Damage Tolerance and Durability Evaluation of Aluminium-Lithium Alloys

摘要

New impetus to continued use of aluminum alloys in major structural areas of aircraft has been given by the development of aluminum-lithium alloys. However, qualification of these new materials for service requires extensive testing and evaluation, preferably in international cooperative programs. The evaluation of aluminum-lithium alloys is discussed with particular attention to the balance of properties required to achieve damage tolerant and durable, long-life structures for transport aircraft. An assessment of the current developmental maturity of damage tolerant aluminum-lithium alloys is given.