Precipitation of secondary phases in quenched alloy Ti – 14% Mo during continuous heating at a rate of 5 K/min is studied. Using quantitative methods of analytical transmission electron microscopy and x-ray structural phase analysis in situ presence within the alloy of athermal ω-phase is established, quenched from the β-range, whose lattice constants differ somewhat from the tabulated values. On heating there is precipitation of isothermal ω-phase with spacings approximating tabulated values, and at temperatures above 500°C there is formation of α-phase particles within the alloy structure. The effect of precipitated second phases particles on alloy hardness is determined.
Similar content being viewed by others
References
S. P. Belov, M. Ya. Brun, and S. G. Glazunov, Titanium and its Alloys Material Science [in Russian], Metallurgiya, Moscow (1992).
M. Sabeena, Alphy George, S. Murugesan, et al., “Microstructural characterization of transformation products of bcc in Ti – 15Mo alloy,” J. Alloys Compd., 658, 301 – 315 (2016).
S. Banerjee and P. Mukhopadhyay, Phase Transformations: Examples from Titanium and Zirconium Alloys, Pergamon Materials Series, Elsevier (2007).
S. Banerjee, R. Tevari, and G. K. Dey, “Omega phase transformation — morphologies and mechanisms,” Int. J. Mater. Res. (formerly Z. Metallkd.), 97, 963 – 977 (2006).
A. G. Ilariyonov, A. A. Popov, S. V. Grib, and O. A. Elkina, “Features of ω-phase formation in titanium alloys on quenching Metalloved. Term. Obrab. Met., No. 10(664), 39 – 44 (2010).
J. Šmilauerová, P. Harcuba, J. Stráský, et al., “Ordered array of ω particles in β-Ti matrix studied by small-angle x-ray scattering,” Acta Mater., 81, 71 – 82 (2014).
Yu. A. Bagaryatskii and G. I. Nosiva, “Transformation of β → ω in titanium alloys on quenching — special class of martensitic transformation,” Fiz. Met. Matalloved., No. 13(3), 415 – 425 (1962).
A. G. Ilarionov, A. V. Korelin, A. A. Popov, et al., “Formation of structure, phase composition, and properties of high-strength titanium alloy during isothermal thermomechanical treatment,” Fiz. Met. Matalloved., 119(8), 827 – 835 (2018).
A. A. Il’in, Phase and Structural Transformation Mechanism and Kinetics in Titanium Alloys [in Russian], Nauka, Moscow (1994).
P. Zháòal, P. Harcuba, M. Hájek, et al., “Evolution of ω phase during heating of metastable β titanium alloy Ti – 15Mo,” Mater. Sci., 5, 837 – 845 (2018).
A. A. Popov, “Metastable β-phase decomposition processes in highly alloyed titanium alloys,” Fiz. Met. Matalloved., No. 53, 147 – 156 (1993).
P. Zháòal, P. Harcuba, J. Stráský, et al., “Transformation pathway upon heating of metastable titanium alloy Ti – 15Mo investigated by neutron diffraction,” Materials, 12, 3570 (2019).
Y. Zheng, R. E. A. Williams, D. Wang, et al., “Role of ω phase in the formation of extremely refined intragranular precipitates in metastable β-titanium alloys,” Acta Mater., 103, 850 – 858 (2016).
Y. Zheng, R. E. A.Williams, and H. L. Fraser, “Characterization of previously unidentified ordered orthorhombic metastable phase in Ti – 5Al – 5Mo – 5V – 3Cr,” Scr. Mater., 113, 202 – 205 (2016).
Y. Zheng, D. Banerjee, and H. L. Fraser, “A nano-scale instability in the β-phase of dilute Ti – Mo alloys,” Scr. Mater., 116, 131 – 134 (2016).
Y. Zheng, S. Antonov, Q. Feng, et al., “Shuffle-induced modulated structure and heating-induced ordering in metastable β-titanium alloy, Ti – 5Al – 5Mo – 5V – 3Cr,” Scr. Mater., 176, 7 – 11 (2020).
E. A. Boriseva, G. A. Bochvar,M. Ya. Brun, and S. G. Glazunov, Titanium Alloy Metallography [in Russian], Metallurgiya, Moscow (1980).
A. A. Popov, L. I. Anisimova, and V. D. Kibal’nik, “Study of metastable beta-phase decomposition during titanium alloy continuous heating,” Fiz. Met. Matalloved., 52(4), 829 – 837 (1981).
Work conducted with financial support of RF Ministry according to state assignment No. 0836-2020-0020.
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 18 – 22, March, 2022.
Rights and permissions
Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Petrova, A.O., Popov, A.A., Popov, N.A. et al. Second Phase Precipitation on Heating Quenched Ti – 14% Mo Alloy. Met Sci Heat Treat 64, 151–155 (2022). https://doi.org/10.1007/s11041-022-00776-z
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11041-022-00776-z