Elastocaloric effect in Cu - Zn
نویسنده
چکیده
This work aims to study the elastocaloric effect in a Cu-Al-Zn shape memory alloy sample. The elastocaloric effect refers to the reversible thermal response (isothermal entropy change, or adiabatic temperature change) of a body when subjected to a uniaxial stress. To measure the entropy change of the martensitic transformation, differential scanning calorimetry technique has been used. The calorimeter is capable to work under magnetic fields and the calibration of the calorimetric system is also presented. We obtain a maximum value for the stress-induced entropy change of 22,35 J/kg·K within the temperature range between 32oC and 41oC and an applied stress of 32,17 MPa.
منابع مشابه
Elastocaloric effect associated with the martensitic transition in shape-memory alloys.
The elastocaloric effect in the vicinity of the martensitic transition of a Cu-Zn-Al single crystal has been studied by inducing the transition by strain or stress measurements. While transition trajectories show significant differences, the entropy change associated with the whole transformation (DeltaS_(t)) is coincident in both kinds of experiments since entropy production is small compared ...
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