中国物理B ›› 2026, Vol. 35 ›› Issue (6): 66201-066201.doi: 10.1088/1674-1056/ae48b8

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Recent advances and innovations in elastocaloric materials for solid-state refrigeration

Yadong Wang(王亚东)1, Li Wang(王丽)1, Zhen Chen(陈珍)2, Haoran Lou(娄浩然)1, Bin Gong(龚斌)1, Lian Huang(黄炼)3, Yandong Wang(王沿东)1, and Daoyong Cong(从道永)1,†   

  1. 1 State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;
    2 School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China;
    3 Department of Mechanical Engineering, Hunan Institute of Engineering, Xiangtan 411101, China
  • 收稿日期:2025-11-13 修回日期:2026-02-08 接受日期:2026-02-23 发布日期:2026-06-15
  • 通讯作者: Daoyong Cong E-mail:dycong@ustb.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 52325101, 52171172, and 52031005), the Fundamental Research Funds for the Central Universities (Grant No. FRF-TP-24-01C), the State Key Laboratory for Advanced Metals and Materials (Grant No. 2025-Z32), the Science and Technology Innovation Program of Hunan Province (Grant No. 2023RC4009), and Hunan Provincial Natural Science Foundation of China (Grant No. 2023JJ30190).

Recent advances and innovations in elastocaloric materials for solid-state refrigeration

Yadong Wang(王亚东)1, Li Wang(王丽)1, Zhen Chen(陈珍)2, Haoran Lou(娄浩然)1, Bin Gong(龚斌)1, Lian Huang(黄炼)3, Yandong Wang(王沿东)1, and Daoyong Cong(从道永)1,†   

  1. 1 State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;
    2 School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China;
    3 Department of Mechanical Engineering, Hunan Institute of Engineering, Xiangtan 411101, China
  • Received:2025-11-13 Revised:2026-02-08 Accepted:2026-02-23 Published:2026-06-15
  • Contact: Daoyong Cong E-mail:dycong@ustb.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 52325101, 52171172, and 52031005), the Fundamental Research Funds for the Central Universities (Grant No. FRF-TP-24-01C), the State Key Laboratory for Advanced Metals and Materials (Grant No. 2025-Z32), the Science and Technology Innovation Program of Hunan Province (Grant No. 2023RC4009), and Hunan Provincial Natural Science Foundation of China (Grant No. 2023JJ30190).

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摘要： Elastocaloric refrigeration technology is a highly efficient and environmentally friendly solid-state alternative to conventional vapor-compression refrigeration systems, leveraging the elastocaloric effects generated during the stress-induced martensitic transformations in shape memory alloys (SMAs). The cooling performance of this emerging technology primarily depends on the comprehensive properties of SMAs, which serve as the refrigerants. To date, various SMAs, such as Ni-Mn-based, Ni-Ti-based, Co-based, Ni-Fe-Ga-based, and Cu-based alloys, have demonstrated significant elastocaloric effects. However, the development of elastocaloric refrigeration applications is often severely hindered by other crucial properties of these SMAs, such as transformation temperature, transformation stress, stress hysteresis, coefficient of performance (COP), fatigue resistance, and cost. In this article, we provide a concise overview of recent research progress in elastocaloric performance across various SMAs, with a focus on the optimization strategies and the underlying microstructural mechanisms. Meanwhile, this review aims to provide actionable guidance and a comprehensive roadmap for the development of high-performance SMAs, facilitating the transition from laboratory-scale breakthroughs to practical elastocaloric refrigeration applications in the near future.

关键词: solid-state refrigeration, elastocaloric effect, shape memory alloys, martensitic transformation

Abstract: Elastocaloric refrigeration technology is a highly efficient and environmentally friendly solid-state alternative to conventional vapor-compression refrigeration systems, leveraging the elastocaloric effects generated during the stress-induced martensitic transformations in shape memory alloys (SMAs). The cooling performance of this emerging technology primarily depends on the comprehensive properties of SMAs, which serve as the refrigerants. To date, various SMAs, such as Ni-Mn-based, Ni-Ti-based, Co-based, Ni-Fe-Ga-based, and Cu-based alloys, have demonstrated significant elastocaloric effects. However, the development of elastocaloric refrigeration applications is often severely hindered by other crucial properties of these SMAs, such as transformation temperature, transformation stress, stress hysteresis, coefficient of performance (COP), fatigue resistance, and cost. In this article, we provide a concise overview of recent research progress in elastocaloric performance across various SMAs, with a focus on the optimization strategies and the underlying microstructural mechanisms. Meanwhile, this review aims to provide actionable guidance and a comprehensive roadmap for the development of high-performance SMAs, facilitating the transition from laboratory-scale breakthroughs to practical elastocaloric refrigeration applications in the near future.

Key words: solid-state refrigeration, elastocaloric effect, shape memory alloys, martensitic transformation

中图分类号:  (Shape-memory effect; yield stress; superelasticity)

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61.66.Dk (Alloys ) 61.82.Bg (Metals and alloys)