What is the application of aluminum in the aviation field?

Wang Yawei, director of the Civil Aircraft Department of China Aviation Industry Corporation, gave a brief introduction to the application of aluminum in the aviation field at the 2005 China Transportation Aluminum International Conference: Aluminum alloys are generally divided into four generations, the first generation 7075, 2024, used in the first-generation regional passenger aircraft before the 1980s. Since the 1980s, with the development of aluminum alloy technology, the second-generation aluminum alloys 7050, 7475, 7175, 2124, 2224, and 2324, which have significantly improved performance, have been used in second- and third-generation regional passenger aircraft successively. The third-generation new aluminum alloy 7150-T77, 7055-T77, 7085 high-strength, high-toughness, and 2524-T3 damage-tolerant aluminum alloy has been widely used in large civil airliners such as Boeing 777 and A380, but it has not been found on regional airliners. application. Traditional aluminum alloys such as LY12 (equivalent to U.S. 2024) and LC4 (equivalent to U.S. 7075) used in regional passenger aircrafts such as domestic transport 7 (including Xinzhou 60), transport 8, and transport 10 can still be supplied independently in China, but performance As far as the second-generation aluminum alloys have been greatly improved, China is currently basically in the development stage of high-purity aluminum alloys such as 2124 and 7050. Some key technologies have not broken through the limitations of equipment conditions and cannot be supplied in China. In order to meet the needs of my country's regional passenger aircraft, aviation aluminum alloy must break through key technologies such as aluminum alloy melting and casting technology, precision heat treatment technology, precision rolling and extrusion technology. At present, batch production equipment such as melting and casting equipment is not yet available and needs to be imported, and it is in the negotiation stage. Therefore, it cannot meet the needs of batch production at all, let alone obtain an airworthiness certificate. ————The article comes from the Internet. If there is any infringement, please contact to delete it.
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