Superplastic Behavior of 2024 Aluminum Alloy Sheet Subjected to Thermomechanical Processing
Keywords:
2024 aluminum alloy, elongation to failure, strain-rate sensitivity exponent, superplastic properties, thermomechanical processing
Abstract
This paper describes the superplastic behavior of the commercial 2024 aluminum alloy. The investigated alloy was processed in a 3 mm thick sheet form. The superplastic properties of the alloy were investigated using an uniaxial tensile testing, with a constant strain rate in the range 8 x 10-4 ÷ 1 x 10-2 s-1, at temperatures in the range 450 ÷ 480 oC. The investigations included the determination of the truestrain, the true-stress caracteristics, the elongation to failure, the strain-rate sensitivity exponent m and the aspect of the alloy microstructure. Elongations to failure longer than 200% for the fine grained 2024 aluminum alloy were obtained at 460o and lower strain rates and at 480 oC and a higher strain rate.
References
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[2]. Perce, R. - Sheet Metal Forming, Institute of Physics Publishing, Philadelphia: Hilger, 1991, p. 122-127.
[3]. Pilling, J. and Ridley, N. - Superplasticity in Crystalline Solids. The Institute of Metals, London, 1989, p. 3-8.
[4]. Langdon, T.G., Wadsworth, J. - Superplasticity in Advanced Materials, The Japan Society for Research on Superplasticity, Osaka (Japan), 1991, p. 847.
[5]. Langdon, T.G. - Mechanisms of Superplastic Flow. In: Superplasticity: 60 Years after Pearson, Edited by Norman Ridley, The Institute of Materials, London, 1995, p. 9-13.
[6]. Carrino, L., Giuliano, G. and Palmieri, C. - On the Optimisation of Superplastic Forming Processes by the FiniteElement Method. In: Journal of Materials Processing Technology, volumes 143-144, 2003, p. 373-377.
[7]. Rus A. L. - Cercetari privind comportarea superplastica a materialelor metalice (Researches Concerning Superplastic Behaviour of Metallic Materials) - Ph.D. Thesis - Technical University of Cluj-Napoca, 2006.
[8]. Guillard, S. - Workpiece Materials Datebase. In: Metalworking: Bulk Forming, volume 14 A, ASM International, The Materials Information Society, 2005, p. 651-659.
Published
2011-09-15
How to Cite
1.
RUS L, TINTELECAN M, SAS-BOCA M, v D, MARIAN I. Superplastic Behavior of 2024 Aluminum Alloy Sheet Subjected to Thermomechanical Processing. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science [Internet]. 15Sep.2011 [cited 3May2024];34(3):61-5. Available from: https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/2942
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