A Study on the Aluminum Alloy AA1050 Severely Deformed by Non-Equal Channel Angular Pressing

Abstract:

Article Preview

In order to improve the efficiency of grain refinement, a study on the modified process (called Non-equal channel angular pressing) from the conventional equal channel angular pressing has been conducted. The deformation behavior of aluminum alloy AA1050 deformed by the Non-equal channel angular pressing which has a smaller width in the exit channel than the entry channel was examined based on the finite element simulations. The results revealed that a smaller ratio of dE and dI (dE/dI) leads to a larger equivalent plastic strain. It is not only beneficial to enhance the plastic deformation but also very helpful to get rid of the development of dead zone in the outer corner of die by decreasing the exit channel width by comparing with the conventional process.

Info:

Periodical:

Edited by:

Tan Jin

Pages:

442-447

Citation:

G.Y. Deng et al., "A Study on the Aluminum Alloy AA1050 Severely Deformed by Non-Equal Channel Angular Pressing", Advanced Materials Research, Vol. 651, pp. 442-447, 2013

Online since:

January 2013

Export:

Price:

$38.00

[1] R.Z. Valiev, T.G. Langdon, Principles of equal-channel angular pressing as a processing tool for grain refinement, Prog. Mater. Sci. 51 (2006) 881-981.

DOI: https://doi.org/10.1016/j.pmatsci.2006.02.003

[2] C. Lu, G.Y. Deng, A.K. Tieu, L.H. Su, H.T. Zhu, X.H. Liu, Crystal plasticity modeling of texture evolution and heterogeneity in equal channel angular pressing of aluminum single crystal, Acta Mater. 59 (2011) 3581-3592.

DOI: https://doi.org/10.1016/j.actamat.2011.02.031

[3] V.M. Segal, Materials processing by simple shear, Mater. Sci. Eng. A 197 (1995) 157-164.

[4] L.H. Su, C. Lu, L.Z. He, L.C. Zhang, P. Guagliardo, K. Tieu, S.N. Samarin, H.J. Li, Study of vacancy-type defects by positron annihilation in ultrafine-grained aluminum severely deformed at room and cryogenic temperatures, Acta Mater. 60 (2012).

DOI: https://doi.org/10.1016/j.actamat.2012.04.003

[5] Y. Iwahashi, J.T. Wang, Z. Horita, M. Nemoto, T.G. Langdon, Principle of equal-channel angular pressing for the processing of ultra-fine grained materials, Scripta Mater. 35 (1996) 143-146.

DOI: https://doi.org/10.1016/1359-6462(96)00107-8

[6] Y.B. Wang, J.C. Ho, Y. Cao, X.Z. Liao, H.Q. Li, Y.H. Zhao, E.J. Lavernia, S.P. Ringer, Y.T. Zhu, Dislocation density evolution during high pressure torsion of a nanocrystalline Ni-Fe alloy, Appl. Phys. Lett. 94 (2009) 091911.

DOI: https://doi.org/10.1063/1.3095852

[7] L.H. Su, C. Lu, K. Tieu, G.Y. Deng, X.D. Sun, Ultrafine grained AA1050/AA6061 composite produced by accumulative roll bonding, Mater. Sci. Eng. A 559 (2013) 345-351.

DOI: https://doi.org/10.1016/j.msea.2012.08.109

[8] D.N. Lee, An upper-bound solution of channel angular deformation, Scripta Mater. 43 (2000) 115-118.

DOI: https://doi.org/10.1016/s1359-6462(00)00377-8

[9] L.S. Toth, R. Lapovok, A. Hasani, C.F. Gu, Scripta Mater. 61 (2009) 1121-1124.

[10] A. Hasani, L.S. Toth, B. Beausir, Principles of Nonequal channel angular pressing, J. Eng. Mater. Tech. 132 (2010) 031001.

DOI: https://doi.org/10.1115/1.4001261