Abstract
Superplastic properties of an advanced Al-Li-Mg-Cu-Sc alloy with finegrained microstructure produced by two different processing ways (equal-channel angular extrusion and hot rolling) were studied in the temperature range of 350−525°C and at strain rates of 1.4×10−3–1.4×10−1 s−1. In both conditions the total elongations of about 400% were obtained at 450°C and a strain rate of 1.4×10−2 s−1 indicating a high strain rate superplasticity. The higher homogeneity of microstructure in the condition after equal-channel angular extrusion resulted in higher elongations and lower cavitation during superplastic deformation as compared to the hot rolled condition.
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© 2004 Kluwer Academic Publishers
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Shagiev, M., Motohashi, Y., Musin, F., Kaibyshev, R., Sitdikov, O. (2004). High Strain Rate Superplastic Behavior of Al-Li-Mg-Cu-Sc Alloy Subjected to Severe Plastic Deformation. In: Senkov, O.N., Miracle, D.B., Firstov, S.A. (eds) Metallic Materials with High Structural Efficiency. NATO Science Series II: Mathematics, Physics and Chemistry, vol 146. Springer, Dordrecht. https://doi.org/10.1007/1-4020-2112-7_19
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DOI: https://doi.org/10.1007/1-4020-2112-7_19
Publisher Name: Springer, Dordrecht
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