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Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Eftifeeva A., Fatkullin I., Tagiltsev A., Kurlevskaya I., Volochaev M. N., Panchenko E., Chumlyakov Yu.
Заглавие : Cyclic superelasticity behavior of Co35Ni35Al28Fe2 single crystals
Колич.характеристики :5 с
Место публикации : Mater. Lett. - 2025. - Vol. 396. - Ст.138728. - ISSN 0167577X (ISSN), DOI 10.1016/j.matlet.2025.138728. - ISSN 18734979 (eISSN)
Примечания : Cited References: 11. - This study was supported by the Russian Science Foundation, project no. 23-79-10093, https://rscf.ru/project/23-79-10093/
Аннотация: The effect of cyclic loading/unloading on high-temperature superelasticity and the (B2 + γ/γ’)-microstructure was studied in quenched Co35Ni35Al28Fe2 single crystals oriented along the [001]B2-direction. They displayed excellent superelastic response in compression over 100 loading/unloading cycles at 423 K. This superelasticity response is attributed to the high-strength crystallographic [001]B2 orientation of the B2-matrix and strengthening of the γ-phase due to nanosized γ’-particles. The stress-induced B2-L10 martensitic transformation during loading/unloading cycles was accompanied by plastic deformation via twinning of the secondary γ/γ’-phase and dislocation accumulations in B2-matrix around the γ/γ’-phase. This results in a reduction in the critical stress for the martensite formation, stress hysteresis and reversible strain during cycling.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Timofeeva E. E., Panchenko E. Yu., Zherdeva M. V., Tokhmetova A. B., Tagiltsev A. I., Surikov N. Yu., Fatkullin I. D., Dmitrienko M. C., Volochaev M. N., Chumlyakov Yu. I.
Заглавие : High-temperature thermoelastic martensitic transformations in Ni44Fe19Ga27Co10 single crystals
Колич.характеристики :5 с
Место публикации : Mater. Lett. - 2025. - Vol. 380. - Ст.137744. - ISSN 0167577X (ISSN), DOI 10.1016/j.matlet.2024.137744. - ISSN 18734979 (eISSN)
Примечания : Cited References: 17. - This work was supported by the Russian Science Foundation (grant No. 24-19-00242). The electron microscopy studies were carried out on the equipment of the Krasnoyarsk Regional Center for Collective Use SB RAS
Аннотация: For the first time Ni44Fe19Ga27Co10 single crystals with high-temperature martensitic transformation (Ms = 336 K) and high-temperature superelasticity (373–548 K) under tension and compression were obtained after annealing at 1448 K for 6 h, followed by fast quenching in ice-cold salt water. The increase in temperature is associated with the precipitation of the large γ-particles and the substantial decrease in the precipitation of the nanosized ω-phase, which was observed in the single crystals after annealing at 1448 K for 1 h with slower water quenching.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Timofeeva E. E., Panchenko E. Y., Tagiltsev A. I., Larchenkova N. G., Tokhmetova A. B., Chumlyakov Y. I., Volochaev M. N.
Заглавие : Orientation dependence of superelasticity in quenched high-nickel Ti-51.8Ni single crystals
Место публикации : Mater. Lett. - 2021. - Vol. 282. - Ст.128677. - ISSN 0167577X (ISSN), DOI 10.1016/j.matlet.2020.128677
Примечания : Cited References: 12. - This work was supported by the Russian Science Foundation (grant No. 18–19–00298 ). The electron microscopy studies were carried out on the equipment of the Krasnoyarsk Regional Center for Collective Use SB RAS
Аннотация: The orientation dependence of the functional and mechanical properties of quenched Ti-51.8at.%Ni single crystals, undergoing a strain-glass transition upon cooling/heating was investigated. It was found that a compressive stress above 800 MPa leads to the B2-B19′ martensitic transformation (MT), regardless of orientation. In the high-strength [0 0 1]-orientation, superelasticity (SE) was observed at 203–248 K, with a reversible strain of 2.3%. Degradation of SE at deforming stresses σ 1000 MPa was associated with the formation of {1 1 3}B2 twins during the reverse MT. In the low-strength [1 1 1]-orientation, the formation of stress-induced B19′-martensite occurred simultaneously with the plastic deformation of the B2-phase (due to the formation of reorientation bands and dislocation slip) and a reversible strain was not observed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Eftifeeva, Anna S., Panchenko, Elena Y., Fatkullin, Ilya D., Volochaev M. N., Tagiltsev, Anton I., Chumlyakov, Yuriy I.
Заглавие : The cyclic stability of superelasticity in aged Ti49.3Ni50.7 single crystals with oxide surface
Место публикации : Metals. - 2022. - Vol. 12, Is. 12. - Ст.2113. - ISSN 20754701 (eISSN), DOI 10.3390/met12122113
Примечания : Cited References: 30. - This research was funded by grant under the Decree of the Government of the Russian Federation No. 220 of 9 April 2010 (Agreement No. 075-15-2021-612 of 4 June 2021)
Аннотация: The cyclic stability of superelasticity in compression in [001]B2-oriented Ti49.3Ni50.7 single crystals is considered in this paper. The crystals were aged at 823 K for 1.0 h in air and helium. It has been experimentally shown that a two-layered surface thin film, consisting of a Ni-free oxide layer and a Ni-rich sublayer, appears after the oxidation at 823 K in air. The surface layers have a weak effect on the forward B2-R-B19’ martensitic transformation temperatures: TR temperature increases by 4 K; Ms and Mf temperatures decrease by 6 K. The oxide layer does not affect either the superelasticity response during fatigue tests or the temperatures of reverse B19’-B2 martensitic transformation. The cracking of the surface oxide layer during fatigue tests was not found in [001]B2-oriented single crystals aged in air. This is contributed by the relaxation of internal stresses. Such internal stresses are caused by both the formation of an oxide layer during aging and the matrix deformation at the stress-induced martensitic transformation. The main relaxation mechanisms of the internal stresses are the oriented growth of Ti3Ni4 precipitation near a thin surface film at aging in air, the formation of dislocations near the precipitation-matrix interface and a fine twinned B19’-martensite at fatigue tests.
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