Numerical Simulation and Experimental Research on the Deformation of Equal Channel Angular Pressing of Al-5Ti-1B Aluminum Alloy

Abstract:

The effective strain size and distribution of Al-5Ti-1B alloy deformed by equal channel angular pressing (ECAP) were investigated through the finite element simulation by the die with outer corner ψ=0°, 20°, 30° and the friction coefficient f=0, 0.2, 0.3. The simulation results show that the effective strains decrease with the increase of the outer corner ψ from 0° to 30° with a constant f; the more uniform deformation were obtained under the conditions of large friction than that of small friction. Al-5Ti-1B alloy was produced by once path ECAP at room temperature under the die with the corner angle φ=90° and ψ=20°. The optical microscope and compressing test machine were performed. The results indicate that the grain size was obviously refined. The yield strength increased by 37.5% from 142.0MPa to 195.3MPa, and hardness increased by 24% from 45.2H_V to 55.9 H_V.

• Periodical: Advanced Materials Research (Volume 815)
• Pages: 251-255
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.815.251
• Online since: October 2013
• Authors: Wen Yu Zhang, Xian Lan Liu, Xiao Ming Jin
• Keywords: Al-5Ti-1B Alloy, Equal-Channel Angular Pressing (ECAP), Numerical Simulation

References

[1] S. Gao, D. Shu, L. Wang, Y. F. Han, J. Wang and B. D. Sun. Light alloy fabrication technology Vol. 35(2007), p.7.

[2] ZH. Y. Zhao: Metal plastic processing mechanics (Metallurgical Industry Press, China 2003).

[3] B.Q. Zhang, H. T. Ma, J. G. Li and H. SH. Fang. Heat Treatment of Metals (1999), p.1.

[4] V. M. Segal. Mater. Sci. Eng. Vol. A197(1995), p.157.

[5] R. Z. Valiev, R. K. Islamgaliev, I. V. Alaexandrov. Prog. Mater. Sci. Vol. 45(2000), p.103.

[6] A. Gholinia, P. B. Prangnell, M. V. Markushev. Acta Mater. Vol. 48(2000), p.1115.

[7] Y. T. Zhu, T. C. Lowe. Mater. Sci. Eng. Vol. A291(2000), p.46.

[8] Y. Iwahashi, M. Furukawa, Z. Horita, M. Nemoto and T. G. Langdon. Metallurgical and Materials Transactions A Vol. 29(1998), p.2245.

[9] A. V. Nagasekhar, Y. Tick-Hon. Computational Materials Science, Vol. 30(2004), p.489.

[10] W. Wei, A. V. Nagasekhar, G Chen, Y. Tick-Hon and K. X. Wei. Scripta Materialia Vol. 54(2006), p.1865.

DOI: 10.1016/j.scriptamat.2006.02.026

[11] J. ZH. Li, H. Ding, W. J. Zhao and Y. B. Chen. The Chinese Journal of Nonferrous Metals Vol. 18(2008), p.2178.

[12] V. P. Basavaraj, U. Chakkingal, T.S. Prasanna Kuma. Journal of Materials Processing Technology, Vol. 209(2009), p.89.

[13] S. K. Hyoung. Mate. Sci. Eng. Vol. A315(2001), p.122.

[14] J. R. Bowen, A. Gholinia, S. M. Roberts, P. B. Prangnell. Mater. Sci. Eng. A Vol. 287(2000), p.87.

[15] Y. Iwahashi, J. Wang, Z. Horita, M. Nemoto, and T. G. Langdon. Scr. Mater. Vol. 35(1996), p.143.

[16] V. M. Segal, Mater. Sci. Eng. Vol. A271(1999), p.322.