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The liquid phase behavior of the fine-grained 5083 Al alloy obtained through thermomechanical process was investigated during the tensile tests in a temperature range of 380-570-C and strain rate range of 4.17×10-4-1.0×10-2 s-1.The maximum elongation 530%of the fine-grained 5083 Al alloy was obtained at 550-C and 4.17×10-4 s-1.Fracture analysis by scanning electron microscopy(SEM)indicated that the formation of filament(formed by liquid phase)was greatly affected by the tensile temperature and strain rate.The results also showed that the optimum morphology of formed filament was obtained at 550-C and a strain rate of 4.17×10-4 s-1.The effect of liquid phase on superplastic deformation of the alloy was further discussed.
The liquid phase behavior of the fine-grained 5083 Al alloy obtained through thermomechanical process was investigated during the tensile tests in a temperature range of 380-570-C and strain rate range of 4.17 × 10-4-1.0 × 10-2 s- 1.The maximum elongation of 530% of the fine-grained 5083 Al alloy was obtained at 550-C and 4.17 × 10-4 s-1.Fracture analysis by scanning electron microscopy (SEM) indicated that the by liquid phase) was greatly affected by the tensile temperature and strain rate. The results also showed that an estimated number of anions superplastic deformation of the alloy was further discussed.