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Effect of Annealing on the Mechanical and Thermomechanical Characteristics of the Ti50Pd40Ni10 High-Temperature Shape Memory Alloy Studied on the Rod-Like Blank

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Abstract

The properties of the Ti50Pd40Ni10 (at %) alloy showing the high-temperature shape memory effect are studied in detail using samples made of a 5.86 mm bar under various conditions of annealing and induced deformation. The data on the phase transformation temperatures and the mechanical and thermomechanical characteristics of the alloy are obtained. The range of phase transformations occurs in the range from Mf = 360°C to Af = 439°C. These are acceptable values for creating the required safety device. The maximum values of the shape memory effect and the degree of shape recovery are 2.4 and 43%, respectively. This is not sufficient to create a functional security device. Thus, the selection of annealing modes and conditions for inducing deformation are not a successful way to substantially increase the thermomechanical characteristics of the alloy. Higher values of thermomechanical characteristics have previously been obtained using samples cut from a strip with a thickness of 2.04 mm. Therefore, operating elements of safety devices designed for nuclear power facilities will be further manufactured from the strip.

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Authors and Affiliations

  1. Russian Federal Nuclear Center All-Russian Research Institute of Experimental Physics, 607188, Sarov, Nizhny Novgorod oblast, Russia

    N. N. Popov, D. V. Presnyakov, V. F. Lar’kin, I. S. Ryzhov & A. A. Kostyleva

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  1. N. N. Popov
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  2. D. V. Presnyakov
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  3. V. F. Lar’kin
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  4. I. S. Ryzhov
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  5. A. A. Kostyleva
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Correspondence to N. N. Popov.

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Translated by O. Kadkin

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Popov, N.N., Presnyakov, D.V., Lar’kin, V.F. et al. Effect of Annealing on the Mechanical and Thermomechanical Characteristics of the Ti50Pd40Ni10 High-Temperature Shape Memory Alloy Studied on the Rod-Like Blank. Phys. Metals Metallogr. 121, 811–816 (2020). https://doi.org/10.1134/S0031918X20080074

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  • DOI: https://doi.org/10.1134/S0031918X20080074

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