Super Plastic Deformation Behavior of the Commonly as-Extruded Mg-3Zn-1Al Magnesium Alloy

Abstract:

Super plastic behavior of the commonly as-extruded Mg-3Zn-1Al (ZA31) magnesium alloy is investigated at temperatures ranging from 593 to 623K and strain rates ranging from 8×10^-5 to 10^-3s^-1. The results show that the alloy exhibits excellent super plasticity and the maximum elongation-to-failure reaches 220.4%. The alloy also shows a high strain rate sensitivity exponent of 0.38. Microstructure observations suggest that grain boundary sliding (GBS) with cavity coordination makes a substantial contribution to the super plastic deformation.

• Periodical: Advanced Materials Research (Volumes 798-799)
• Pages: 79-82
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.798-799.79
• Online since: September 2013
• Authors: Jian Hua Sun, Hai Gu, Guo Ding Yuan
• Keywords: Cavity, Grain Boundary Sliding, Super Plasticity, ZA31 Magnesium Alloy

References

[1] M. Bamberger, G. Dehm: Annual Review of Materials Research, Vol. 38(2008), p.505.

[2] S. G. Pantelakis, N. D. Alexopoulos and A. N. Chamos: Journal of Engineering Materials and Technology Vol. 129(2007), p.422.

[3] S. D. Wu: Theory of metal superplastic deformation (Defense Industry Press, Beijing 1997).

[4] T. Mukai, H. Watanabe and K. Higashi: Materials Science and Technology, Vol. 16(2000), p.1314.

[5] R. Panicker, A. H. Chokshi and R. K. Mishra: Acta Materialia, Vol. 57(2009), p.3683.

[6] H. R. Abedi, A. Zarei-Hanzaki and S. Khoddam. Materials & Design, Vol. 32(2011), p.2181.