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Recoverable Strains in Shape-Memory Polycrystals

Bhattacharya, K. and Kohn, R. V. (1995) Recoverable Strains in Shape-Memory Polycrystals. Journal de Physique IV (Proceedings), 05 (C8). pp. 261-266. ISSN 1155-4339.

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Many alloys display the shape-memory effect in single crystal form, however the degree to which they retain this effect in polycrystalline form varies widely. We propose a theoretical explanation for this difference, showing that the recoverable strain of a polycrystal depends on the texture of the polycrystal, the transformation strain of the underlying martensitic transformation and especially critically on the change of symmetry during the underlying transformation. Roughly, we find that the greater the change in symmetry during transformation, the greater the recoverable strain. Our results agree with experimental observations, and provide guidance for the improvement of the shape-memory effect in polycrystals.

Item Type:Article
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Bhattacharya, K.0000-0003-2908-5469
Additional Information:© 1995 EDP Sciences.
Issue or Number:C8
Record Number:CaltechAUTHORS:20160127-092842919
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Official Citation:K. Bhattacharya, R. Kohn. Recoverable Strains in Shape-Memory Polycrystals. Journal de Physique IV, 1995, 05 (C8), pp.C8-261-C8-266. <10.1051/jp4:1995836>. <jpa-00254085>
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:64002
Deposited By: Ruth Sustaita
Deposited On:27 Jan 2016 17:40
Last Modified:03 Oct 2019 09:33

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