| 摘要 |
PROBLEM TO BE SOLVED: To provide an excess Si type 6000 series Al alloy welded joint which has excellent formability. SOLUTION: In the welded joint for forming, aluminum alloy materials are welded and joined each other, and at least either aluminum alloy material consists of an excess Si type 6000 series aluminum alloy prescribed in AA and JIS standards. After the welding and joining, agining treatment is applied thereto at <=180 deg.C, so that the joint strength in the joined part of the excess Si type 6000 series aluminum alloy material is recovered by >=70% in terms of specific efficiency to the base metal, and the elongation of the joint is recovered by >=50% in terms of specific efficiency to the base metal. |
