Grain size effect on the martensitic transformation temperatures of nanocrystalline NiTi alloy

X.B. Shi; Z.Y. Ma; Junsong Zhang; H.L. Ding; F.M. Guo; Yinong Liu; L.S. Cui

doi:10.1088/0964-1726/24/7/072001

Grain size effect on the martensitic transformation temperatures of nanocrystalline NiTi alloy

X.B. Shi, Z.Y. Ma, Junsong Zhang, H.L. Ding, F.M. Guo, Yinong Liu, L.S. Cui

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

© 2015 IOP Publishing Ltd. The grain size effect on B19′ martensitic transformation temperatures of a nanocrystalline Ti-50.2 at%Ni alloy was investigated by differential scanning calorimetry (DSC) analysis and (TEM) observation. It was found that the R → B19′ transformation temperature decreases with decreasing grain size in the range of 50-150 nm, whilst the reverse B19′ → R transformation temperature remains independent of grain size, leading to an increase of the hysteresis with decreasing grain size. The observed effects of grain size on the characteristics of the R 虠 B19′ transformation are attributed to variations of both the elastic and the irreversible energies of the martensitic transformation in the nanograin regime.

Original language	English
Pages (from-to)	1-5
Journal	Smart Materials and Structures
Volume	24
Issue number	7
DOIs	https://doi.org/10.1088/0964-1726/24/7/072001
Publication status	Published - 2015

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abstract = "{\textcopyright} 2015 IOP Publishing Ltd. The grain size effect on B19′ martensitic transformation temperatures of a nanocrystalline Ti-50.2 at%Ni alloy was investigated by differential scanning calorimetry (DSC) analysis and (TEM) observation. It was found that the R → B19′ transformation temperature decreases with decreasing grain size in the range of 50-150 nm, whilst the reverse B19′ → R transformation temperature remains independent of grain size, leading to an increase of the hysteresis with decreasing grain size. The observed effects of grain size on the characteristics of the R 虠 B19′ transformation are attributed to variations of both the elastic and the irreversible energies of the martensitic transformation in the nanograin regime.",

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T1 - Grain size effect on the martensitic transformation temperatures of nanocrystalline NiTi alloy

AU - Shi, X.B.

AU - Ma, Z.Y.

AU - Zhang, Junsong

AU - Ding, H.L.

AU - Guo, F.M.

AU - Liu, Yinong

AU - Cui, L.S.

PY - 2015

Y1 - 2015

N2 - © 2015 IOP Publishing Ltd. The grain size effect on B19′ martensitic transformation temperatures of a nanocrystalline Ti-50.2 at%Ni alloy was investigated by differential scanning calorimetry (DSC) analysis and (TEM) observation. It was found that the R → B19′ transformation temperature decreases with decreasing grain size in the range of 50-150 nm, whilst the reverse B19′ → R transformation temperature remains independent of grain size, leading to an increase of the hysteresis with decreasing grain size. The observed effects of grain size on the characteristics of the R 虠 B19′ transformation are attributed to variations of both the elastic and the irreversible energies of the martensitic transformation in the nanograin regime.

AB - © 2015 IOP Publishing Ltd. The grain size effect on B19′ martensitic transformation temperatures of a nanocrystalline Ti-50.2 at%Ni alloy was investigated by differential scanning calorimetry (DSC) analysis and (TEM) observation. It was found that the R → B19′ transformation temperature decreases with decreasing grain size in the range of 50-150 nm, whilst the reverse B19′ → R transformation temperature remains independent of grain size, leading to an increase of the hysteresis with decreasing grain size. The observed effects of grain size on the characteristics of the R 虠 B19′ transformation are attributed to variations of both the elastic and the irreversible energies of the martensitic transformation in the nanograin regime.

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DO - 10.1088/0964-1726/24/7/072001

M3 - Article

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VL - 24

SP - 1

EP - 5

JO - Smart Materials and Structures

JF - Smart Materials and Structures

IS - 7

ER -

Grain size effect on the martensitic transformation temperatures of nanocrystalline NiTi alloy

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