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

Konstantopoulou, Konstantina and Roa, J. J. and Jiménez Piqué, E. and Segarra, M. and 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.

Description

Title: Fracture micromechanisms and mechanical behavior of YBCO bulk superconductors at 77 and 300 K
Author/s:
  • Konstantopoulou, Konstantina
  • Roa, J. J.
  • Jiménez Piqué, E.
  • Segarra, M.
  • Pastor Caño, Jose Ignacio
Item Type: Article
Título de Revista/Publicación: Ceramics International
Date: September 2014
ISSN: 0272-8842
Volume: 40
Subjects:
Freetext Keywords: YBaCuO; Mechanical behavior; Superconductors; Cryogenic; Microstructural defects
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainMAT2012-38541-C02-02UnspecifiedUnspecifiedUnspecified
Madrid Regional GovernmentS2009/MAT-1585UnspecifiedUnspecifiedUnspecified

More information

Item ID: 35460
DC Identifier: http://oa.upm.es/35460/
OAI Identifier: oai:oa.upm.es:35460
DOI: 10.1016/j.ceramint.2014.04.134
Official URL: http://www.sciencedirect.com/science/article/pii/S0272884214006865
Deposited by: Memoria Investigacion
Deposited on: 10 Jun 2015 16:01
Last Modified: 16 May 2019 07:34
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