Giant elastocaloric effect covering wide temperature range in columnar-grained Cu71.5Al17.5Mn11 shape memory alloy

Sheng Xu; Hai You Huang; Jianxin Xie; Shouhei Takekawa; Xiao Xu; Toshihiro Omori; Ryosuke Kainuma

doi:10.1063/1.4964621

Giant elastocaloric effect covering wide temperature range in columnar-grained Cu_71.5Al_17.5Mn₁₁ shape memory alloy

Sheng Xu, Hai You Huang, Jianxin Xie, Shouhei Takekawa, Xiao Xu, Toshihiro Omori, Ryosuke Kainuma

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

68 Citations (Scopus)

Abstract

The elastocaloric effect in a columnar-grained Cu_71.5Al_17.5Mn₁₁ shape memory alloy fabricated by directional solidification was investigated. A large entropy change of 25.0 J/kg K generated by the reversible martensitic transformation was demonstrated. The adiabatic temperature change of 12-13 K was directly measured, covering a wide temperature range of more than 100 K. The low applied stress with a specific elastocaloric ability of 100.8 K/GPa was identified and the potentially attainable operational temperature window as wide as more than 215 K was also discussed. The outstanding elastocaloric refrigeration capability, together with the low applying stress and uniform phase transformation, makes the columnar-grained Cu-Al-Mn shape memory alloy a promising material for solid-state refrigeration.

Original language	English
Article number	106106
Journal	APL Materials
Volume	4
Issue number	10
DOIs	https://doi.org/10.1063/1.4964621
Publication status	Published - 2016 Oct 1
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Engineering(all)

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title = "Giant elastocaloric effect covering wide temperature range in columnar-grained Cu71.5Al17.5Mn11 shape memory alloy",

abstract = "The elastocaloric effect in a columnar-grained Cu71.5Al17.5Mn11 shape memory alloy fabricated by directional solidification was investigated. A large entropy change of 25.0 J/kg K generated by the reversible martensitic transformation was demonstrated. The adiabatic temperature change of 12-13 K was directly measured, covering a wide temperature range of more than 100 K. The low applied stress with a specific elastocaloric ability of 100.8 K/GPa was identified and the potentially attainable operational temperature window as wide as more than 215 K was also discussed. The outstanding elastocaloric refrigeration capability, together with the low applying stress and uniform phase transformation, makes the columnar-grained Cu-Al-Mn shape memory alloy a promising material for solid-state refrigeration.",

author = "Sheng Xu and Huang, {Hai You} and Jianxin Xie and Shouhei Takekawa and Xiao Xu and Toshihiro Omori and Ryosuke Kainuma",

note = "Funding Information: This work was supported by the National Natural Science Foundation of China (Grant No. 51574027) and the National Key Research and Development Program of China (Grant No. 2016YFB0700505). S.X. wishes to thank the Direct Enrollment Education Programs, Center for International Exchange, Tohoku University, Japan for providing a scholarship. Publisher Copyright: {\textcopyright} 2016 Author(s).",

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doi = "10.1063/1.4964621",

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AU - Xu, Sheng

AU - Huang, Hai You

AU - Xie, Jianxin

AU - Takekawa, Shouhei

AU - Xu, Xiao

AU - Omori, Toshihiro

AU - Kainuma, Ryosuke

N1 - Funding Information: This work was supported by the National Natural Science Foundation of China (Grant No. 51574027) and the National Key Research and Development Program of China (Grant No. 2016YFB0700505). S.X. wishes to thank the Direct Enrollment Education Programs, Center for International Exchange, Tohoku University, Japan for providing a scholarship. Publisher Copyright: © 2016 Author(s).

PY - 2016/10/1

Y1 - 2016/10/1

N2 - The elastocaloric effect in a columnar-grained Cu71.5Al17.5Mn11 shape memory alloy fabricated by directional solidification was investigated. A large entropy change of 25.0 J/kg K generated by the reversible martensitic transformation was demonstrated. The adiabatic temperature change of 12-13 K was directly measured, covering a wide temperature range of more than 100 K. The low applied stress with a specific elastocaloric ability of 100.8 K/GPa was identified and the potentially attainable operational temperature window as wide as more than 215 K was also discussed. The outstanding elastocaloric refrigeration capability, together with the low applying stress and uniform phase transformation, makes the columnar-grained Cu-Al-Mn shape memory alloy a promising material for solid-state refrigeration.

AB - The elastocaloric effect in a columnar-grained Cu71.5Al17.5Mn11 shape memory alloy fabricated by directional solidification was investigated. A large entropy change of 25.0 J/kg K generated by the reversible martensitic transformation was demonstrated. The adiabatic temperature change of 12-13 K was directly measured, covering a wide temperature range of more than 100 K. The low applied stress with a specific elastocaloric ability of 100.8 K/GPa was identified and the potentially attainable operational temperature window as wide as more than 215 K was also discussed. The outstanding elastocaloric refrigeration capability, together with the low applying stress and uniform phase transformation, makes the columnar-grained Cu-Al-Mn shape memory alloy a promising material for solid-state refrigeration.

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Giant elastocaloric effect covering wide temperature range in columnar-grained Cu_71.5Al_17.5Mn₁₁ shape memory alloy

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