Влияние режимов двухступенчатого старения на эффект памяти формы и сверхэластичность в высоконикелевых монокристаллах TiNi М. В. Жердева, Е. Е. Тимофеева
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ArticleContent type: Текст Media type: электронный Other title: Influence of two-stage aging regimes on the effect of shape memory and superelasticity in high nickel single crystals TiNi [Parallel title]Subject(s): двухступенчатое старение | никель-титановые сплавы | сверхэластичность | экспериментальные исследованияGenre/Form: статьи в сборниках Online resources: Click here to access online
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Перспективы развития фундаментальных наук. Т. 1 : сборник научных трудов XVIII Международной конференции студентов, аспирантов и молодых ученых, 27–30 апреля 2021 г Т. 1 : Физика. С. 127-129Abstract: In this work researched the influence of the load applied during aging on the regularities of the development of martensitic transformations (MT) and the shape memory effect (SME) in high-nickel single crystals of Ti-51.7at. % Ni, in which, due to two-stage aging at 823 K + 673 K a bimodal size distribution of Ti3Ni4 particles (large + small) has been formed. Aging at 823 K, 1 h under load and in the free state, crystals with one and four variants of large Ti3Ni4 particles were obtained. In crystals aged under load, in comparison with those aged in a free state, the MF temperatures increase (MS increases by 30 K), thermal hysteresis decreases (1,6 times), the maximum reversible deformation during SME development is observed at stresses 5 times lower.
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In this work researched the influence of the load applied during aging on the regularities of the development of martensitic transformations (MT) and the shape memory effect (SME) in high-nickel single crystals of Ti-51.7at. % Ni, in which, due to two-stage aging at 823 K + 673 K a bimodal size distribution of Ti3Ni4 particles (large + small) has been formed. Aging at 823 K, 1 h under load and in the free state, crystals with one and four variants of large Ti3Ni4 particles were obtained. In crystals aged under load, in comparison with those aged in a free state, the MF temperatures increase (MS increases by 30 K), thermal hysteresis decreases (1,6 times), the maximum reversible deformation during SME development is observed at stresses 5 times lower.
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