Alloys with improved performance of toleru00e1ncia Series 2000 damage for aerospace applications

摘要

Alloys with improved performance of toleru00e1ncia Series 2000 damage for aerospace applications.The present invention provides a aluminum alloy series 2000 having improved tolerance to damage, the alloy consisting essentially of about 3.0 - 4.0% by weight of copper; approximately 0.4 - 1.1% by weight of magnesium; up to about 0.8% by weight of silver; up to about 1.0% by weight of Zn; until About 0.25% by weight of Zr; up to about 0.9% by weight of Mn; up to about 0.5% by weight of Fe; and up to about 0.5% by weight of itself; the balance substantially aluminum and incidental impurities elements, said copper and magnesium present in a ratio of about 3.6 to 5 parts of copper to about 1 part of magnesium.The alloy is suitable for use in wrought or cast products including those used in aerospace applications, particularly states the structural sheet or plate, extrusions and forjaduras, and provides an improved combination of resistance and tolerance to damage.