Superplastic Behavior of 2024 Aluminum Alloy Sheet Subjected to Thermomechanical Processing
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2011, Vol 34, Issue 3
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 8x10-4÷1x10-2 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 4600 and lower strain rates and at 480 0C and a higher strain rate.
Authors and Affiliations
Luciana RUS, Marius TINTELECAN, Monica SAS-BOCA, Dan NOVEANU, Ionut MARIAN
Keywords
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