[1] J. Hu, Z. Marciniak, J. Duncan: Mechanics of Sheet Metal Forming, Elsevier, (2002).
[2] R. Z. Valiev, T. G. Langdon: Prog. in Mater. Sci., 51(2006), 881.
[3] C. Wang, F. Li, Q. Li, L. Wang: Mater. Sci. and Eng. A, 548(2012), 19.
[5] Pardis N, and Ebrahimi R Mater Sci Eng A 527 (2010) 6153.
[6] Bagherpour E, Reihanian M, and Ebrahimi R Mater Des 36 (2012) 391.
[7] Tork N B, Pardis N, and Ebrahimi R Mater Sci Eng A 560 (2013) 34.
[8] Bagherpour E, Ebrahimi R, and Qods F Mater Des 83 (2015) 368.
[9] Bagherpour E, Qods F, Ebrahimi R, and Miyamoto H Mater Sci Eng A 674 (2016) 221.
[10] G. Salishchev, R. Zaripova, R. Galeev, O. Valiakhmetov: Nano. Mater.,6(1995), 913.
[11] N. Pardis, R. Ebrahimi: Mater. Sci. and Eng. A, 527(2010), 6153.
[12] S. L. Semiatin, D. P. DeLo: Mater. & Des., 21(2000), 311.
[13] E. Bagherpour, R. Ebrahimi, F. Qods: Mater. & Des., 83(2015), 368.
[14] N. B. Tork, N. Pardis, R. Ebrahimi: Mater. Sci. and Eng. A, 560(2013), 34.
[15] M. Shahbaz,N. Pardis, R. Ebrahimi, B. Talebanpour: Mater. Sci. and Eng. A, 530(2011), 469.