Fatigue-resistant high-performance elastocaloric materials made by additive manufacturing

Huilong Hou; Emrah Simsek; Tao Ma; Nathan S. Johnson; Suxin Qian; Cheikh Cissé; Drew Stasak; Naila Al Hasan; Lin Zhou; Yunho Hwang; Reinhard Radermacher; Valery I. Levitas; Matthew J. Kramer; Mohsen Asle Zaeem; Aaron P. Stebner; Ryan T. Ott; Jun Cui; Ichiro Takeuchi

doi:10.1126/science.aax7616

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Fatigue-resistant high-performance elastocaloric materials made by additive manufacturing

Huilong Hou¹,*,
Emrah Simsek²,
Tao Ma²,
Nathan S. Johnson³,
Suxin Qian⁴,
Cheikh Cissé³,
Drew Stasak¹,
Naila Al Hasan¹,
Lin Zhou²,
Yunho Hwang⁵,
Reinhard Radermacher⁵,
Valery I. Levitas²,⁶,⁷,
Matthew J. Kramer²,⁸,
Mohsen Asle Zaeem³,
Aaron P. Stebner ³,
Ryan T. Ott ²,
Jun Cui ²,⁸,
Ichiro Takeuchi ¹,⁹,†

¹Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA.
²Division of Materials Science and Engineering, Ames Laboratory, Ames, IA 50011, USA.
³Department of Mechanical Engineering, Colorado School of Mines, Golden, CO 80401, USA.
⁴Department of Refrigeration and Cryogenic Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, People’s Republic of China.
⁵Center for Environmental Energy Engineering, Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA.
⁶Department of Aerospace Engineering, Iowa State University, Ames, IA 50011, USA.
⁷Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA.
⁸Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA.
⁹Maryland Quantum Materials Center, University of Maryland, College Park, MD 20742, USA.

↵†Corresponding author. Email: takeuchi{at}umd.edu

↵* Present address: School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, People’s Republic of China.

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Science 29 Nov 2019:
Vol. 366, Issue 6469, pp. 1116-1121
DOI: 10.1126/science.aax7616

Huilong Hou

Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA.

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Emrah Simsek

Division of Materials Science and Engineering, Ames Laboratory, Ames, IA 50011, USA.

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Tao Ma

Division of Materials Science and Engineering, Ames Laboratory, Ames, IA 50011, USA.

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Nathan S. Johnson

Department of Mechanical Engineering, Colorado School of Mines, Golden, CO 80401, USA.

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Suxin Qian

Department of Refrigeration and Cryogenic Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, People’s Republic of China.

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Cheikh Cissé

Department of Mechanical Engineering, Colorado School of Mines, Golden, CO 80401, USA.

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Drew Stasak

Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA.

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Naila Al Hasan

Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA.

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Lin Zhou

Division of Materials Science and Engineering, Ames Laboratory, Ames, IA 50011, USA.

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Yunho Hwang

Center for Environmental Energy Engineering, Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA.

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Reinhard Radermacher

Center for Environmental Energy Engineering, Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA.

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Valery I. Levitas

Division of Materials Science and Engineering, Ames Laboratory, Ames, IA 50011, USA.Department of Aerospace Engineering, Iowa State University, Ames, IA 50011, USA.Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA.

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Matthew J. Kramer

Division of Materials Science and Engineering, Ames Laboratory, Ames, IA 50011, USA.Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA.

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Mohsen Asle Zaeem

Department of Mechanical Engineering, Colorado School of Mines, Golden, CO 80401, USA.

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Aaron P. Stebner

Department of Mechanical Engineering, Colorado School of Mines, Golden, CO 80401, USA.

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Ryan T. Ott

Division of Materials Science and Engineering, Ames Laboratory, Ames, IA 50011, USA.

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Jun Cui

Division of Materials Science and Engineering, Ames Laboratory, Ames, IA 50011, USA.Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA.

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Ichiro Takeuchi

Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742, USA.Maryland Quantum Materials Center, University of Maryland, College Park, MD 20742, USA.

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For correspondence: takeuchi@umd.edu

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A million times cooler

Elastocaloric materials can be used for solid-state cooling applications because they can pump heat out of a system using a reversible phase transformation. However, many such materials fail after a small number of cycles. Hou et al. found that laser melting of elastocaloric metals can create fatigue-resistant microstructures. A nickel-titanium–based alloy could be cycled a million times and still produce a cooling of about 4 kelvin. This processing method could improve elastocaloric performance and move us closer to using these materials more widely for solid-state cooling applications.

Science, this issue p. 1116

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Fatigue-resistant high-performance elastocaloric materials made by additive manufacturing

A million times cooler

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