公开(公告)号：EP0587274A1

公开(公告)日：1994-03-16

申请号：EP93305186.4

申请日：1993-07-01

Applicant: REYNOLDS METALS COMPANY

Inventor： Anderson, Kevin R.

IPC: C22C21/10 ,  C22F1/053

CPC classification number: C22F1/053 ,  C22C21/10

Abstract: A method of producing an aluminum-based alloy product having improved exfoliation resistance and fracture toughness which comprises providing an aluminum-based alloy composition consisting essentially of about 5.5-10.0 % by weight of zinc, about 1.75-2.6 % by weight of magnesium, about 1.8-2.75 % by weight of copper with the balance aluminum and other elements. The aluminum-based alloy is worked, heat treated, quenched and aged to produce a product having improved corrosion resistance and mechanical properties. The amounts of zinc, magnesium and copper are stoichiometrically balanced such that after precipitation is essentially complete as a result of the aging process, no excess elements are present. The method of producing the aluminum-based alloy product utilizes either a one- or two-step aging process in conjunction with the stoichiometrically balancing of copper, magnesium and zinc.

Abstract translation: 铝系合金产品的制造方法具有改善的耐剥离性和断裂韧性，其包括铝基合金组合物重量的锌基本上由约5.5-10.0％的提供，约1.75-2.6％重量的镁，约 1.8-2.75％（重量）铜的其余为铝和其他元素。 铝基合金加工时，进行处理，淬火和老化以产生产物热具有提高的耐腐蚀性和机械性能。 锌，镁和铜的量是化学计量平衡的搜索没有沉淀完全实质上作为老化过程的结果后，没有多余的元件存在。 生产铝基合金产品的方法，既可采用单组分或双步骤用铜，镁和锌的化学计量平衡连词老化过程。