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Title: Overcoming fatigue through compression for advanced elastocaloric cooling

Journal Article · · MRS Bulletin
DOI:https://doi.org/10.1557/mrs.2018.70· OSTI ID:1464482
 [1];  [2];  [3];  [4];  [5];  [5];  [4]
  1. Univ. of Maryland, College Park, MD (United States). Dept. of Materials Science and Engineering
  2. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  3. Xi'an Jiaotong Univ., Xi'an (China). Dept. of Refrigeration and Cryogenic Engineering
  4. Univ. of Maryland, College Park, MD (United States)
  5. Univ. of Maryland, College Park, MD (United States). Center for Environmental Energy Engineering

Elastocaloric materials exhibit extraordinary cooling potential, but the repetition of cyclic mechanical loadings during long-term operation of cooling systems requires the refrigerant material to have long fatigue life. Here, this paper reviews the fundamental cause of fatigue from aspects of initiation and propagation of fatigue cracks in shape-memory alloys (SMAs) that are used as elastocaloric materials, and highlights recent advances in using compression to overcome fatigue by curtailing the generation of surfaces associated with crack propagation. Compression is identified as a key means to extend fatigue lifetime in engineering design of elastocaloric cooling drive mechanisms. We summarize the state-of-the-art performance of different SMAs as elastocaloric materials and discuss the influence of low cyclic strains and high resistance to transformation. We present integration of compression-based material assemblies into a cooling system prototype and optimization of the system efficiency using work recovery and related measures.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); National Natural Science Foundation of China (NSFC); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC02-07CH11358; 51606140
OSTI ID:
1464482
Report Number(s):
IS-J-9730; applab; PII: S0883769418000702
Journal Information:
MRS Bulletin, Vol. 43, Issue 4; ISSN 0883-7694
Publisher:
Materials Research SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 35 works
Citation information provided by
Web of Science

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Cited By (7)

Caloric Effects in Ferroic Materials: New Concepts for Cooling journal August 2018
Ultra-high fatigue life of NiTi cylinders for compression-based elastocaloric cooling journal August 2019
Future prospects for elastocaloric devices journal January 2019
Fatigue-resistant high-performance elastocaloric materials made by additive manufacturing journal November 2019
Caloric effects in ferroic materials journal April 2018
Fatigue-resistant high-performance elastocaloric materials via additive manufacturing text January 2019
Ultra-low-field magneto-elastocaloric cooling in a multiferroic composite device journal October 2018

Figures / Tables (5)


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