The Evolution of the Microstructure and System of Ti3Ni4 Particles upon Heat Treatments of a Ti−50.9 at % Ni Nanocrystalline Alloy
- Authors: Poletika T.M.1, Girsova S.L.1, Lotkov A.I.1, Krukovskii K.V.1
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Affiliations:
- Institute of Strength Physics and Material Science, Siberian Branch, Russian Academy of Sciences
- Issue: Vol 64, No 4 (2019)
- Pages: 490-496
- Section: Solid State
- URL: https://journals.rcsi.science/1063-7842/article/view/203217
- DOI: https://doi.org/10.1134/S1063784219040182
- ID: 203217
Cite item
Abstract
The structure of a Ti−(50.9 at % Ni) nanocrystalline alloy is studied by transmission electron microscopy after annealing at 300−500°C. It is found that B2-TiNi solid solution decomposition according to a heterogeneous mechanism with formation of Ti3Ni4 particles develops in the subgrain structure and is suppressed in nanograins. The regularities of recovery, polygonization, and recrystallization in the grain/subgrain structure of a nanocrystalline TiNi alloy are established and their interconnection with processes of dissolution and coagulation of Ti3Ni4 particles is identified.
About the authors
T. M. Poletika
Institute of Strength Physics and Material Science, Siberian Branch, Russian Academy of Sciences
Author for correspondence.
Email: poletm@ispms.tsc.ru
Russian Federation, Tomsk, 634055
S. L. Girsova
Institute of Strength Physics and Material Science, Siberian Branch, Russian Academy of Sciences
Email: poletm@ispms.tsc.ru
Russian Federation, Tomsk, 634055
A. I. Lotkov
Institute of Strength Physics and Material Science, Siberian Branch, Russian Academy of Sciences
Email: poletm@ispms.tsc.ru
Russian Federation, Tomsk, 634055
K. V. Krukovskii
Institute of Strength Physics and Material Science, Siberian Branch, Russian Academy of Sciences
Email: poletm@ispms.tsc.ru
Russian Federation, Tomsk, 634055