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231218|2022 sz s a eng d |
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|a 10.3390/met12111932
|2 doi
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|a koha001016462
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|b rus
|c RU-ToGU
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|a Effect of the surface oxide layer on shape memory effect and superelasticity of [011]-oriented Ti-50.1Ni single crystals
|c Y. I. Chumlyakov, I. V. Kireeva, A. A. Saraeva [et al.]
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|a Текст
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|a электронный
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|a Библиогр.: 25 назв.
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|a Effect of the surface oxide layer on the shape memory effect (SME) and superelasticity (SE) after marforming (deformation in the martensitic state, followed by annealing at 713 K for 0.5 h in an inert helium gas and in dry air) was investigated on Ti-50.1Ni (at.%) single crystals, oriented along [011]-direction, under compression. Quenched [011]-oriented crystals of the Ti-50.1Ni alloy experience a one-stage B2-B190 martensitic transformation (MT) without SE under compression. Marforming leads to a two-stage B2-R-B190 MT and creates conditions for SE. A thin TiO2 oxide layer of 170 nm thick was formed on the sample surface upon annealing at 713 K for 0.5 h in dry air. In [011]-oriented crystals without and with an oxide layer, maximum of the SE value reached 4%, and the SME was 2.4 and 2.6%, respectively. Appearance of an oxide layer upon annealing in dry air: (i) reduces the stresses of B2-phase by 50 MPa from Md to 473 K; (ii) decreases Q = ds/d# from 6.5 GPa in crystals without an oxide layer to 2.0 GPa with an oxide layer and (iii) does not affect the SME and SE values.
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|a сверхэластичность
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| 653 |
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|a эффект памяти формы
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|a сжатие
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| 653 |
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|a поверхностный оксидный слой
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|a монокристаллы
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|a статьи в журналах
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|a Chumlyakov, Yuri I.
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|a Kireeva, Irina V.
|c физик
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|a Saraeva, Anastasia A.
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|a Pobedennaya, Zinaida V.
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|a Vyrodova, Anna V.
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| 773 |
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|t Metals
|d 2022
|g Vol. 12, № 11. P. 1932 (1-13)
|x 2075-4701
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| 852 |
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|a RU-ToGU
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| 856 |
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|u http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001016462
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|a статья
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|c 1016462
|d 1016462
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