Microstructure and Properties of Ti Rods Produced by Multi-Step SPD

Abstract:

This paper studies the effect of combined SPD treatment on microstructure and mechanical properties of semi-products out of CP Ti. The combined processing, consisting of equal-channel angular pressing and further thermomechanical treatment, produced ultrafine-grained rods out of Grade 2 CP Ti with a diameter of 6.5 mm and a length of up to 1 m. It was established that the formation of homogeneous ultrafine-grained structure in Ti rod with α-grain size of about 100 nm allowed to enhance yield stress by 200% in comparison with initial annealed state.

• Periodical: Materials Science Forum (Volumes 503-504)
• Pages: 763-768
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.503-504.763
• Online since: January 2006
• Authors: V.V. Latysh, Irina P. Semenova, G.H. Salimgareeva, I.V. Kandarov, Yuntian T. Zhu, Terry C. Lowe, Ruslan Valiev
• Keywords: Preliminary Strain Treatment, Severe Plastic Deformation (SPD), Titanium (Ti), Ultrafine Grained Structure

References

[1] D.M. Brunette, P. Tengvall, M. Textor, P. Thomsen, Titanium in medicine, Springer, 2001, p.1019.

[2] R.Z. Valiev Nanostructuring of Metals by Severe Plastic Deformation for Advanced Properties, Nature Materials, Vol. 3, (2004) pp.511-516.

DOI: 10.1038/nmat1180

[3] R.Z. Valiev, R.K. Islamgaliev, I.V. Alexandrov, Progr. Mater. Sci,. 45(2) 2000, 103-189.

[4] A.V. Sergueeva, V.V. Stolyarov, R.Z. Valiev, A.K. Mukherjee, Scripta Mater. 45, 2001, pp.747-752.

DOI: 10.1016/s1359-6462(01)01089-2

[5] A.V. Sergueeva, V.V. Stolyarov, R.Z. Valiev, A.K. Mukherjee, Scripta Mater. 43, 2000, pp.819-824.

DOI: 10.1016/s1359-6462(00)00496-6

[6] V.V. Stolyarov, Y.T. Zhu, I. Alexandrov, T. C. Lowe and R.Z. Valiev, Mater. Sci. Eng., A 303, 2001, 82.

[7] Y.T. Zhu, J.Y. Huang, J. Gubicza, T. Ungar, Y.M. Wang, E. Ma and R.Z. Valiev, MRS, Vol. 18 №8, 1908-(1916).

[8] R.Z. Valiev, V.V. Stolyarov, V.V. Latysh, G.I. Raab, T. C. Lowe, Y.T. Zhu, 9th Int. Conf. Titanium-99, V3(2000), 1569-1572.

[9] V.V. Stolyarov, Y.T. Zhu, I.V. Alexandrov, T.C. Lowe and R.Z. Valiev Mater. Sci. Eng. A 299, 2001, 59.

[10] USA Patent № 6, 399, 215, IIC7 С22 С014/00; С22 F001/18 «Ultrafine-grained titanium for medical implants». Published on 4. 07. (2002).

[11] V.V. Latysh, I.P. Semenova, G.H. Sadikova, Y.T. Zhu, T.C. Lowe, R.J. Asaro, R.Z. Valiev in Ultrafine Grained Materials IV, TMS (The Minerals, Metals and Materials Society), Eds. Yu. T. Zhu et al., (2005).

DOI: 10.1007/1-4020-3923-9_32

[12] Metallography of Ti alloys. Мoscow: Metallurgy, Publ. On 1980. p.464.