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The influence of surface energy on stress-free microstructures in shape memory alloys

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Abstract

Certain alloys such as In-Tl, Ni-Ti, Ag-Cd or Cu-Al-Ni display remarkable mechanical properties such as the shape memory effect or pseudo-elasticity. This behaviour is related to a solid-solid phase transformation which leads to a complicated microscopic arrangement of different phases. In recent studies such microstructures have been analyzed by the minimization of elastic energy. We discuss the influence of additional surface energy terms on the existence of stress-free microstructures both in the nonlinear and a geometrically linear setting.

Sommario

Certe leghe come quelle di In-Tl, Ni-Ti, Ag-Cd o Cu-Al-Ni mostrano proprietà meccaniche notevoli quali la memoria di forma o la pseudoelasticità. Questo comportamento è determinato da una trasformazione di fase solido-solido che conduce a complicati arrangiamenti a livelo microscopico. In studi recenti tali microstrutture sono state analizzate attraverso la minimizzazione dell'energia elastica. Noi discutiamo l'influenza di termini addizionali di energia superficiale sull'esistenza di microstrutture in uno stato naturale sia in un contesto lineare che non lineare.

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Authors and Affiliations

  1. Mathematisches Institut, Universität Freiburg, Albert str. 23b, 79104, Freiburg, Germany

    Georg Dolzmann & Stefan Müller

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  1. Georg Dolzmann
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  2. Stefan Müller
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Dolzmann, G., Müller, S. The influence of surface energy on stress-free microstructures in shape memory alloys. Meccanica 30, 527–539 (1995). https://doi.org/10.1007/BF01557083

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  • DOI: https://doi.org/10.1007/BF01557083

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