商用飞机用铝合金结构材料的发展（续）

Development of Aluminum Alloys Used for the Construction of Commercial Aeroplane

商用飞机用铝合金结构材料的发展（续）李行旦（上海飞机制造厂，上海２００４３６）５亚音速客机候选材料的成本／效益分析虽然，铝合金的品种与状态有了新的发展，但对客机结构材料的选择必须考虑飞机结构的减重与成本效益两方面的问题。原则上，在选用新材料来降低飞机...

In the last thirty years, the achievements in the development of aluminum alloy have brought about remarkable improvements in commercial aeroplane of subsonic speed and supersonic speed. A futher development of Al-alloy will be confronted with the challenge to the growing requirements both in improvemeat of the constructive characters of materials and in enhancement of economical benefit and cycle life. A historical reveiw of alloy used in compressive chief-structure is made in this paper, in the mean time,the high strength Al-alloy 7055 of 7×××series and a new Al-alloy 2××× recently developed by Alcoa are also introduced. The achievements of development of current Al-alloys used for subsonic and supersonic aeroplane are discussed.