【SCI 论文双语导读】飞机用先进铝合金的发展近况
前言：综合读者后台留言的意见和建议，我们建立了【SCI论文双语导读】板块，科研英语两不误。由于能力精力有限，如有不足，望批评指正。
Recent developments in advanced aircraft aluminium alloys
飞机用先进铝合金的发展近况
Aluminium alloys have been the primary material for the structural parts of aircraft formore than 80 years because of their well known performance, well established design methods, manufacturing and reliable inspection techniques.
铝合金由于众所周知的性能，完善的设计方法、成熟的制造及可靠性检测技术，在过去80余年中，成为制造飞机零构件的主要材料。
Nearly for a decade composites have started to be used more widely in large commercial jet airliners for the fuselage, wing as well as other structural components inplace of aluminium alloys due their high specific properties, reduced weight, fatigue performance and corrosion resistance.
近十年来，复合材料已经开始广泛使用在大型商用喷气客机的机身、机翼以及其他结构件而代替了铝合金。这与复合材料的特殊性能、轻量化、疲劳性能和耐腐蚀性能有着密切关系。
Although the increased use of composite materials reduced the role of aluminium up to some extent, high strength aluminium alloys remain important in airframe construction.
虽然复合材料的使用在一定程度上削弱了铝的地位，但是高强度铝合金在飞机机身结构中仍然扮演着重要角色。
Aluminium is a relatively low cost, light weight metal that can be heat treated and loaded to relatively high level of stresses, and it is one of the most easily produced of the high performance materials, which results in lower manufacturing and maintenance costs.
铝是一种成本相对较低的轻金属，经过热处理后能够承受较高的应力载荷；此外，铝还是最容易生产的高性能材料之一，因而其制造与维护成本较低。
There have been important recent advances in aluminium aircraft alloys that can effectively compete with modern composite materials. This study covers latest developments in enhanced mechanical properties of aluminium alloys, and high performance joining techniques.
飞机用铝合金近期取得了重要进展，使得其能与现代复合材料有效地竞争。这篇文章总结了铝合金研究的最新进展，包括力学性能的改善与高性能焊接技术。
The mechanical properties on newly developed 2000, 7000 series aluminium alloys and new generation Al–Li alloys are compared with the traditional aluminium alloys. The advantages and disadvantages of the joining methods, laser beam welding and friction stir welding, are also discussed.
对比分析了新开发的2000和7000系铝合金、新一代Al-Li合金与传统铝合金的力学性能，并讨论了激光焊和摩擦搅拌焊的优缺点。
想深入阅读的读者，请查看论文：Tolga Dursun, Costas Soutis, Material Design,56(2014), 862-871
不同铝合金代表性屈服强度、伸长率、KIC的对比
各种铝合金的可焊性
材料科学与工程编译。如需转载请联系mse_material@163.com。
今日编辑：明轩