J Mater Sci Technol ›› 2009, Vol. 25 ›› Issue (05): 673-676.

• Articles • Previous Articles     Next Articles

Liquid Phase Behavior during Elevated Temperature Deformation of the Fine-Grained 5083 Al Alloy

Honghua Yan, Kaifeng Zhang   

  • Received:2008-10-06 Revised:2009-01-19 Online:2009-09-28 Published:2009-10-10

Abstract:

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 4.17×10-4−1.0Χ10-2 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.

Key words: Thermomechanical process, Fine-graied 5083 Al alloy, Liquid phase, Superplasticity