Thermomechanical investigations of martensitic and reverse transformations in TiNi shape memory alloy

• Autorzy: Pieczyska E. A. , Gadaj S. P. , Nowacki W. K. , Tobushi H.
• Języki publikacji: EN

Abstrakty

EN

Shape memory alloys are characterised by interesting properties, i.e. shape memory effect and pseudoelasticity, which enable their increasing application. Thermomechanical aspects of martensitic and reverse transformations in TiNi shape memory alloy subjected to tension tests were investigated. The stress-strain characteristics obtained during the tests were completed by the temperature characteristics. The temperature changes were calculated on the basis of thermograms determined by an infrared camera. Taking advantages from the infrared technique, the temperature distributions on the specimen's surface were found. Heterogeneous temperature distributions, related to the nucleation and development of the new martensite phase, were registered and analysed. A significant temperature increase, up to 30 K, was registered during the martensitic transformation. The similar effects of the heterogeneous temperature distribution were observed during unloading, while the reverse transformation, martensite into austenite took place, accompanied by significant temperature decrease.

Słowa kluczowe

EN

shape memory alloy; pseudoelasticity; transformation front; thermomechanical; investigations

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2004
• Tom: Vol. 52, nr 3
• Strony: 165--171
• Opis fizyczny: Bibliogr. 12 poz., 8 rys.

Twórcy

autor

Pieczyska E. A.

• Institute of Fundamental Technological Research, Polish Academy of Sciences, 21 Świętokrzyska St., 00–049 Warsaw, Poland

autor

Gadaj S. P.

• Institute of Fundamental Technological Research, Polish Academy of Sciences, 21 Świętokrzyska St., 00–049 Warsaw, Poland

autor

Nowacki W. K.

• Institute of Fundamental Technological Research, Polish Academy of Sciences, 21 Świętokrzyska St., 00–049 Warsaw, Poland

autor

Tobushi H.

• Department of Mechanical Engineering, AICHI Inst. of Technology, 1247, Yachigusa, Yakusa-cho, Toyota-city, Aichi, 470-0392, Japan

• Institute of Fundamental Technological Research, Polish Academy of Sciences, 21 Swiętokrzyska St., 00-049 Warsaw, Poland,

Bibliografia

• [1] J. A. Shaw and S. Kyriakides, “On the nucleation and propagation of phase transformation fronts in a TiNi Alloy”, Acta Mater. 45, 683–700 (1997).
• [2] John A. Shaw, “Simulation of localized thermo-mechanical behaviour in NiTi shape memory alloy”, Plasticity 16, 541–562 (2000).
• [3] H. Tobushi, K. Takata, Y. Shimeno, W. K. Nowacki and S. P. Gadaj, “Influence of strain rate on superelastic behaviour of TiNi shape memory alloy”, Proc. Instn. Mech. Engrs., 213(L), 93–102 (1999).
• [4] Pingua Lin, Hisaaki Tobushi, Akira Ikai and Kikuaki Tanaka, “Deformation properties associated with the martensitic and R-phase transformations in TiNi Shape Memory Alloy”, J. Appl. Biomechanics 10, 1–11 (1995).
• [5] S. P. Gadaj, W. K. Nowacki and H. Tobu shi, “Temperatu reevolution during tensile test of TiNi shape memory alloy”, Arch. Mech. 51, 649–663 (1999).
• [6] S. P. Gadaj, W. K. Nowacki and E. A. Pieczyska, “Temperature evolution in deformed shape memory alloy”, Infrared Physics & Tech 43, 151–155 (2002).
• [7] D. Helm and P. Haupt, “Thermomechanical behaviour of shape memory alloys”, Proc. SPIE 4333, 302–313 (2001).
• [8] E. A. Pieczyska, S. P. Gadaj and W. K. Nowacki, “Thermoelastic and thermoplastic effects in steel, polyamide and shape memory alloys”, Proc. SPIE 4710, 479–487 (2002).
• [9] E. A. Pieczyska, S. P. Gadaj, W. K. Nowacki and H. Tobushi, “Investigations of nucleation and propagation of phase transitions in TiNi SMA”, QIRT Journal 1, 117–128 (2004).
• [10] K. Tanaka, S. Kobayashi and Y. Sato, “Thermomechanics of transformation pseudoelasticity and shape memory effect in alloys”, Inter. J. Plasticity 2, 59–72 (1986).
• [11] K. Tanaka, “A Thermomechanical sketch of shape memory effect: one-dimensial tensile behaviour”, Res Mechanica 18, 251–263 (1986).
• [12] H. Tobushi, K. Okumara, M. Endo and K. Tanaka, “Deformation behaviour of TiNi shape memory alloy under strain- or stress-controlled conditions”, Arch. Mech., 54 75–91 (2002).