Study on the Super-Plastic Property of ECAPed Magmesium Alloy

Abstract:

In this paper, the influence of temperature and strain rate on the superplastic deformation behaviors of the Mg-Zn-Nd alloy has been investigated through performing tensile tests at different temperatures and strain rates. After 4 passes of ECAP by route C, the strain-rate sensitivity coefficients reached 0.32 at 300°C, indicating that the ECAPed Mg-Zn-Nd alloy exhibited a good superplasticity at lower temperature. The results of flow activation energy showed that the super-plastic deformation mechanism of magnesium alloys is grain-boundary sliding controlled by grain boundary diffusion.

• Periodical: Advanced Materials Research (Volumes 311-313)
• Pages: 640-643
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.311-313.640
• Online since: August 2011
• Authors: Ying Jie Li, Xiu Zhi Zhang, Feng Li
• Keywords: Equal-Channel Angular Pressing (ECAP), Magnesium Alloy, Tensile Test

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