Thermal cycling stability mechanism of Ti50.5Ni33.5Cu11.5Pd4.5 shape memory alloy with near-zero hysteresis

X. L. Meng; H. Li; W. Cai; S. J. Hao; L. S. Cui

doi:10.1016/j.scriptamat.2015.02.030

Thermal cycling stability mechanism of Ti_50.5Ni_33.5Cu_11.5Pd_4.5 shape memory alloy with near-zero hysteresis

X. L. Meng^*
, H. Li
, W. Cai
, S. J. Hao
, L. S. Cui

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
China University of Petroleum - Beijing

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

51 Scopus citations

Abstract

After 5000 thermal cycles, the change of the transformation temperature is less than 1°C in a Ti_50.5Ni_33.5Cu_11.5Pd_4.5 alloy. Also, the hysteresis becomes smaller nearing zero. Using thermal dynamic calculations, the elastic energy is nearly unchanged during the thermal cycles, which means there is little addition of the irreversible energy. The transmission electron microscopy observations show that the irreversible defects such as dislocations are rare in the reciprocating phase transition processes. Both of these explain the high thermal stability mechanism.

Original language	English
Pages (from-to)	30-33
Number of pages	4
Journal	Scripta Materialia
Volume	103
DOIs	https://doi.org/10.1016/j.scriptamat.2015.02.030
State	Published - 1 Jul 2015

Keywords

(SMAs)
(TEM)
Martensitic phase transformation
Shape memory alloys
Thermodynamics
Ti-Ni-Cu-Pd alloy
Transmission electron microscopy

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10.1016/j.scriptamat.2015.02.030

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title = "Thermal cycling stability mechanism of Ti50.5Ni33.5Cu11.5Pd4.5 shape memory alloy with near-zero hysteresis",

abstract = "After 5000 thermal cycles, the change of the transformation temperature is less than 1°C in a Ti50.5Ni33.5Cu11.5Pd4.5 alloy. Also, the hysteresis becomes smaller nearing zero. Using thermal dynamic calculations, the elastic energy is nearly unchanged during the thermal cycles, which means there is little addition of the irreversible energy. The transmission electron microscopy observations show that the irreversible defects such as dislocations are rare in the reciprocating phase transition processes. Both of these explain the high thermal stability mechanism.",

keywords = "(SMAs), (TEM), Martensitic phase transformation, Shape memory alloys, Thermodynamics, Ti-Ni-Cu-Pd alloy, Transmission electron microscopy",

author = "Meng, \{X. L.\} and H. Li and W. Cai and Hao, \{S. J.\} and Cui, \{L. S.\}",

year = "2015",

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day = "1",

doi = "10.1016/j.scriptamat.2015.02.030",

language = "英语",

volume = "103",

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TY - JOUR

T1 - Thermal cycling stability mechanism of Ti50.5Ni33.5Cu11.5Pd4.5 shape memory alloy with near-zero hysteresis

AU - Meng, X. L.

AU - Li, H.

AU - Cai, W.

AU - Hao, S. J.

AU - Cui, L. S.

PY - 2015/7/1

Y1 - 2015/7/1

N2 - After 5000 thermal cycles, the change of the transformation temperature is less than 1°C in a Ti50.5Ni33.5Cu11.5Pd4.5 alloy. Also, the hysteresis becomes smaller nearing zero. Using thermal dynamic calculations, the elastic energy is nearly unchanged during the thermal cycles, which means there is little addition of the irreversible energy. The transmission electron microscopy observations show that the irreversible defects such as dislocations are rare in the reciprocating phase transition processes. Both of these explain the high thermal stability mechanism.

AB - After 5000 thermal cycles, the change of the transformation temperature is less than 1°C in a Ti50.5Ni33.5Cu11.5Pd4.5 alloy. Also, the hysteresis becomes smaller nearing zero. Using thermal dynamic calculations, the elastic energy is nearly unchanged during the thermal cycles, which means there is little addition of the irreversible energy. The transmission electron microscopy observations show that the irreversible defects such as dislocations are rare in the reciprocating phase transition processes. Both of these explain the high thermal stability mechanism.

KW - (SMAs)

KW - (TEM)

KW - Martensitic phase transformation

KW - Shape memory alloys

KW - Thermodynamics

KW - Ti-Ni-Cu-Pd alloy

KW - Transmission electron microscopy

UR - https://www.scopus.com/pages/publications/84928304550

U2 - 10.1016/j.scriptamat.2015.02.030

DO - 10.1016/j.scriptamat.2015.02.030

M3 - 文章

AN - SCOPUS:84928304550

SN - 1359-6462

VL - 103

SP - 30

EP - 33

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Thermal cycling stability mechanism of Ti_50.5Ni_33.5Cu_11.5Pd_4.5 shape memory alloy with near-zero hysteresis

Abstract

Keywords

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