Abstract
In this work, the formation of a packet structure composed of colonies of lamellar plates separated by twin boundary {101}fct in In–4.5 wt % Cd alloy upon cooling below the fcc → fct martensitic transition temperature has been shown using the methods of metallography, X-ray diffraction, transmission electron microscopy, and EBSD analysis. Two neighboring lamellae differ from each other by the direction of their tetragonality axes. Using ЕВSD analysis, it has been established that neighboring packets always contain three types of tetragonal martensite lamellae, which are in twin positions and differ from each other by the direction of their tetragonality axes. In turn, each martensite lamella consists of a set of smaller lamellae, which are in twin positions. After the cycle of fct → fcc → fct transitions, the alloy recrystallizes with a decrease in the grain size by several times compared with the initial structure such that the size of packets and the length and width of martensitic lamellae in a packet correlate with a change in the size of an alloy grain.
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References
V. G. Pushin, V. V. Kondrat’ev, and V. A. Khachin, Pretransition Phenomena and Martensitic Transformations (UrO RAN, Ekaterinburg, 1998) [in Russian].
V. V. Kondrat’ev and V. G. Pushin, “Pre-transition phenomena in metals, their alloys and compounds,” Fiz. Met. Metalloved. 60, 629–650 (1985).
M. R. Madhava and G. A. Saunders, “An ultrasonic study of the elastic phase transition in In–Cd alloys,” Philos. Mag. 36, 777–796 (1977).
Yu. V. Khlebnikova, L. Yu. Egorova, D. P. Rodionov, E. S. Belosludtseva and V. A. Kazantsev, “Crystallographic features of the structure of a martensite packet of the NiMn intermetallic compound,” Tech. Phys. 61, 887–897 (2016).
K. Adachi and C. M. Wayman, “Transformation behavior of nearly stoichiometric Ni–Mn alloys,” Metall. Mater. Trans. A 16A, 1567–1579 (1985).
K. Adachi and C. M. Wayman, “Electron microscopic study of θ-phase martensite in Ni–Mn alloys,” Metall. Mater. Trans. A 16A, 1581–1597 (1985).
T. R. Finlayson, A. J. Morton, and E. D. Norman, “Electron diffuse scattering studies of premartensitic alloys: ß' Cu–Zn, ß' Ni–AI, In–TI, and Fe–Ni,” Metall. Mater. Trans. A 19A, 199–205 (1988).
M. Brodt and R. S. Lakes, “Viscoelastic behaviour in indium alloys: InSn, InBi, InCd and InSnCd,” J. Mater. Sci. 31, 6577–6581 (1996).
V. M. Polovov and E. G. Ponyatovskii, “On the thermodynamics of phase transitions in the fct ↔ fcc alloys in indium alloys,” Zh. Eksp. Teor. Fiz. 64, 937–945 (1973).
Y. Koyama and O. Nittono, “Mechanism of the phase transformations in indium solid solutions,” J. Jpn. Inst. Met. 45, 869–877 (1981).
O. Nittono and Y. Koyama, “Cubic–tetragonal transformation and shape memory behavior in indium-thallium and indium-cadmium alloys,” Trans. Jpn. Inst. Met. 23, 285–295 (1982).
T. R. Finlayson, P. Goodman, A. Olsen, P. Norman, and S. W. Wilkins, “An electron diffraction study of a pre-martensitic In–24 at % Tl alloy,” Acta Crystallogr. 40, 555–560 (1984).
O. Nittono and Y. Koyama, “Crystal structures and phase transformations in indium rich solid solutions,” Sci. Rep. RITU A29, 53–60 (1981).
O. Nitrono, H. Iwasaki, and Y. Koyama, “Phase changes and shape memory effect in In–Sn alloy crystals,” J. Jpn. Inst. Met. 44, 899–907 (1980).
Y. Koyama, T. Ukena, and O. Nittono, “Phase transformations and shape memory effect in indium lead alloys,” J. Jpn. Inst. Met. 44, 1431–1439 (1980).
A. E. Vol and I. K. Kagan, Structure and Properties of Binary Metal Systems. Book 3. Systems of Gold, Indium, Iridium, Ytterbium, and Yttrium (Nauka, Moscow, 1976).
A. L. Roitburd, “On the domain structure of crystals formed in the solid phase,” Fiz. Tverd. Tela 10, 3619–3627 (1968).
M. V. Klassen-Neklyudova, Mechanical twinning of crystals (Izd. AN SSSR, Moscow, 1960) [in Russian].
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Original Russian Text © Yu.V. Khlebnikova, L.Yu. Egorova, D.P. Rodionov, 2018, published in Fizika Metallov i Metallovedenie, 2018, Vol. 119, No. 4, pp. 365–376.
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Khlebnikova, Y.V., Egorova, L.Y. & Rodionov, D.P. Electron Microscopic Study of the Structure of Tetragonal Martensite in In–4.5% Cd Alloy. Phys. Metals Metallogr. 119, 347–357 (2018). https://doi.org/10.1134/S0031918X18040087
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DOI: https://doi.org/10.1134/S0031918X18040087