ALUMINUM BASED ALLOY AND PROCEDURE FOR ITS HEAT TREATMENT

摘要

The invention relates to an aluminum-based alloy, in particular an alloy from the Al-Li-Mg system, with the following chemical composition, %w/w: Lithium ~1.5 - 1.9 Magnesium 4.1 - 6.0 Zinc ~0.1 - 1.5 Zirconium 0.05 - 0.3 Manganese 0.01 - 0.8 Hydrogen ~0.9.times.10 -5 - 4.5.times.10 -5 and at least one element selected from the following group: Beryllium 0.001 - 0.2 Yttrium ~0.01 - 0.5 Scandium ~0.01 - 0.3 Aluminum ~Remainder In addition, the invention relates to a process for heat treating the alloy. The aluminum-based alloy according to the invention is useful as a construction material in aeronautics and aerospace engineering, shipbuilding and mechanical engineering.