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Title: Overcoming fatigue through compression for advanced elastocaloric cooling

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.
Authors:
 [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
Publication Date:
Report Number(s):
IS-J-9730
Journal ID: ISSN 0883-7694; applab; PII: S0883769418000702
Grant/Contract Number:
AC02-07CH11358; 51606140
Type:
Accepted Manuscript
Journal Name:
MRS Bulletin
Additional Journal Information:
Journal Volume: 43; Journal Issue: 4; Journal ID: ISSN 0883-7694
Publisher:
Materials Research Society
Research Org:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); National Natural Science Foundation of China (NNSFC); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; alloy; fatigue; phase transformation
OSTI Identifier:
1464482

Hou, Huilong, Cui, Jun, Qian, Suxin, Catalini, David, Hwang, Yunho, Radermacher, Reinhard, and Takeuchi, Ichiro. Overcoming fatigue through compression for advanced elastocaloric cooling. United States: N. p., Web. doi:10.1557/mrs.2018.70.
Hou, Huilong, Cui, Jun, Qian, Suxin, Catalini, David, Hwang, Yunho, Radermacher, Reinhard, & Takeuchi, Ichiro. Overcoming fatigue through compression for advanced elastocaloric cooling. United States. doi:10.1557/mrs.2018.70.
Hou, Huilong, Cui, Jun, Qian, Suxin, Catalini, David, Hwang, Yunho, Radermacher, Reinhard, and Takeuchi, Ichiro. 2018. "Overcoming fatigue through compression for advanced elastocaloric cooling". United States. doi:10.1557/mrs.2018.70. https://www.osti.gov/servlets/purl/1464482.
@article{osti_1464482,
title = {Overcoming fatigue through compression for advanced elastocaloric cooling},
author = {Hou, Huilong and Cui, Jun and Qian, Suxin and Catalini, David and Hwang, Yunho and Radermacher, Reinhard and Takeuchi, Ichiro},
abstractNote = {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.},
doi = {10.1557/mrs.2018.70},
journal = {MRS Bulletin},
number = 4,
volume = 43,
place = {United States},
year = {2018},
month = {4}
}