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Fractographic Features of the Fatigue Fracture of Nitinol Alloy

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We study the macro- and microfractographic features of the mechanism of initiation and propagation of fatigue cracks in the nitinol alloy after its testing for low-cycle fatigue and analyze possible influence of the structural and phase transformations caused by the cyclic deformation of nitinol on the fractographic features of its fatigue fracture. Thus, almost parallel transcrystalline facets of brittle cleavage located in almost mutually perpendicular planes along the entire length of martensite crystals are observed within the boundaries of separate grains (first of all, in the early stages of fracture). The signs of shallow fatigue striations are detected (but rarely) in the zone of the stable growth of the fatigue crack. The spacing of these striations approximately corresponds to a crack-growth rate of 8 ∙ 107 m/cycle. It is suggested that the deformation transformation of austenite into martensite can also distort the classical deformation mechanism of formation of the fatigue striations. In the zones of fractures with uncontrolled crack growth, the elements of ductile pit topography are predominant, which is typical of the fracture surfaces of specimens destroyed under active loading.

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References

  1. G. Kang and D. Song, “Review on structural fatigue of NiTi shape memory alloys: Pure mechanical and thermo-mechanical ones,” Theor. Appl. Mech., 5, No. 6, 245–254 (2015).

    Article  Google Scholar 

  2. S. Miyazaki, S. Kimura, F. Takei, T. Miura, K. Otsuka, and Y. Suzuki, “Shape memory effect and pseudoelasticity in a TiNi single crystal,” Scr. Metall., 17, No. 9, 1057–1062 (1983).

    Article  CAS  Google Scholar 

  3. F. Auricchio, E. Boatti, and M. Conti, “SMA biomedical applications,” in: L. Lecce and A. Concilio (editors), Shape Memory Alloy Engineering, Butterworth–Heinemann, Boston (2015), pp. 307–341.

    Chapter  Google Scholar 

  4. V. Torra, C. Auguet, G. Carreras, L. Dieng, F. C. Lovey, and P. Terriault, “The SMA: An effective damper in civil engineering that smoothes oscillations,” Mater. Sci. Forum, 706–709, 2020–2025 (2012).

    Article  Google Scholar 

  5. P. Yasniy, M. Kolisnyk, O. Kononchuk, and V. Iasnii, “Calculation of constructive parameters of SMA damper,” Sci. J. TNTU, 88, No. 4, 7–15 (2017).

    Google Scholar 

  6. D. J. Hartl and D. C. Lagoudas, “Aerospace applications of shape memory alloys,” Proc. Inst. Mech. Eng. Part G. J. Aerosp. Eng., 221, No. 4, 535–552 (2007).

    Article  CAS  Google Scholar 

  7. S. W. Robertson, A. R. Pelton, and R. O. Ritchie, “Mechanical fatigue and fracture of Nitinol,” Int. Mat. Reviews, 57, No. 1, 1–36 (2012).

    Article  CAS  Google Scholar 

  8. V. Iasnii, P. Yasniy, Yu. Lapusta, and T. Shnitsar, “Experimental study of pseudoelastic NiTi alloy under cyclic loading,” Sci. J. TNTU, 92, No. 4, 7–12 (2018).

    Google Scholar 

  9. V. P. Iasnii, H. M. Nykyforchyn, O. T. Tsyrul’nyk, and O. Z. Student, “Specific features of deformation of the nitinol alloy after electrolytic hydrogenation,” Fiz.-Khim. Mekh. Mater., 54, No. 4, 124–130 (2018); English translation: Mater. Sci., 54, No. 4, 582–588 (2019).

  10. V. Iasnii and P. Yasniy, “Influence of stress ratio on functional fatigue of pseudoelastic NiTi alloy,” Proced. Struct. Integrity, 16, 67–72 (2019).

    Article  Google Scholar 

  11. V. Iasnii and P. Yasniy, “Degradation of functional properties of pseudoelastic NiTi alloy under cyclic loading: an experimental study,” Acta Mech. Autom., 13, No. 2, 95–100 (2019).

    Google Scholar 

  12. O. Z. Student, W. Dudzinski, H. M. Nykyforchyn, and A. Kaminska, “Effect of high-temperature degradation of heat-resistant steel on mechanical and fractographic peculiarities of fatigue crack growth,” Fiz.-Khim. Mekh. Mater., 34, No. 4, 49–58 (1999); English translation: Mater. Sci., 35, No. 4, 499–508 (1999).

  13. P. O. Maruschak, D. Ya. Baran, A. P. Sorochak, R. T. Bishchak, and V. P. Yasnii, “Cyclic crack resistance and micromechanisms of fracture of steel 25Kh1M1F,” Strength Mater., 44, No. 4, 410–418 (2012).

    Article  CAS  Google Scholar 

  14. L. Poberezhnyi, P. Maruschak, O. Prentkovskis, I. Danyliuk, T. Pyrig, and J. Brezinová “Fatigue and failure of steel of offshore gas pipeline after the laying operation,” Arch. Civil Mech. Eng., 16, No. 3, 524–536 (2016).

    Article  Google Scholar 

  15. Y. Murakami and R. O. Ritchie, “Effects of hydrogen on fatigue-crack propagation in steels,” in: R. P. Gangloff and B. P. Somerday (editors), Gaseous Hydrogen Embrittlement of Materials in Energy Technologies: The Problem, Its Characterization and Effects on Particular Alloy Classes, Vol. 1, Woodhead Publ., Cambridge (2012), pp. 379–417.

    Chapter  Google Scholar 

  16. V. P. Iasnii, O. Z. Student, and H. M. Nykyforchyn, “Influence of hydrogenation on the fracture of nitinol alloy in tension,” Fiz.-Khim. Mekh. Mater., 54, No. 3, 80–85 (2019); English translation: Mater. Sci., 55, No. 3, 386–391 (2019).

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Authors and Affiliations

  1. I. Pulyui Ternopil National Technical University, Ternopil, Ukraine

    V. P. Iasnii

  2. Karpenko Physicomechanical Institute, Ukrainian National Academy of Sciences, Lviv, Ukraine

    H. M. Nykyforchyn, O. Z. Student & L. M. Svirska

Authors
  1. V. P. Iasnii
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  2. H. M. Nykyforchyn
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  3. O. Z. Student
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  4. L. M. Svirska
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Correspondence to V. P. Iasnii.

Additional information

Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 55, No. 5, pp. 148–153, September–October, 2019.

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Iasnii, V.P., Nykyforchyn, H.M., Student, O.Z. et al. Fractographic Features of the Fatigue Fracture of Nitinol Alloy. Mater Sci 55, 774–779 (2020). https://doi.org/10.1007/s11003-020-00370-9

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  • DOI: https://doi.org/10.1007/s11003-020-00370-9

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