Small stress-hysteresis in a nanocrystalline TiNiCuFe alloy for elastocaloric applications over wide temperature window

Hui Zhang; Jinyi Liu; Zhiyuan Ma; Yang Ren; Daqiang Jiang; Lishan Cui; Kaiyuan Yu

doi:10.1016/j.jallcom.2022.167195

Small stress-hysteresis in a nanocrystalline TiNiCuFe alloy for elastocaloric applications over wide temperature window

Hui Zhang, Jinyi Liu, Zhiyuan Ma, Yang Ren, Daqiang Jiang, Lishan Cui^*, Kaiyuan Yu^*

^*Corresponding author for this work

Department of Physics

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

15 Citations (Scopus)

Abstract

Shape memory alloys (SMAs) with small stress-hysteresis and wide superelasticity temperature window are highly desired for elastocaloric applications. In this study, a nanocrystalline Ti₅₀Ni₄₂Cu₆Fe₂ SMA is fabricated by casting, forging, wire-drawing and annealing. The alloy exhibits superelasticity with a narrow average stress-hysteresis of ∼180 MPa over a temperature window from 213 K to 323 K. The temperature change of the elastocaloric effect is calculated to be ∼28 K. In situ synchrotron X-ray diffraction measurements suggest that the small hysteresis is probably attributed to the enhanced lattice compatibility as quantified by the cofactor condition parameters (λ₂, X_I and X_II).

Original language	English
Article number	167195
Journal	Journal of Alloys and Compounds
Volume	928
Online published	15 Sept 2022
DOIs	https://doi.org/10.1016/j.jallcom.2022.167195
Publication status	Published - 20 Dec 2022

Research Keywords

Elastocaloric
Lattice compatibility
Shape memory alloys
Stress-hysteresis

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@article{1bbda0590565473a8ff7e3498a156105,

title = "Small stress-hysteresis in a nanocrystalline TiNiCuFe alloy for elastocaloric applications over wide temperature window",

abstract = "Shape memory alloys (SMAs) with small stress-hysteresis and wide superelasticity temperature window are highly desired for elastocaloric applications. In this study, a nanocrystalline Ti50Ni42Cu6Fe2 SMA is fabricated by casting, forging, wire-drawing and annealing. The alloy exhibits superelasticity with a narrow average stress-hysteresis of ∼180 MPa over a temperature window from 213 K to 323 K. The temperature change of the elastocaloric effect is calculated to be ∼28 K. In situ synchrotron X-ray diffraction measurements suggest that the small hysteresis is probably attributed to the enhanced lattice compatibility as quantified by the cofactor condition parameters (λ2, XI and XII).",

keywords = "Elastocaloric, Lattice compatibility, Shape memory alloys, Stress-hysteresis",

author = "Hui Zhang and Jinyi Liu and Zhiyuan Ma and Yang Ren and Daqiang Jiang and Lishan Cui and Kaiyuan Yu",

year = "2022",

month = dec,

day = "20",

doi = "10.1016/j.jallcom.2022.167195",

language = "English",

volume = "928",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Small stress-hysteresis in a nanocrystalline TiNiCuFe alloy for elastocaloric applications over wide temperature window

AU - Zhang, Hui

AU - Liu, Jinyi

AU - Ma, Zhiyuan

AU - Ren, Yang

AU - Jiang, Daqiang

AU - Cui, Lishan

AU - Yu, Kaiyuan

PY - 2022/12/20

Y1 - 2022/12/20

N2 - Shape memory alloys (SMAs) with small stress-hysteresis and wide superelasticity temperature window are highly desired for elastocaloric applications. In this study, a nanocrystalline Ti50Ni42Cu6Fe2 SMA is fabricated by casting, forging, wire-drawing and annealing. The alloy exhibits superelasticity with a narrow average stress-hysteresis of ∼180 MPa over a temperature window from 213 K to 323 K. The temperature change of the elastocaloric effect is calculated to be ∼28 K. In situ synchrotron X-ray diffraction measurements suggest that the small hysteresis is probably attributed to the enhanced lattice compatibility as quantified by the cofactor condition parameters (λ2, XI and XII).

AB - Shape memory alloys (SMAs) with small stress-hysteresis and wide superelasticity temperature window are highly desired for elastocaloric applications. In this study, a nanocrystalline Ti50Ni42Cu6Fe2 SMA is fabricated by casting, forging, wire-drawing and annealing. The alloy exhibits superelasticity with a narrow average stress-hysteresis of ∼180 MPa over a temperature window from 213 K to 323 K. The temperature change of the elastocaloric effect is calculated to be ∼28 K. In situ synchrotron X-ray diffraction measurements suggest that the small hysteresis is probably attributed to the enhanced lattice compatibility as quantified by the cofactor condition parameters (λ2, XI and XII).

KW - Elastocaloric

KW - Lattice compatibility

KW - Shape memory alloys

KW - Stress-hysteresis

UR - http://www.scopus.com/inward/record.url?scp=85138140768&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85138140768&origin=recordpage

U2 - 10.1016/j.jallcom.2022.167195

DO - 10.1016/j.jallcom.2022.167195

M3 - RGC 21 - Publication in refereed journal

SN - 0925-8388

VL - 928

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 167195

ER -

Small stress-hysteresis in a nanocrystalline TiNiCuFe alloy for elastocaloric applications over wide temperature window

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