applications, such as forming automobile body panels.

Abstract: The present disclosure shows a superplastic-forming aluminum alloy plate that has excellent properties for superplastic-forming, such as blow forming, and that has excellent surface properties after forming. Shown is a superplastic-forming aluminum alloy plate and a production method therefor, the superplastic-forming aluminum alloy plate being characterized by comprising an aluminum alloy which contains 2.0 to 6.0 mass % Mg, 0.5 to 1.8 mass % Mn and 0.40 mass % or less Cr and in which the balance consists of Al and unavoidable impurities, wherein the unavoidable impurities are restricted to have 0.20 mass % or less Fe and 0.20 mass % or less Si, the 0.2% proof stress is 340 MPa or more, and the density of intermetallic compounds having an equivalent circular diameter of 5 to 15 ?m at the RD-TD plane which extends along the center of the plate cross-section is 50 to 400 pieces/mm2.

Abstract: The present disclosure shows a superplastic-forming aluminum alloy plate that has excellent properties for superplastic-forming, such as blow forming, and that has excellent surface properties after forming. Shown is a superplastic-forming aluminum alloy plate and a production method therefor, the superplastic-forming aluminum alloy plate being characterized by comprising an aluminum alloy which contains 2.0 to 6.0 mass % Mg, 0.5 to 1.8 mass % Mn and 0.40 mass % or less Cr and in which the balance consists of Al and unavoidable impurities, wherein the unavoidable impurities are restricted to have 0.20 mass % or less Fe and 0.20 mass % or less Si, the 0.2% proof stress is 340 MPa or more, and the density of intermetallic compounds having an equivalent circular diameter of 5 to 15 ?m at the RD-TD plane which extends along the center of the plate cross-section is 50 to 400 pieces/mm2.

Abstract: Shown is a superplastic-forming aluminum alloy plate and a production method therefor, the superplastic-forming aluminum alloy plate being characterized by comprising an aluminum alloy which contains 2.0 to 6.0 mass % Mg, 1.2 to 1.5 mass % Mn and 0.001 to 0.05 mass % Cr and in which the balance consists of Al and unavoidable impurities, wherein the unavoidable impurities are restricted to have 0.20 mass % or less Fe and 0.20 mass % or less Si, the 0.2% proof stress is 340 MPa or more, and the density of intermetallic compounds having an equivalent circular diameter of 5 to 15 ?m at the RD-TD plane which extends along the center of the plate cross-section is 50 to 400 pieces/mm2, and a frequency of Kernel Average Misorientation of 15° or less at the RD-TD plane which extends along the center of the plate cross-section is 0.34 or less.

Abstract: An aluminum-alloy sheet has a chemical composition containing Si: 2.3-3.8 mass %, Mn: 0.35-1.05 mass %, Mg: 0.35-0.65 mass %, Fe: 0.01-0.45 mass %, and at least one element selected from the group consisting of Cu: 0.0010-1.0 mass %, Cr: 0.0010-0.10 mass %, Zn: 0.0010-0.50 mass %, and Ti: 0.0050-0.20 mass %. The ratio of the Si content to the Mn content is 2.5 or more and 9.0 or less. The aluminum-alloy sheet exhibits an elongation of 23% or more and a strain hardening exponent of 0.28 or more at a nominal strain of 3%. Such an aluminum-alloy sheet is well suited for press forming (stamping) applications, such as forming automobile body panels.

Abstract: The present disclosure relates to an aluminum alloy sheet having excellent ridging resistance and excellent hem bendability. The aluminum alloy sheet is an aluminum alloy rolled material for molding. The aluminum alloy rolled material includes an aluminum alloy that includes predetermined amounts of Mg, Si, and Mn and satisfies a condition of 0.005?Mn+Cr?0.080 mass %. In the aluminum alloy sheet, the position of a middle (t/2) of a sheet thickness is regarded as a center, the crystal particle diameter d1 of an L-LT plane in a sheet thickness in a range of ±(t/8) from the center is 30 to 80 ?m, the crystal particle diameter d2 of an L-ST plane in the entire sheet thickness is 60 ?m or less, and the cube orientation area rate C of a crystal orientation on a sheet surface is 10% or more.

Abstract: The present disclosure shows a superplastic-forming aluminum alloy plate that has excellent properties for superplastic-forming, such as blow forming, and that has excellent surface properties after forming. Shown is a superplastic-forming aluminum alloy plate and a production method therefor, the superplastic-forming aluminum alloy plate being characterized by comprising an aluminum alloy which contains 2.0 to 6.0 mass % Mg, 0.5 to 1.8 mass % Mn and 0.40 mass % or less Cr and in which the balance consists of Al and unavoidable impurities, wherein the unavoidable impurities are restricted to have 0.20 mass % or less Fe and 0.20 mass % or less Si, the 0.2% proof stress is 340 MPa or more, and the density of intermetallic compounds having an equivalent circular diameter of 5 to 15 ?m at the RD-TD plane which extends along the center of the plate cross-section is 50 to 400 pieces/mm2.