Aluminum alloy with a high toughness for use as plate in aerospace applications

摘要

The present invention is directed to highly controlled alloy composition relationship of a high purity Al-Mg-Cu alloy within the 2000 series aluminum alloys as defined by the Aluminum Association, wherein significant improvements are revealed in fracture toughness through plane strain, fracture toughness through plane stress, fatigue life, and fatigue crack growth resistance.