Title:
COLD-ROLLED ALUMINUM ALLOY SHEET AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
Japanese Patent JP2023160496
Kind Code:
A
Abstract:
To provide a cold-rolled aluminum alloy sheet that is resistant to the deterioration of strength due to impurities Si, and a method for producing the same.SOLUTION: A cold-rolled aluminum alloy sheet has a composition containing 0.15 to 0.40 mass% of Si, 0.30 to 0.80 mass% of Fe, 0.10 to 0.50 mass% of Cu, 0.80 to 1.20 mass% of Mn, and 0.50 to 1.70 mass% of Mg and optionally containing, as optional elements, 0.30 mass% or less of Zn and 0.15 mass% or less of Ti, with the remainder being Al and unavoidable impurities. In the cold-rolled aluminum alloy sheet, the content ratio, expressed in mass%, of Fe to Si is within the range represented by the formula: 1.97≤Fe/Si≤4.00, the (amount of solid-solubilized Mn)/(total amount of Mn) ratio is 0.17 or more, the amount of solid-solubilized Si is 0.03 mass% or less, and a peak ratio I (18.26°±0.1°)/I(22.45°±0.1°) between a diffraction intensity I at a bragg angle (2θ±0.2°) of 18.26°±0.1° and a diffraction intensity I at a bragg angle (2θ±0.2°) of 22.45°±0.1° in an X-ray diffraction pattern is 0.11 or more.SELECTED DRAWING: None
Inventors:
EZAKI TOMOTARO
KUDO TOMOYUKI
TANAKA HIROKI
KUDO TOMOYUKI
TANAKA HIROKI
Application Number:
JP2022070902A
Publication Date:
November 02, 2023
Filing Date:
April 22, 2022
Export Citation:
Assignee:
UACJ CORP
International Classes:
C22C21/00; C22C21/06; C22F1/04; C22F1/047
Attorney, Agent or Firm:
Seiji Okuda
Shuichi Kita
Shigeyasu Murase
Shuichi Kita
Shigeyasu Murase