Thermo-Mechanical Properties of an NiTi-Shape Memory Alloy after Dynamic Loading

• Authors: V. Grigorieva , A. Danilov , A. Razov
• Languages of publication: EN

Abstracts

EN

The results of the comparative study of a quasi-equilibrium NiTi alloy's thermo-mechanical response to high-rate and quasi-static straining in the temperature range of 100-300°C, which included the A_{f} and the M_{d} temperatures, are considered. The existence of B2 → B19' and B2 → R → B19' martensitic transformations, associated with the heterogeneous distribution of Ni₄Ti₃ precipitates is shown to result in shaping of martensitic and austenitic two-way shape memories, the simultaneous presence of which determines the reversing shape memory effect. The suppression of stress-induced B2 → B19' transformation at temperatures higher than the M_{d} temperature resulted in austenitic two-way shape memory only. Distinct dependences on the temperature of the critical stresses that initiate B2 → B19' and B2 → R → B19' martensitic transformations in austenite are shown to be the reason for the participation of the irreversible mechanisms of straining at the earliest stages of tension, whatever the strain-rate applied, thus annihilating the distinctions between the quasi-static and high-rate straining processes. As a result, the thermo-mechanical properties acquired after tension become practically independent of the strain-rate.

Keywords

EN

62.20.fg; 81.30.Kf; 81.70.Bt

Discipline

• 62.20.fg: Shape-memory effect; yield stress; superelasticity
• 81.70.Bt: Mechanical testing, impact tests, static and dynamic loads(see also 62.20.M- Structural failure of materials; 46.50.+a Fracture mechanics, fatigue, and cracks)
• 81.30.Kf: Martensitic transformations

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 128
• Issue: 4
• Pages: 592-596

Dates

published

2015-10

Contributors

author

V. Grigorieva

• Saint-Petersburg State University, Universitetskii pr. 28, Saint-Petersburg, 198504, Russia

author

A. Danilov

• Saint-Petersburg State University, Universitetskii pr. 28, Saint-Petersburg, 198504, Russia

author

A. Razov

• Saint-Petersburg State University, Universitetskii pr. 28, Saint-Petersburg, 198504, Russia

References

• [1] A. Razov, Phys. Met. Metall. 97, Suppl. 1, 97 (2004)
• [2] V. Torra, G. Carreras, S. Casciati, P. Terriault, Smart Struct. Syst. 13, 353 (2014), doi: 10.12989/sss.2014.13.3.353
• [3] A. Bragov, A. Galieva, V. Grigorieva, A. Danilov, A. Konstantinov, A. Lomunov, A. Motorin, E. Ostropiko, A. Razov, Mater. Sci. Forum 738-739, 326 (2013), doi: 10.4028/www.scientific.net/MSF.738-739.326
• [4] A. Bragov, A. Danilov, A. Konstantinov, A. Lomunov, A. Motorin, A. Razov, Phys. Met. Metall. 116, 385 (2015), doi: 10.1134/S0031918X15040031
• [5] A. Razov, A. Motorin, G. Nakhatova, J. Alloys Comp. 577, Suppl. 1, 164 (2013), doi: 10.1016/j.jallcom.2011.10.103
• [6] A. Danilov, A. Razov, in: Shape Memory Alloys: Properties, Technologies, Opportunities, Eds. N. Resnina, V. Rubanik, Trans Tech Publications, Pfaffikon, Switzerland 2015, p. 457, doi: 10.4028/www.scientific.net/MSFo.81-82.457
• [7] J. Khalil Allafi, X. Ren, G. Eggeler, Acta Mater. 50, 793 (2002), doi: 10.1016/S1359-6454(01)00385-8
• [8] J. Khalil-Allafi, A. Dlouhy, G. Eggeler, Acta Mater. 50, 4225 (2002), doi: 10.1016/S1359-6454(02)00257-4
• [9] A.M. Bragov, A.K. Lomunov, Int. J. Impact Eng. 16, 321 (1995), doi: 10.1016/0734-743X(95)93939-G
• [10] S.-Q. Shi, J.-Y. Chen, X.-L. Dong, L.-L. Wang, S.P. Belyaev, A.E. Volkov, N.F. Morozov, A.I. Razov, Explos. Shock Waves 21, 168 (2001)
• [11] A. Bragov, A. Danilov, A. Konstantinov, A. Lomunov, A. Motorin, A. Razov, Mater. Today: Proc.2, Suppl. 3, S961 (2015), doi: 10.1016/j.matpr.2015.07.441
• [12] S. Miyazaki, K. Otsuka, Y. Suzuki, Scr. Metall. 15, 287 (1981), doi: 10.1016/0036-9748(81)90346-X
• [13] S. Miyazaki, S. Kimura, K. Otsuka, Philos. Mag. A 57, 467 (1988), doi: 10.1080/01418618808204680

Identifiers

DOI

10.12693/APhysPolA.128.592