Tensile fatigue behavior and crack growth in GdBa2Cu3O7-x/stainless-steel coated conductor grown via reactive co-evaporation

Samuel Rogers, Justin Schwartz

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

(RE)Ba2Cu3O7-x (REBCO) conductors have the potential to enable a wide range of superconducting applications over a range of temperatures and magnetic fields (Vincent et al 2013 IEEE Trans. Appl. Supercond. 23 5700805), yet AC applications and devices with a charge/discharge cycle may be limited by the conductor fatigue properties. Here the fatigue behavior of GdBa2Cu3O7-x (GdBCO) conductors grown by reactive co-evaporation on stainless-steel substrates is reported for axial tensile strains, ϵ, up to 0.5% and 100 000 cycles. Failure mechanisms are investigated via microstructural studies and compared with a commercially available IBAD/MOCVD REBCO conductor. Results show that GdBCO/stainless-steel conductors retain their transport critical current for 10 000 cycles at ϵ = 0.35% and ϵ = 0.45%, and for 1000 cycles at ϵ = 0.50%. The main cause of fatigue degradation in GdBCO conductors is crack propagation and delamination that initiates at the edge of the conductor due to manufacturing defects.

Original languageEnglish (US)
Article number045013
JournalSuperconductor Science and Technology
Volume30
Issue number4
DOIs
StatePublished - Mar 9 2017

Fingerprint

Stainless Steel
stainless steels
Crack propagation
Evaporation
Stainless steel
cracks
conductors
evaporation
Fatigue of materials
Ion beam assisted deposition
Tensile strain
Critical currents
Metallorganic chemical vapor deposition
cycles
Delamination
Temperature distribution
Magnetic fields
Degradation
Defects
Substrates

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

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title = "Tensile fatigue behavior and crack growth in GdBa2Cu3O7-x/stainless-steel coated conductor grown via reactive co-evaporation",
abstract = "(RE)Ba2Cu3O7-x (REBCO) conductors have the potential to enable a wide range of superconducting applications over a range of temperatures and magnetic fields (Vincent et al 2013 IEEE Trans. Appl. Supercond. 23 5700805), yet AC applications and devices with a charge/discharge cycle may be limited by the conductor fatigue properties. Here the fatigue behavior of GdBa2Cu3O7-x (GdBCO) conductors grown by reactive co-evaporation on stainless-steel substrates is reported for axial tensile strains, ϵ, up to 0.5{\%} and 100 000 cycles. Failure mechanisms are investigated via microstructural studies and compared with a commercially available IBAD/MOCVD REBCO conductor. Results show that GdBCO/stainless-steel conductors retain their transport critical current for 10 000 cycles at ϵ = 0.35{\%} and ϵ = 0.45{\%}, and for 1000 cycles at ϵ = 0.50{\%}. The main cause of fatigue degradation in GdBCO conductors is crack propagation and delamination that initiates at the edge of the conductor due to manufacturing defects.",
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N2 - (RE)Ba2Cu3O7-x (REBCO) conductors have the potential to enable a wide range of superconducting applications over a range of temperatures and magnetic fields (Vincent et al 2013 IEEE Trans. Appl. Supercond. 23 5700805), yet AC applications and devices with a charge/discharge cycle may be limited by the conductor fatigue properties. Here the fatigue behavior of GdBa2Cu3O7-x (GdBCO) conductors grown by reactive co-evaporation on stainless-steel substrates is reported for axial tensile strains, ϵ, up to 0.5% and 100 000 cycles. Failure mechanisms are investigated via microstructural studies and compared with a commercially available IBAD/MOCVD REBCO conductor. Results show that GdBCO/stainless-steel conductors retain their transport critical current for 10 000 cycles at ϵ = 0.35% and ϵ = 0.45%, and for 1000 cycles at ϵ = 0.50%. The main cause of fatigue degradation in GdBCO conductors is crack propagation and delamination that initiates at the edge of the conductor due to manufacturing defects.

AB - (RE)Ba2Cu3O7-x (REBCO) conductors have the potential to enable a wide range of superconducting applications over a range of temperatures and magnetic fields (Vincent et al 2013 IEEE Trans. Appl. Supercond. 23 5700805), yet AC applications and devices with a charge/discharge cycle may be limited by the conductor fatigue properties. Here the fatigue behavior of GdBa2Cu3O7-x (GdBCO) conductors grown by reactive co-evaporation on stainless-steel substrates is reported for axial tensile strains, ϵ, up to 0.5% and 100 000 cycles. Failure mechanisms are investigated via microstructural studies and compared with a commercially available IBAD/MOCVD REBCO conductor. Results show that GdBCO/stainless-steel conductors retain their transport critical current for 10 000 cycles at ϵ = 0.35% and ϵ = 0.45%, and for 1000 cycles at ϵ = 0.50%. The main cause of fatigue degradation in GdBCO conductors is crack propagation and delamination that initiates at the edge of the conductor due to manufacturing defects.

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