Abstract
The influence of intense plastic deformation on the formation of an ultrafine-grain state in Zr-1Nb alloy is considered, when the alloy contains secondary-phase particles in the volume and at the grain boundaries. Pressing with gradual temperature reduction in the range 973-573 K leads to solution of the secondary-phase particles and the formation of ultrafine grains and subgrains (mean size 0.25 ± 0.10 μm) in the alloy structure. In pressing at room temperature with intermediate annealing for 1 h in the range 873-803 K, ultrafine grains and subgrains (mean size 0.45 ± 0.18 μm) are formed in the alloy structure; the secondary-phase particles are retained. The formation of ultrafine-grain structure increases the strength and yield point of Zr-1Nb alloy by a factor of 1.5–2.0, with simultaneous localization of the plastic deformation and decrease in the uniform deformation; the deformation corresponding to failure is also reduced. The presence of secondary-phase particles in the ultrafine-grain structure, like the increase in grain size, prevents localization of the plastic deformation and increases the strain hardening.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Sharkeev, Yu.P., Yaroshenko, A.Yu., Kukareko, V.A., et al., Steel Transl., 2012, vol. 42, no. 8, pp. 630–633.
Golovin, K.I., Beitan, A.V., Volkova, V.A., et al., Ross. Stomatol. Zh., 2000, no. 2, pp. 40–43.
Kolobov, Yu.R., Valiev, R.Z., Grabovetskaya, G.P., et al., Zernogranichnaya diffuziya i svoistva nanostrukturnykh materialov (Grain-Boundary Diffusion and Properties of Nanostructural Materials), Novosibirsk: Nauka, 2001.
Morris, D.G., Mechanical Behaviour of Nanostructural Materials, Switzerland: Trans. Tech. Publication, 1998.
Gapontsev, V.L. and Kondrat’ev, V.V., Dokl. Akad. Nauk, 2002, vol. 385, no. 5, pp. 608–611.
Korznikov, A.V., Ivanisenko, Yu.V., and Laptionok, D.V., Nanstruct. Mater., 1994, vol. 4, pp. 159–170.
Vinokurov, V.A., Ratochka, I.V., Naidenkin, E.V., Mishin, I.P., and Rozhintseva, N.V., Russian patent 2388566, Byull. Izobret., 2010, no. 13.
Strukturnye urovni plasticheskoi deformatsii i razrusheniya (Structural Levels of Plastic Deformation and Failure), Panin, V.E., Ed., Novosibirsk: Nauka, Sib. Otd., 1990.
Dudarev, E.F., Bakach, G.P., Grabovetskaya, G.P., et al., Fiz. Mezomekhan., 2001, vol. 4, no. 1, pp. 97–104.
Naydenkin, E.V. and Grabovetskaya, G.P., J. Mater. Sci. For., 2010, vol. 533–634, pp. 107–119.
Panin, V.E., Egorushkin, V.E., and Panin, A.V., Fiz. Mezomekhan., 2006, vol. 9, no. 3, pp. 9–22.
Grabovetskaya, G.P., Mishin, I.P., and Kolobov, Yu.R., Izv. Vyssh. Uchebn. Zaved., Poroshk. Metall. Funkts. Pokryt., 2009, no. 2, pp. 38–43.
Kozlov, E.V., Zhdanov, A.N., and Koneva, N.A., Fiz. Mezomekhan., 2006, vol. 9, no. 3, pp. 81–92.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © G.P. Grabovetskaya, I.P. Mishin, E.N. Stepanova, I.P. Chernov, D.Yu. Bulynko, 2015, published in “Izvestiya VUZ. Chernaya Metallurgiya,” 2015, No. 2, pp. 106–111.
About this article
Cite this article
Grabovetskaya, G.P., Mishin, I.P., Stepanova, E.N. et al. Forming and deformation behavior of the ultrafine-grained Zr-1Nb alloy. Steel Transl. 45, 111–115 (2015). https://doi.org/10.3103/S0967091215020060
Received:
Published:
Issue Date:
DOI: https://doi.org/10.3103/S0967091215020060