文章信息/Info

Title:

Progress of Aerocraft Al-Li Alloys

作者:

李紅萍; 葉凌英; 鄧運來; 張新明  

中南大學材料科學與工程學院，中國商飛上海飛機設計研究院

Author(s):

LI Hongping;  YE Lingying;  DENG Yunlai;  ZHANG Xinming  

1�盨chool of Materials Science and Engineering, Central South University,
2�盨hanghai Aircraft Design and Research Institute of COMAC,

關鍵詞:

鋁鋰合金; 航空航天; 超塑性; 合金成分; 微觀組織

DOI:

10.7502/j.issn.1674-3962.2016.11.07

文獻標志碼:

A

摘要:

面對航空鋁合金材料受到復合材料激烈競爭以及新一代飛機對結構材料的苛刻需求，研究人員不斷地研發新型高綜合性能航空鋁合金及其加工技術，發展大規格材料及材料/構件一體化加工原理與技術。與復合材料相比，新型鋁鋰合金在減重、控制風險和降低生產、加工和維修成本方面具有優勢，通過發展新型鋁鋰合金和先進的結構設計已成為支撐新一代飛機發展的重要技術手段。簡要綜述了鋁鋰合金國內外發展歷史及不同階段典型合金成分、性能及應用情況，介紹了鋁鋰合金超塑性技術的發展及其在航空航天領域的應用，闡述了新型鋁鋰合金的成分設計發展方向及組織調控模式，分析了鋁鋰合金在航空航天領域的應用前景。

Abstract:

In order to face the fierce substitution competition from the composites and other structural materials and meet the strict requirements of new generation airplane for the service performance of the aluminium alloys, scientists and engineers need to keep developing new aluminium alloys with comprehensive performance and their processing technology, and to investigate the processing principle and technology of material/structural parts integration. Compared with the composites, new generation aluminium-lithium alloys are lighter, with lower risk, less expensive to manufacture, operate and repair than composites-intensive planes. It becomes an important technology to support new generation airplanes by new aluminium-lithium alloys in combination with advanced structural concepts. The development history of aluminium-lithium alloys and typical alloy compositions, properties and applications in different stages are briefly reviewed, as well as the superplasticity technology of aluminium-lithium alloys and their application in aerospace industries. The development trade of composition design and microstructure control in new generation aluminium-lithium alloys are introduced, and their application prospect is discussed.