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Influence of the number of particle variants on the cyclic stability of superelasticity in Ti-51.5at.%Ni single crystals.

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Title: Influence of the number of particle variants on the cyclic stability of superelasticity in Ti-51.5at.%Ni single crystals.
Authors: Timofeeva, E.E.1 (AUTHOR), Zherdeva, M.V.1 (AUTHOR), Tagiltsev, A.I.1 (AUTHOR) antontgl@mail.tsu.ru, Panchenko, E.Yu.1 (AUTHOR), Chumlyakov, Yu.I.1 (AUTHOR)
Source: Materials Letters. Oct2024, Vol. 372, pN.PAG-N.PAG. 1p.
Subjects: Single crystals, Martensitic transformations, Crystals
Abstract: • Cyclic stability of high-temperature superelasticity was determined in Ti-51.5at.%Ni. • Stress-free and stress-assisted aged 〈0 0 1〉 -oriented single crystals were studied. • The number of Ti 3 Ni 4 particle variants effected on the cyclic stability. • Four particle variants provided higher cyclic stability than one variant. • It results from the different strength properties of the B2-phase and B19′-martensite. The influence of the crystallographic variants of Ti 3 Ni 4 particles on the cyclic stability of the high-temperature superelasticity of 〈0 0 1〉 -oriented Ti-51.5at.%Ni single crystals after stress-free and stress-assisted aging at 823 K for 1 h was investigated for the first time. After stress-assisted aging, the single crystals exhibited low cyclic stability of superelasticity (irreversible strain was 5.2 %, and critical stresses decreased by 14 %). After cycling, single dislocations and {1 1 5} B2 twins were observed, as a consequence of B2-B19′-B2 martensitic transformations. After stress-free aging, single crystals showed high cyclic stability: critical stresses were practically unchanged, and the irreversible strain did not exceed 0.2 %. No defects were found after cyclic testing; the stress-free aged crystals had the high strength properties of the B2-phase (2100 MPa) and B19′-martensite (>2700 MPa), in contrast to the stress-assisted aged single crystals, which had the strength properties of the B2-phase, 1630 MPa, and B19′-martensite, 1650 MPa. [ABSTRACT FROM AUTHOR]
Copyright of Materials Letters is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 178907762
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Influence of the number of particle variants on the cyclic stability of superelasticity in Ti-51.5at.%Ni single crystals.
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  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Timofeeva%2C+E%2EE%2E%22">Timofeeva, E.E.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zherdeva%2C+M%2EV%2E%22">Zherdeva, M.V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tagiltsev%2C+A%2EI%2E%22">Tagiltsev, A.I.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> antontgl@mail.tsu.ru</i><br /><searchLink fieldCode="AR" term="%22Panchenko%2C+E%2EYu%2E%22">Panchenko, E.Yu.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chumlyakov%2C+Yu%2EI%2E%22">Chumlyakov, Yu.I.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+Letters%22">Materials Letters</searchLink>. Oct2024, Vol. 372, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Single+crystals%22">Single crystals</searchLink><br /><searchLink fieldCode="DE" term="%22Martensitic+transformations%22">Martensitic transformations</searchLink><br /><searchLink fieldCode="DE" term="%22Crystals%22">Crystals</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • Cyclic stability of high-temperature superelasticity was determined in Ti-51.5at.%Ni. • Stress-free and stress-assisted aged 〈0 0 1〉 -oriented single crystals were studied. • The number of Ti 3 Ni 4 particle variants effected on the cyclic stability. • Four particle variants provided higher cyclic stability than one variant. • It results from the different strength properties of the B2-phase and B19′-martensite. The influence of the crystallographic variants of Ti 3 Ni 4 particles on the cyclic stability of the high-temperature superelasticity of 〈0 0 1〉 -oriented Ti-51.5at.%Ni single crystals after stress-free and stress-assisted aging at 823 K for 1 h was investigated for the first time. After stress-assisted aging, the single crystals exhibited low cyclic stability of superelasticity (irreversible strain was 5.2 %, and critical stresses decreased by 14 %). After cycling, single dislocations and {1 1 5} B2 twins were observed, as a consequence of B2-B19′-B2 martensitic transformations. After stress-free aging, single crystals showed high cyclic stability: critical stresses were practically unchanged, and the irreversible strain did not exceed 0.2 %. No defects were found after cyclic testing; the stress-free aged crystals had the high strength properties of the B2-phase (2100 MPa) and B19′-martensite (>2700 MPa), in contrast to the stress-assisted aged single crystals, which had the strength properties of the B2-phase, 1630 MPa, and B19′-martensite, 1650 MPa. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials Letters is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.matlet.2024.137076
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      – Code: eng
        Text: English
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      – SubjectFull: Martensitic transformations
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      – SubjectFull: Crystals
        Type: general
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      – TitleFull: Influence of the number of particle variants on the cyclic stability of superelasticity in Ti-51.5at.%Ni single crystals.
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            NameFull: Timofeeva, E.E.
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              M: 10
              Text: Oct2024
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              Y: 2024
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