Pre-martensitic phenomena in Ti40.7Hf9.5Ni44.8Cu5 shape memory alloy

N. Resnina, S. Belyaev, A. Shelyakov, V. Rubanik, V. Jr. Rubanik, R. Konopleva, V. Chekanov, E. Ubyivovk, M. Krzhizhanovskaya

Research output: Contribution to journalArticleResearch

6 Citations (Scopus)

Abstract

Pre-martensitic phenomena such as abnormal resistivity growth, diffusion scattering, "tweed" contrast and internal friction peak were observed in Ti40.7Hf9.5Ni44.8Cu5 alloy prior to the forward martensitic transformation on cooling. It was shown that all the observed phenomena were due to the formation of quasi-static strain nanodomains in the B2 phase prior to the forward martensitic transformation. This led to accumulation of the elastic energy before the phase transition and resulted in the variation in thermodynamic balance for the forward martensitic transformation and, as a result, influenced the parameters of the phase transition. The appearance of elastic energy prior to the forward transformation caused a decrease in the forward and reverse martensitic transformations' start temperatures, a widening of the temperature range of the reverse transformation and an increase in the hysteresis of the transformation. © 2015 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)69-74
Number of pages6
JournalIntermetallics
Volume67
Issue number17
DOIs
StatePublished - 2015

Keywords

  • Differential scanning calorimetry
  • Diffraction/scattering (electron, neutron and X-ray)
  • Martensitic transformation
  • Point defects
  • Shape-memory alloys

Cite this

Resnina, N. ; Belyaev, S. ; Shelyakov, A. ; Rubanik, V. ; Rubanik, V. Jr. ; Konopleva, R. ; Chekanov, V. ; Ubyivovk, E. ; Krzhizhanovskaya, M. / Pre-martensitic phenomena in Ti40.7Hf9.5Ni44.8Cu5 shape memory alloy. In: Intermetallics. 2015 ; Vol. 67, No. 17. pp. 69-74.
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title = "Pre-martensitic phenomena in Ti40.7Hf9.5Ni44.8Cu5 shape memory alloy",
abstract = "Pre-martensitic phenomena such as abnormal resistivity growth, diffusion scattering, {"}tweed{"} contrast and internal friction peak were observed in Ti40.7Hf9.5Ni44.8Cu5 alloy prior to the forward martensitic transformation on cooling. It was shown that all the observed phenomena were due to the formation of quasi-static strain nanodomains in the B2 phase prior to the forward martensitic transformation. This led to accumulation of the elastic energy before the phase transition and resulted in the variation in thermodynamic balance for the forward martensitic transformation and, as a result, influenced the parameters of the phase transition. The appearance of elastic energy prior to the forward transformation caused a decrease in the forward and reverse martensitic transformations' start temperatures, a widening of the temperature range of the reverse transformation and an increase in the hysteresis of the transformation. {\circledC} 2015 Elsevier Ltd. All rights reserved.",
keywords = "Differential scanning calorimetry, Diffraction/scattering (electron, neutron and X-ray), Martensitic transformation, Point defects, Shape-memory alloys",
author = "N. Resnina and S. Belyaev and A. Shelyakov and V. Rubanik and Rubanik, {V. Jr.} and R. Konopleva and V. Chekanov and E. Ubyivovk and M. Krzhizhanovskaya",
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Pre-martensitic phenomena in Ti40.7Hf9.5Ni44.8Cu5 shape memory alloy. / Resnina, N.; Belyaev, S.; Shelyakov, A.; Rubanik, V.; Rubanik, V. Jr.; Konopleva, R.; Chekanov, V.; Ubyivovk, E.; Krzhizhanovskaya, M.

In: Intermetallics, Vol. 67, No. 17, 2015, p. 69-74.

Research output: Contribution to journalArticleResearch

TY - JOUR

T1 - Pre-martensitic phenomena in Ti40.7Hf9.5Ni44.8Cu5 shape memory alloy

AU - Resnina, N.

AU - Belyaev, S.

AU - Shelyakov, A.

AU - Rubanik, V.

AU - Rubanik, V. Jr.

AU - Konopleva, R.

AU - Chekanov, V.

AU - Ubyivovk, E.

AU - Krzhizhanovskaya, M.

PY - 2015

Y1 - 2015

N2 - Pre-martensitic phenomena such as abnormal resistivity growth, diffusion scattering, "tweed" contrast and internal friction peak were observed in Ti40.7Hf9.5Ni44.8Cu5 alloy prior to the forward martensitic transformation on cooling. It was shown that all the observed phenomena were due to the formation of quasi-static strain nanodomains in the B2 phase prior to the forward martensitic transformation. This led to accumulation of the elastic energy before the phase transition and resulted in the variation in thermodynamic balance for the forward martensitic transformation and, as a result, influenced the parameters of the phase transition. The appearance of elastic energy prior to the forward transformation caused a decrease in the forward and reverse martensitic transformations' start temperatures, a widening of the temperature range of the reverse transformation and an increase in the hysteresis of the transformation. © 2015 Elsevier Ltd. All rights reserved.

AB - Pre-martensitic phenomena such as abnormal resistivity growth, diffusion scattering, "tweed" contrast and internal friction peak were observed in Ti40.7Hf9.5Ni44.8Cu5 alloy prior to the forward martensitic transformation on cooling. It was shown that all the observed phenomena were due to the formation of quasi-static strain nanodomains in the B2 phase prior to the forward martensitic transformation. This led to accumulation of the elastic energy before the phase transition and resulted in the variation in thermodynamic balance for the forward martensitic transformation and, as a result, influenced the parameters of the phase transition. The appearance of elastic energy prior to the forward transformation caused a decrease in the forward and reverse martensitic transformations' start temperatures, a widening of the temperature range of the reverse transformation and an increase in the hysteresis of the transformation. © 2015 Elsevier Ltd. All rights reserved.

KW - Differential scanning calorimetry

KW - Diffraction/scattering (electron, neutron and X-ray)

KW - Martensitic transformation

KW - Point defects

KW - Shape-memory alloys

U2 - 10.1016/j.intermet.2015.07.018

DO - 10.1016/j.intermet.2015.07.018

M3 - Article

VL - 67

SP - 69

EP - 74

JO - Intermetallics

JF - Intermetallics

SN - 0966-9795

IS - 17

ER -