Phase Transformations and Functional Properties of NiTi Alloy with Ultrafine-Grained Structure

Abstract:

Severe plastic deformation (SPD) processes, are successfully employed to produce ultra fine grain (UFG) and nanocrystalline (NC) microstructures in Ni50.7Ti49.3 shape memory alloy. The effect of grain size on phase transformations during annealing is investigated by differential scanning calorimetry (DSC) and transmission electron microscopy (TEM). The results of comparative studies of phase transformations in coarse-grained, UFG and NC alloys after SPD and subsequent long-term (up to 100 hours) annealing at 400С is presented. The functional properties and the innovation potential of UFG NiTi alloys is considered and discussed.

• Periodical: Materials Science Forum (Volumes 667-669)
• Pages: 1059-1064
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.667-669.1059
• Online since: December 2010
• Authors: Egor Prokofiev, Juri Burow, Jan Frenzel, Dmitriy Gunderov, Gunther Friedrich Eggeler, Ruslan Valiev
• Keywords: Martensitic Transformation (MT), NiTi Shape Memory Alloy (SMA), Pseudoelastic Cycling, Severe Plastic Deformation (SPD)

References

[1] K. Otsuka, C.M. Wayman, editors. Shape memory materials. Cambridge: Cambridge University Press; (1998).

[2] E. Hornbogen In: Bunk WGJ, editor. Advanced structural and functional materials. Heidelberg: Springer-Verlag; 1991: 133–63.

[3] T. Tadaki, Y. Nakata, K. Shimizu, K . Otsuka: Trans. JIM 1986; 27: 731.

[4] [ J. Khalil-Allafi, A. Dlouhy, G. Eggeler. Acta Mater. 2002; 50: 4225.

[5] K. Otsuka and X. Ren: Prog. Mater. Sci. 50 (2005): 511.

[6] V.G. Pushin, V.V. Stolyarov, R.Z. Valiev, N.I. Kourov, N.N. Kuranova, E.A. Prokofiev, L.I. Yurchenko: Ann. Chim. Sci. Mat. 2002; 27 (3): 77.

[7] J. Burow, E. Prokofiev, Ch. Somsen, J. Frenzel, R.Z. Valiev, G. Eggeler: Mat. Sc. Forum, 584-586 (2008): 852.

DOI: 10.4028/www.scientific.net/msf.584-586.852

[8] S.D. Prokoshkin, I. Yu. Khmelevskaya, S.V. Dobatkin, I.B. Trubitsyna, E.V. Tatyanin, S. Turenne, V. Brailovski, V.V. Stolyarov, E.A. Prokofiev: Ultrafine Grained Materials IV (TMS – 2006): 301.

DOI: 10.1016/j.msea.2007.02.157

[9] R. Valiev, D. Gunderov, E. Prokofiev, V. Pushin, Y. Zhu: Mat. Trans. 49, 1 (2008): 97.

[10] E. Prokofiev, D. Gunderov, S. Prokoshkin and R. Valiev, in ESOMAT 2009 - The 8th European Symposium on Martensitic Transformations, EDP Sciences (www. esomat. org), 2009, 06028, 1.

DOI: 10.1051/esomat/200906028

[11] J. Khalil-Allafi, G. Eggeler, A. Dlouhy, W.W. Schmahl, Ch. Somsen: Mater. Sci. Eng, 2004; A378: 148.

[12] J. Khalil-Allafi, X. Ren, G. Eggeler: Acta Mater. 2002; 50: 793.

[13] T. Waitz, V. Kazyhanov, H.P. Karnthaler: Acta Mater. 2004; 52: 137.

[14] E. Prokofiev, J. Burow, E. Payton, R. Zarnetta, J. Frenzel, D. Gunderov, R. Valiev and G. Eggeler, Adv. Eng. Mat., Vol. 12, Issue 8: 747.

DOI: 10.1002/adem.201000101

[15] R.Z. Valiev, R.K. Islamgaliev and I.V. Alexandrov, Prog. Mater. Sci. 2000, 45, 103.

[16] G. Nurislamova, X. Sauvage, M. Murashkin, R. Islamgaliev, R. Valiev, Phil. Mag. Let. 2008, 88, 459.

[17] C.L. Brinson, I. Schmidt, R. Lammering, Journal of the Mechanics and Physics of Solids, Vol. 52, (2004): 1549.

[18] P. Filip. / Titanium in Medicine. Berlin: Spriger-Verlag, 2000: 53.