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Comportamiento mecánico de materiales masivos supercondcutores de segunda generación en función de la temperatura

Authors: Konstantopoulou, K.; Pastor, J.Y.; Roa Rovira, Joan Josep; Segarra, M.;

Comportamiento mecánico de materiales masivos supercondcutores de segunda generación en función de la temperatura

Abstract

En este trabajo se han analizado dos materiales masivos superconductores de base YBaCuO, con el objetivo de estudiar la influencia del método de procesado (método Bridgman y método Top-Seeding Melt Growth) y de la temperatura de ensayo en su comportamiento mecánico. Ambos materiales se ensayaron a temperatura ambiente (300 K) y a baja temperatura (77 K), determinandose la resistencia mecánica y la tenacidad a fractura en flexión en tres puntos. Además, en uno de los materiales, que presentaba anisotropía microestructural, se realizaron ensayos en las dos direcciones microestructuralmente más relevantes. Los resultados obtenidos muestran que el comportamiento mecánico del material está controlado por los defectos y grietas introducidas durante el procesado y, por lo tanto, si se quiere mejorar las propiedades, debería reducirse la cantidad y el tamaño de estas imperfecciones.

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Spain
Keywords

Àrees temàtiques de la UPC::Enginyeria dels materials, Materiales, baja temperatura, criogenia, comportamiento mecánico, YBaCuO, Superconductors d'alta temperatura -- Propietats mecàniques, superconductors, :Enginyeria dels materials [Àrees temàtiques de la UPC], mechanical behaviour, fractura, cryogenic, Superconductors, superconductores

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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