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А. V. Pushin, E. S. Belosludtseva, N. N. Kuranova, V. G. Pushin

FEATURES OF LOW-TEMPERATURE CRYSTALLIZATION OF Ti2NiCu AMORPHIZED BY THE METHOD OF SPINNING FROM MELT

DOI: 10.17804/2410-9908.2018.6.051-058

Ti50Ni25Cu25 alloy ribbons of different thicknesses have been obtained by rapid quenching from the melt by spinning; the structural and phase transformations during synthesis and subsequent thermal treatment are studied. The investigations are performed by X-ray diffraction, analytical transmission and scanning electron microscopy, electron microdiffraction, including in situ, during heating and cooling in an electron microscope. The features of the initial amorphizied structure of the ribbons and the mechanisms of their crystallization during heating are established, as well as the thermokinetic conditions and peculiarities of the formation of ultrafine-grained structure. It has been found that the structural states in the ribbons of both types are significantly different both in the initial amorphizied state and after complete crystallization into B2 austenite under heating, as well as after cooling to room temperature resulting in the B2®B19 thermoelastic martensitic transformation.

Acknowledgments: The work was performed on theme No. АААА-А18-118020190116-6 (Structure) and supported by UB RAS project No. 18-10-2-39

Keywords: rapid quenching from melt, phase transformations, microstructure, amorphization, shape memory effect

References:

1. Likhachev V.А., Kuzmin S.L., Kamentseva Z.P. Effect pamyati formy [Shape Memory Effect]. Leningrad, LGU Publ., 1987, 218 p. (In Russian).

2. Precision Machinery and Robotics, vol. 1, ed. H Funakubo, New York, Gordon and Breach Sci. Publ., 1987.

3. Pushin V.G., Kondrat’ev V.V., Khachin V.N. Predperekhodnye yavleniya i martensitnye prevrashcheniya [Pretransition Phenomena and Martensitic Transformations]. Yekaterinburg, Izd-vo UrO RAN Publ., 1998, 368 p. (In Russian).

4. Pushin V.G., Prokoshkin S.D., Valiev R.Z. et al., Splavy nikelida titana s pamyat’yu formy, Ch. I: Struktura, fazovye prevrashcheniya i svoistva [Titanium Nickelide Alloys with Shape Memory, part I: Structure, Phase Transitions, and Properties]. Yekaterinburg, UrO RAN Publ., 2006, 440 p. (In Russian).

5. Pushin V.G., Volkova S.B., Matveeva N.M. Structural and Phase Transformations in Quasi-binary TiNi–TiCu Alloys Rapidly Quenched from the Melt: I. High-Copper Amorphous Alloys. Physics of Metals and Metallography, 1997, vol. 83, no. 3, pp. 275–282.

6. Pushin V.G., Volkova S.B., Matveeva N.M., Yurchenko L.I., Chistyakov A.S. Structural and Phase Transformations in Quasi-Binary TiNi–TiCu Alloys Rapidly Quenched from the Melt: IV. The Microstructure of Crystalline Alloys. Physics of Metals and Metallography, 1997, vol. 83, no. 6, pp. 673–678.

7.  Pushin A.V., Popov A.A., Pushin V.G. Effect of the deviation of the chemical composition from the stoichiometric composition on the structural and phase transformations and properties of rapidly quenched Ti50+xNi25–xCu25 alloys. Physics of Metals and Metallography, 2012, vol. 113, no. 3, pp. 283–294. DOI: 10.1134/S0031918X12030131.

8. Pushin A.V., Popov A.A., Pushin V.G. Effect of Deviations of Composition from the Quasi-Binary Section TiNi–TiCu on Structural and Phase Transformations in Rapidly Quenched Alloys. Physics of Metals and Metallography, 2013, vol. 114, no. 8, pp. 692–702. DOI: 10.1134/S0031918X13060136.

9. Khachin V.N., Pushin V.G., Kondrat’ev V.V. Nikelid titana: struktura i svoistva [Titanium Nickelide: Structure and Properties]. Moscow, Nauka Publ., 1992, 160 p. (In Russian).

       

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Article reference

Features of Low-Temperature Crystallization of Ti2nicu Amorphized by the Method of Spinning from Melt / А. V. Pushin, E. S. Belosludtseva, N. N. Kuranova, V. G. Pushin // Diagnostics, Resource and Mechanics of materials and structures. - 2018. - Iss. 6. - P. 51-58. -
DOI: 10.17804/2410-9908.2018.6.051-058. -
URL: http://eng.dream-journal.org/issues/2018-6/2018-6_233.html
(accessed: 03/29/2024).

 

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