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Evaluation of Conductor Sheath Alloys for a Forced-Flow Nb3Sn Superconducting Magnet Coil for the Large Coil Program

  • R. E. Gold
  • W. A. Logsdon
  • G. E. Grotke
  • B. Lustman
Part of the Advances in Cryogenic Engineering Materials book series (ACRE, volume 28)

Abstract

The Westinghouse-Airco superconducting toroidal magnet design for the Large Coil Program (LCP) employs forced-flow, supercritical liquid helium to cool the niobium-tin superconducting windings. This requires that the conductor sheath, and in particular the longitudinal seam weld that closes the sheath over the bundled conductor during manufacture, be absolutely leak tight. Normal operating stresses in the sheath are approximately 240 MPa; however, during a fault condition the local stresses can approach 1035 MPa.

Keywords

Fracture Toughness Weld Metal Fusion Zone Delta Ferrite Weld Fusion Zone 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    “Superconducting Magnet Coils for the Large Coil Program,” Phase 2 Final Report to Union Carbide Corp., Oak Ridge, Tennessee by Westinghouse Electric Corporation, Pittsburgh, Pennsylvania on Contract 22X-31747C (March 31, 1980 ).Google Scholar
  2. 2.
    J. W. Morris, Jr., University of California, Berkeley, private communication (February 1980).Google Scholar
  3. 3.
    W. A. Logsdon, G. E. Grotke, R. E. Gold, and B. Lustman, Cryogenic tensile and fracture toughness properties of three candidate structural materials for the Large Coil Program superconducting magnet conductor sheath, in: “Advances in Cryogenic Engineering--Materials,” Vol. 28, Plenum Press, New York (1982), p. 771.Google Scholar
  4. 4.
    “Plane Strain Crack Toughness Testing of High Strength Metallic Materials,” W. F. Brown, Jr. and J. E. Srawley, eds., ASTM STP 410, American Society for Testing and Materials, Philadelphia (1966).Google Scholar
  5. 5.
    H. A. Ernst, Unified solution for J ranging continuously from pure bending to pure tension, unpublished research at Westinghouse R&D Center, Pittsburgh, Pennsylvania (1981).Google Scholar

Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • R. E. Gold
    • 1
  • W. A. Logsdon
    • 2
  • G. E. Grotke
    • 2
  • B. Lustman
    • 3
  1. 1.Westinghouse Fusion Power SystemsPittsburghUSA
  2. 2.Westinghouse Research and Development CenterPittsburghUSA
  3. 3.Westinghouse Steam Turbine Generator DivisionPittsburghUSA

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