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Superconductivity and dislocation cell structure in niobium: Stress effects

  • Alloy Phases and Structure
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Abstract

To investigate the mechanism for the development of large anisotropic resistive critical fields in deformed niobium, the dependence of the parallel critical fieldH ∥ on stress σ was measured in both compression and tension, for severely deformed niobium composites. the magnitude of ∂H ∥/∂ σ increased with strain up to a value of 27 times that of annealed niobium. Also, both tension and compression increasedH ∥. Both of these discrepancies from the thermodynamic predictions can be ascribed to the presence of double-ended dislocation pileups in the cell walls.

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Authors and Affiliations

  1. Union Carbide Co., Tarrytown, N. Y.

    D. C. Hill

Authors
  1. D. C. Hill
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  2. R. M. Rose
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Additional information

D. C. HILL, formerly National Science Foundation Trainee, Department of Metallurgy and Materials Science Massachusetts Institute of Technology, Cambridge, Mass.

M.I.T.

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Hill, D.C., Rose, R.M. Superconductivity and dislocation cell structure in niobium: Stress effects. Metall Trans 2, 1433–1437 (1971). https://doi.org/10.1007/BF02913372

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  • DOI: https://doi.org/10.1007/BF02913372

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