Aluminum-Copper-Lithium Alloy 2050 Developed for Medium to Thick Plate
Source abstract
Abstract
This article discusses Al-Cu-Li 2050 alloy developed, qualified, and produced by Alcan Aerospace as plates. AA2050 alloy offers a low density high corrosion resistant alternative to incumbent medium to thick plate alloys like 7050-T7451, and to thin plate alloys like 2024 or higher damage tolerant versions. The fundamentals behind the choice of the Al-Cu-Li chemistry are highlighted, as well as the property balance generated in a wide range of thickness from 12 to 127 mm (0.5 to 5 in.). Manufacturing behavior of the alloy when machining or friction stir welding is also discussed in detail. Finally, it is shown that the appropriate recycling investments and logistics permit the use of 2050 alloy at an acceptable level of extra cost per kilo saved, when weight benefits are taken into account.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · Aluminum Alloys Composites Properties · Advanced Welding Techniques Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (12)
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1. F.W. Gayle, W.T. Tack, F.H. Heubaum, and J.R. Pickens, High Toughness, High Strength Aluminium Alloy Design and Practice, Sixth International Aluminium-Lithium Conference, Garmisch-Partenkirchen, Germany, 7-11 Oct. 1991. 1992, p 203–208
2. W.A. Cassada, G.J. Shiflet, and E.A. Starke, The Effect of Plastic Deformation on Al2CuLi (T1) Precipitation, Metall. Trans. A, 1991, 22A, p 299–30610.1007/BF02656799 ↗
3. B.P. Huang and Z.Q. Zheng, Effect of Li Content on Precipitation in Al-Cu-(Li)-Mg-Ag-Zr Alloys, Scripta Mater., 1998, 38, p 357–36210.1016/S1359-6462(97)00503-4 ↗
4. B.P. Huang and Z.Q. Zheng, Independant and Combined Roles of Trace Mg and Ag Additions in Properties Precipitation Process and Precipitation Kinetics of Al-Cu-Li-(Mg)-(Ag)-Zr-Ti Alloys, Acta Mater., 1998, 46(12), p 4381–439310.1016/S1359-6454(98)00079-2 ↗
5. Z. Chen, Z. Zheng, and H. Yi, Effects of Trace Silver and Magnesium on the Microstructure and Mechanical Properties of Al-Cu-Li Alloys, J. Wuhan Univ. Technol. Mater. Sci. Ed., 2005, 20(1), p 9–1210.1007/BF02870862 ↗
6. G. Itoh, Q. Cui, and M. Kanno, Effects of Small Addition of Magnesium and Silver on the Precipitation of T1 Phase in an Al-4%Cu-1.1%Li-0.2%Zr Alloy, Mater. Sci. Eng. A, 1996, 211, p 128–13710.1016/0921-5093(95)10157-8 ↗
7. R.J. Rioja, P.E. Bretz, R.R Sawtell, W.H. Hunt, and E.A. Ludwiczak, Precipitation Reactions, Strength and Toughness of Al-Li-Cu Alloys, Aluminum Alloys: Their Physical and Mechanical Properties, Vol III, Charlottesville, Virginia, USA, 15-20 June 1986, p 1781–1797
8. F. Heymes, B. Commet, B. Dubost, Ph. Lassince, Ph. Lequeu, and G.M. Raynaud, Development of New Al Alloys for Distortion Free Machined Aluminium Aircraft Components, 1st International Non-Ferrous Processing & Technology Conference, 10-12 March 1997 (St-Louis, Missouri, USA), ASM International, Materials Park, OH, 1997, p 249–255
9. Ph. Lequeu, Ph. Lassince, T. Warner, and G.M. Raynaud, Engineering for the Future: Weight Saving and Cost Reduction Initiatives, Int. J. Aircraft Eng. Aerospace Technol., 2001, 73(2), p 147–15910.1108/00022660110386663 ↗
10. Ph. Lequeu, R. Muzzolini, J.C. Ehrstrom, F. Bron, and R. Maziarz, High-Performance Friction Stir Welded Structures Using Advanced Alloys, Aeromat Conference, Seattle, WA, June 2006
11. Ph. Lequeu, J.C. Ehrstrom, I. Bordesoules, and Ch. Hantrais, Progress at Alcan Aerospace on the Friction Stir Welding of Al-Li 2050, 1st EUCOMAS Conference incl., CD-ROM Ort, Berlin, 26./27.5.2008
12. M. Mohaghegh and S.E. Axter, 31st Structures, Development of Optimum Materials for Aircraft Structures, Structural Dynamics and Materials Conference, Long Beach, CA, 2-4 April 1990 (AIAA-90-1029)