Low temperature mechanical properties of Y123 bulk superconductor fabricated by the modified QMG process

A. Murakami, K. Katagiri, K. Kasaba, K. Noto, H. Teshima, M. Sawamura, N. Sakai, M. Murakami

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13 Citations (Scopus)

Abstract

The monotonic and the repeated bending tests on the Y123 single grain bulk superconductor sample were carried out. The average Young's modulus at liquid nitrogen temperature (LNT), 148 GPa, was higher than that at room temperature (RT), 132 GPa. The average bending strength at LNT, 90 MPa, was also higher than that at RT, 74 MPa. The Weibull coefficient for the bending strength at RT, 17.6, was significantly larger than that at LNT, 6.1. The specimen cut from the bottom region of the bulk superconductor showed slightly higher value of the Young's modulus and lower value of the bending strength. The fatigue endurance limit for the repeated pulsating loading up to 5×104 cycles at LNT, 70 MPa, was about 80% of the bending strength.

Original languageEnglish
Pages (from-to)673-677
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume412-414
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2004 Oct 1

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Keywords

  • Bending strength
  • Bulk superconductor
  • Cryogenic temperature
  • Modified QMG
  • Y123
  • Young's modulus

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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