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FerroelasticityFerroelasticity is a phenomenon in which a material may exhibit a spontaneous strain. In ferroics, ferroelasticity is the mechanical equivalent of ferroelectricity and ferromagnetism. When a stress is applied to a ferroelastic material, a phase change will occur in the material from one phase to an equally stable phase either of different crystal structure (e.g. cubic to tetragonal) or of different orientation (a 'twin' phase). This stress-induced phase change results in a spontaneous strain in the material. Additional recommended knowledgeThe shape memory effect and superelasticity are manifestations of ferroelasticity. Nitinol (nickel titanium), a common ferroelastic alloy, can display either superelasticity or the shape-memory effect at room temperature, depending on the nickel/titanium ratio. See also
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Ferroelasticity". A list of authors is available in Wikipedia. |