Elastocaloric effect associated with the martensitic transition in shape-memory alloys

Abstract

The elastocaloric effect in the vicinity of the martensitic transition of a Cu-Zn-Al 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 (\DeltaSt) is coincident in both kind of experiments since entropy production is small compared to \DeltaSt. The values agree with estimations based on the Clausius- Clapeyron equation. The possibility of using these materials for mechanical refrigeration is also discussed.

4 pages, 4 figures

References in corpus (1)

• Inverse magnetocaloric effect in ferromagnetic Ni-Mn-Sn alloys

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