A unique “fishtail-like” four-way shape memory effect of compositionally graded NiTi

Q. Meng; Zhigang Wu; Reza Bakhtiari; Bashir Shariat; Hong Yang; Yinong Liu; T.h. Nam

doi:10.1016/j.scriptamat.2016.09.007

A unique “fishtail-like” four-way shape memory effect of compositionally graded NiTi

Q. Meng, Zhigang Wu, Reza Bakhtiari, Bashir Shariat, Hong Yang, Yinong Liu, T.h. Nam

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Abstract

© 2016 Acta Materialia Inc.
This paper reports a complex four-way shape memory effect of a compositionally graded NiTi thin plate. The composition gradient is created by surface diffusion of Ni into the plate. After a 15% tensile deformation pre-treatment, the compositionally graded plate exhibits a complex four-way shape memory effect in bending mode, by which the metal exhibits a back-and-forth shape change upon a complete thermal cycle. This is analogous to a “fishtail-like” motion, resulting from the sequential transformation through the thickness of the plate as dictated by Ni content gradient. Such “four-way” shape memory effect has not been achieved in NiTi alloys before.

Original language	English
Pages (from-to)	84-87
Number of pages	4
Journal	Scripta Materialia
Volume	127
DOIs	https://doi.org/10.1016/j.scriptamat.2016.09.007
Publication status	Published - 15 Jan 2017

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10.1016/j.scriptamat.2016.09.007

Meng et al 2016 A unique fishtail-like four-way shape memory effect of compositionally graded NiTi
© 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Accepted author manuscript, 376 KBLicence: CC BY-NC-ND

Exceptional properties by design - NiTi vision
Samsam Shariat, B.
ARC Australian Research Council
1/01/15 → 30/09/20
Project: Research
Elastic Strain Engineered Transforming Metal Matrix-Nanowire Composite
Liu, Y., Yang, H., Han, X. & Ren, Y.
ARC Australian Research Council
1/01/14 → 15/05/17
Project: Research

Cite this

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title = "A unique “fishtail-like” four-way shape memory effect of compositionally graded NiTi",

abstract = "{\textcopyright} 2016 Acta Materialia Inc.This paper reports a complex four-way shape memory effect of a compositionally graded NiTi thin plate. The composition gradient is created by surface diffusion of Ni into the plate. After a 15% tensile deformation pre-treatment, the compositionally graded plate exhibits a complex four-way shape memory effect in bending mode, by which the metal exhibits a back-and-forth shape change upon a complete thermal cycle. This is analogous to a “fishtail-like” motion, resulting from the sequential transformation through the thickness of the plate as dictated by Ni content gradient. Such “four-way” shape memory effect has not been achieved in NiTi alloys before.",

author = "Q. Meng and Zhigang Wu and Reza Bakhtiari and Bashir Shariat and Hong Yang and Yinong Liu and T.h. Nam",

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AU - Meng, Q.

AU - Wu, Zhigang

AU - Bakhtiari, Reza

AU - Shariat, Bashir

AU - Yang, Hong

AU - Liu, Yinong

AU - Nam, T.h.

PY - 2017/1/15

Y1 - 2017/1/15

N2 - © 2016 Acta Materialia Inc.This paper reports a complex four-way shape memory effect of a compositionally graded NiTi thin plate. The composition gradient is created by surface diffusion of Ni into the plate. After a 15% tensile deformation pre-treatment, the compositionally graded plate exhibits a complex four-way shape memory effect in bending mode, by which the metal exhibits a back-and-forth shape change upon a complete thermal cycle. This is analogous to a “fishtail-like” motion, resulting from the sequential transformation through the thickness of the plate as dictated by Ni content gradient. Such “four-way” shape memory effect has not been achieved in NiTi alloys before.

AB - © 2016 Acta Materialia Inc.This paper reports a complex four-way shape memory effect of a compositionally graded NiTi thin plate. The composition gradient is created by surface diffusion of Ni into the plate. After a 15% tensile deformation pre-treatment, the compositionally graded plate exhibits a complex four-way shape memory effect in bending mode, by which the metal exhibits a back-and-forth shape change upon a complete thermal cycle. This is analogous to a “fishtail-like” motion, resulting from the sequential transformation through the thickness of the plate as dictated by Ni content gradient. Such “four-way” shape memory effect has not been achieved in NiTi alloys before.

U2 - 10.1016/j.scriptamat.2016.09.007

DO - 10.1016/j.scriptamat.2016.09.007

M3 - Article

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VL - 127

SP - 84

EP - 87

JO - Scripta Materialia

JF - Scripta Materialia

ER -

A unique “fishtail-like” four-way shape memory effect of compositionally graded NiTi

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Exceptional properties by design - NiTi vision

Elastic Strain Engineered Transforming Metal Matrix-Nanowire Composite

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