面对航空铝合金材料受到复合材料激烈竞争以及新一代飞机对结构材料的苛刻需求,研究人员不断地研发新型高综合性能航空铝合金及其加工技术,发展大规格材料及材料/构件一体化加工原理与技术.与复合材料相比,新型铝锂合金在减重、 控制风险和降低生产、 加工和维修成本方面具有优势,通过发展新型铝锂合金和先进的结构设计已成为支撑新一代飞机发展的重要技术手段.简要综述了铝锂合金国内外发展历史及不同阶段典型合金成分、 性能及应用情况,介绍了铝锂合金超塑性技术的发展及其在航空航天领域的应用,阐述了新型铝锂合金的成分设计发展方向及组织调控模式,分析了铝锂合金在航空航天领域的应用前景.
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.
参考文献
| [1] | Mazilkin AA;Myshlyaev MM.Microstructure and thermal stabilityof superplastic aluminium-lithium alloy after severe plastic deformation[J].Journal of Materials Science,200612(12):3767-3772. |
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