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

Erell Bonnot; Ricardo Romero; Lluis Manosa; Eduard Vives; Antoni Planes

doi:10.1103/PhysRevLett.100.125901

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

Materials Science 2009-11-13 v1

Authors: Erell Bonnot , Ricardo Romero , Lluis Manosa , Eduard Vives , Antoni Planes

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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.

Keywords

magnetocaloric effect alloy microstructure

Cite

@article{arxiv.0802.2009,
  title  = {Elastocaloric effect associated with the martensitic transition in shape-memory alloys},
  author = {Erell Bonnot and Ricardo Romero and Lluis Manosa and Eduard Vives and Antoni Planes},
  journal= {arXiv preprint arXiv:0802.2009},
  year   = {2009}
}

Comments

4 pages, 4 figures

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