Soften Behavior of 7050 Aluminum Alloy during High Temperature Compression Deformation

Abstract:

Soften behavior of 7050 aluminum alloy was investigated by high temperature compression tests conducted at 460 °C with different strain rates of 0.1, 1, 10 and 100 s-1. The results show that all the volume fractions of recrystallized grain and substructed grain of the 7050 aluminum alloy deformed at 460 °C with different strain rates are higher than 35% and 20%, respectively. Dynamic recovery and dynamic recrystallization are primary soften mechanism of the 7050 aluminum alloy deformation at 460 °C, which is not sensitive to strain rate. The recryatallization nucleation mechanisms of the 7050 aluminum alloy deformed at 460 °C include in grain boundary arch, subgrain growth and subgrain merging.

• Periodical: Applied Mechanics and Materials (Volume 109)
• Pages: 161-164
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.109.161
• Online since: October 2011
• Authors: Huie Hu, Xiao Dong Kong, Zhen Hai Shao
• Keywords: Aluminium Alloy, Dynamic Recovery, Dynamic Recrystallization (DRX), Microstructure

References

[1] J. Wloka, T. Hack, S. Virtanen: Corros. Sci. Vol. 49(2003), pp.1437-1449.

[2] J.C. Williams, E.A. Starke: Acta Mater. Vol. 51(2007), pp.5775-5799.

[3] H.J. McQueen: Mater. Sci. Eng. A Vol. 387-389(2004), pp.203-208.

[4] H. Yamagata: Scripta Metall. Mater. Vol. 30(1992), pp.411-416.

[5] B. Ren, J.G. Morris: Metall. Mater. Trans. Vol. 26A(1995), pp.31-40.

[6] J.P. Lin, Y.L. Wang, Z. Lin: J. Univer. Sci. Technol. Beijing Vol. 10(2003), pp.45-48.

[7] H. E Hu, L. Zhen, W.Z. Shao: Mater. Sci. Eng. A Vol. 488(2008), pp.64-71.