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

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

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.

Original languageEnglish
Article number106106
JournalAPL Materials
Volume4
Issue number10
DOIs
Publication statusPublished - 2016 Oct 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Fingerprint Dive into the research topics of 'Giant elastocaloric effect covering wide temperature range in columnar-grained Cu<sub>71.5</sub>Al<sub>17.5</sub>Mn<sub>11</sub> shape memory alloy'. Together they form a unique fingerprint.

Cite this