Kinetics of isothermal B2 → B19′ martensitic transformation in Ti49Ni51 shape memory alloy

N. Resnina, S. Belyaev, E. Demidova, Алексей Максимович Иванов, Владимир Александрович Андреев

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

Abstract

The B2 → B19′ martensitic transformation in a quenched Ni-rich NiTi alloy was found to proceed under isothermal conditions at temperatures both within and outside of the transformation temperature range as observed during continuous cooling measurement. The variation in the volume fraction of the martensite that appeared during isothermal holding of quenched Ni-rich NiTi alloy at different temperatures T was measured. It was found that the maximum volume fraction of the martensite (45%) appeared during holding at Ms temperature for 30 min. It was found that the kinetics of the isothermal transformation was different for T > Ms and T < Ms due to the different structure of the alloy before holding that might influence the mechanisms of the martensite formation.

Original languageEnglish
Pages (from-to)348-350
Number of pages3
JournalMaterials Letters
Volume228
DOIs
StatePublished - 1 Oct 2018

Keywords

  • Isothermal martensitic transformation
  • NiTi alloy
  • Shape memory materials
  • Thermodynamics and kinetics of processes in materials

Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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title = "Kinetics of isothermal B2 → B19′ martensitic transformation in Ti49Ni51 shape memory alloy",
abstract = "The B2 → B19′ martensitic transformation in a quenched Ni-rich NiTi alloy was found to proceed under isothermal conditions at temperatures both within and outside of the transformation temperature range as observed during continuous cooling measurement. The variation in the volume fraction of the martensite that appeared during isothermal holding of quenched Ni-rich NiTi alloy at different temperatures T∗ was measured. It was found that the maximum volume fraction of the martensite (45{\%}) appeared during holding at Ms temperature for 30 min. It was found that the kinetics of the isothermal transformation was different for T∗ > Ms and T∗ < Ms due to the different structure of the alloy before holding that might influence the mechanisms of the martensite formation.",
keywords = "Isothermal martensitic transformation, NiTi alloy, Shape memory materials, Thermodynamics and kinetics of processes in materials",
author = "N. Resnina and S. Belyaev and E. Demidova and Иванов, {Алексей Максимович} and Андреев, {Владимир Александрович}",
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journal = "Materials Letters",
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Kinetics of isothermal B2 → B19′ martensitic transformation in Ti49Ni51 shape memory alloy. / Resnina, N.; Belyaev, S.; Demidova, E.; Иванов, Алексей Максимович; Андреев, Владимир Александрович.

In: Materials Letters, Vol. 228, 01.10.2018, p. 348-350.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Kinetics of isothermal B2 → B19′ martensitic transformation in Ti49Ni51 shape memory alloy

AU - Resnina, N.

AU - Belyaev, S.

AU - Demidova, E.

AU - Иванов, Алексей Максимович

AU - Андреев, Владимир Александрович

PY - 2018/10/1

Y1 - 2018/10/1

N2 - The B2 → B19′ martensitic transformation in a quenched Ni-rich NiTi alloy was found to proceed under isothermal conditions at temperatures both within and outside of the transformation temperature range as observed during continuous cooling measurement. The variation in the volume fraction of the martensite that appeared during isothermal holding of quenched Ni-rich NiTi alloy at different temperatures T∗ was measured. It was found that the maximum volume fraction of the martensite (45%) appeared during holding at Ms temperature for 30 min. It was found that the kinetics of the isothermal transformation was different for T∗ > Ms and T∗ < Ms due to the different structure of the alloy before holding that might influence the mechanisms of the martensite formation.

AB - The B2 → B19′ martensitic transformation in a quenched Ni-rich NiTi alloy was found to proceed under isothermal conditions at temperatures both within and outside of the transformation temperature range as observed during continuous cooling measurement. The variation in the volume fraction of the martensite that appeared during isothermal holding of quenched Ni-rich NiTi alloy at different temperatures T∗ was measured. It was found that the maximum volume fraction of the martensite (45%) appeared during holding at Ms temperature for 30 min. It was found that the kinetics of the isothermal transformation was different for T∗ > Ms and T∗ < Ms due to the different structure of the alloy before holding that might influence the mechanisms of the martensite formation.

KW - Isothermal martensitic transformation

KW - NiTi alloy

KW - Shape memory materials

KW - Thermodynamics and kinetics of processes in materials

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DO - 10.1016/j.matlet.2018.06.055

M3 - Article

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EP - 350

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JF - Materials Letters

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