Abstract
The strength and plastic properties and the shape memory effect and superelasticity parameters of thin (30–90 μm in diameter) TiNi-based filaments have been investigated. The strength properties of the filaments are found to increase when the filament diameter decreases from 90 to 30 μm, and the plastic properties decrease in this case. The parameters of the two-way shape memory effect of the ultrathin nickel–titanium filaments depend on the size factor. The thin TiNi-based filaments are shown to exhibit high superelastic properties, and the maximum superelasticity temperature depends on the size factor.
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Funding
The results of studying the physicomechanical properties, the two-way SME, and the SE parameters were obtained in terms of a state assignment of the Ministry of Education and Science of the Russian Federation, project no. 0721-2020-0022.
The investigations of the microstructure and the elemental composition of the filaments were supported by grant no. MK-510.2019.8 of the President of the Russian Federation.
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Translated by K. Shakhlevich
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Monogenov, A.N., Gyunter, V.E., Anikeev, S.G. et al. Effect of the Size Factor on the Strength and Plastic Properties, the Shape Memory Effect, and the Superelasticity of TiNi-Based Thin Filaments. Russ. Metall. 2020, 1116–1121 (2020). https://doi.org/10.1134/S0036029520100183
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DOI: https://doi.org/10.1134/S0036029520100183