Fracture micromechanisms and mechanical behavior of YBCO bulk superconductors at 77 and 300 K

Konstantopoulou, Konstantina; Roa, J. J.; Jiménez Piqué, E.; Segarra, M. y Pastor Caño, Jose Ignacio (2014). Fracture micromechanisms and mechanical behavior of YBCO bulk superconductors at 77 and 300 K. "Ceramics International", v. 40 (n. 8); pp. 12797-12806. ISSN 0272-8842. https://doi.org/10.1016/j.ceramint.2014.04.134.

Descripción

Título: Fracture micromechanisms and mechanical behavior of YBCO bulk superconductors at 77 and 300 K
Autor/es:
  • Konstantopoulou, Konstantina
  • Roa, J. J.
  • Jiménez Piqué, E.
  • Segarra, M.
  • Pastor Caño, Jose Ignacio
Tipo de Documento: Artículo
Título de Revista/Publicación: Ceramics International
Fecha: Septiembre 2014
Volumen: 40
Materias:
Palabras Clave Informales: YBaCuO; Mechanical behavior; Superconductors; Cryogenic; Microstructural defects
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

In this study two YBa2Cu3O7−δ bulk superconductors were evaluated, with the aim of analyzing the influence of the processing method (TSMG and Bridgman) and the test temperature on their mechanical behavior. The relationship between their mechanical properties and fracture micromechanisms has also been studied. Both materials were tested at room and at service temperature. TPB tests were carried out to determine their mechanical behavior, strength and toughness. Moreover, one of the two materials, characterized by transversal microstructural anisotropy, was tested in two directions. Hardness of both materials at nano and micro scale was studied. The results show that the mechanical behavior of the materials is controlled by the defects and cracks that have been introduced during the processing of the materials. A good degree of agreement was found between the experimental crack defects detected by means of SEM and those gathered from the fracture mechanical analysis of the experimental data

Más información

ID de Registro: 35460
Identificador DC: http://oa.upm.es/35460/
Identificador OAI: oai:oa.upm.es:35460
Identificador DOI: 10.1016/j.ceramint.2014.04.134
URL Oficial: http://www.sciencedirect.com/science/article/pii/S0272884214006865
Depositado por: Memoria Investigacion
Depositado el: 10 Jun 2015 16:01
Ultima Modificación: 10 Jun 2015 16:01
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