ALUMINIUM BASE-LITHIUM ALLOYS

摘要

A group of alloys, based on aluminum and containing: about 1.0 to 2.8% lithium; an alloying element selected from about 2.5 to 7.0% magnesium or about 4.0 to 7.0% copper and less than about 1.0% of at least one additive element selected from zirconium, chromium, and manganese. These alloys have an improved combination of properties such as strength, ductility and weldability and in some cases improved tensile properties at cryogenic temperatures.