Journal
FUNCTIONAL MATERIALS LETTERS
Volume 2, Issue 2, Pages 73-78Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S1793604709000594
Keywords
Elastocaloric effect; martensitic transition; shape-memory alloy; magnetocaloric effect
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Funding
- CICyT (Spain) [MAT2007-62100]
- DURSI (Generalitat de Catalunya) [2005SGR00969]
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This letter reports on stress-strain experiments on a Cu-Zn-Al single crystal performed using a purpose-built tensile device which enables the load applied to the specimen to be controlled while elongation is continuously monitored. From the measured isothermal tensile curves, the stress-induced entropy changes are obtained at different temperatures. These data quantify the elastocaloric effect associated with the martensitic transition in shape-memory alloys. The large temperature changes estimated for this effect, suggest the possibility of using shape-memory alloys as mechanical refrigerators.
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