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Title: Hysteresis in a system driven by either generalized force or displacement variables: martensitic phase transition in single-crystalline Cu-Zn-Al
Author: Bonnot, Erell
Romero, Ricardo
Illa i Tortós, Xavier
Mañosa, Lluís
Planes Vila, Antoni
Vives i Santa-Eulàlia, Eduard
Keywords: Propietats magnètiques
Transformacions martensítiques
Magnetic properties
Martensitic transformations
Issue Date: 2007
Publisher: The American Physical Society
Abstract: We report on experiments aimed at comparing the hysteretic response of a Cu-Zn-Al single crystal undergoing a martensitic transition under strain-driven and stress-driven conditions. Strain-driven experiments were performed using a conventional tensile machine while a special device was designed to perform stress-driven experiments. Significant differences in the hysteresis loops were found. The strain-driven curves show reentrant behavior yield point which is not observed in the stress-driven case. The dissipated energy in the stress-driven curves is larger than in the strain-driven ones. Results from recently proposed models qualitatively agree with experiments.
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It is part of: Physical Review B, 2007, vol. 76, núm. 6, p. 064105-1-064105-5
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ISSN: 0163-1829
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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