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Advanced Aluminum and Aluminum-Lithium Solutions for Derivative and Next Generation Aerospace Structures
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 10, 2012 by SAE International in United States
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The challenging performance and affordability goals of next generation aircraft have accelerated the demand for advanced structural materials and concepts capable of achieving significant weight and cost (acquisition and operational) reduction. To meet these aggressive weight and structural maintenance reduction targets, future aircraft will require structural solutions that provide increased strength, damage tolerance and corrosion resistance. Alcoa has developed advanced aluminum alloys and third generation aluminum-lithium (Al-Li) alloys with exceptional performance and durability capability.
This presentation first introduces the basic properties of the new 2xxx and 7xxx series aerospace aluminum and third generation Al-Li alloys possessing improved strength, fatigue life, crack propagation, fracture toughness, corrosion resistance, and, in the case of Al-Li alloys, reduced density and increased modulus. Secondly, the results of coupon and structural detail tests combined with trade studies for typical short range transport aircraft demonstrate how the improved properties of the new alloys can be used to provide weight savings and/or maintenance improvements in current, derivative and new aircraft. Lastly, it discusses the feasibility of using conventional aerospace manufacturing techniques such as stretch forming, machining, hole drilling, and fastening.
|Technical Paper||Elimination of Electrocoating on Aluminum Intensive Vehicles|
|Technical Paper||Effects of Pretreatment Variables on the Corrosion Performance of Galvanneal|
|Technical Paper||Today’s Aluminum Aircraft Alloys|
CitationBodily, B., Heinimann, M., Bray, G., Colvin, E. et al., "Advanced Aluminum and Aluminum-Lithium Solutions for Derivative and Next Generation Aerospace Structures," SAE Technical Paper 2012-01-1874, 2012, https://doi.org/10.4271/2012-01-1874.
- Liu, J Rioja, R. J. “The Evolution of Al-Li Base Products for Aerospace and Space Applications,” Metalurgical and Material Transactions March 31 2012 10.1007/s11661-012-1155-z
- The Boeing Company “Boeing Commercail Market Outlook 2011-2030,” http://www.boeing.com/commercial/cmo/ March 2012
- Airbus “Airbus Market Outlook 2011-2030,” http://www.airbus.com/company/market/forecast/passenger-aircraft-market-forecast/ March 2012
- Alcoa Material Safety Data Sheet “Wrought Aluminum Products, 2xxx Series Alloys,” No. 664 Nov. 24 2009
- Alcoa Material Safety Data Sheet “Wrought Aluminum Products, 7xxx Series Alloys,” No. 669 Jan. 14 2010
- Alcoa Material Safety Data Sheet “Aluminum Lithium Alloys,” No. 337 July 31 2009
- The Aluminum Association “Safety, Health and Recycling Aspects of Aluminum-Lithium Alloys,” The Aluminum Association -T4
- Leuthauser, S. Alcoa Davenpot Works June 2005
- Newborn, M. Alcoa Technical Center Dec. 2007
- Marinelli, J. Abbott, J. Alcoa Technical Center Sept. 2006
- Giummarra, C. “Split Sleeve Cold Hole Expansion of New Aluminum-Lithium Alloys (07-041),” Internal Research Report Alcoa Technical Center Mar. 2007