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Hydrogen effects in [001] oriented nickel-base superalloy single crystals

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Abstract

The entry and subsequent interaction of hydrogen on the mechanical properties of the single crystal nickel-base super alloy CMSX-2 has been studied. Significant amounts of hydrogen were introduced by high temperature hydrogen charging in molten salts which led to an increased lattice parameter and microhardness and to a degradation in tensile elongation to failure whose extent scales with the depth of the hydrogenated zone. In this region a fracture mode change from a {111} to a {100} type also occurred. The values of the binding energy of hydrogen to solidification voids and the effective hydrogen pressure in the voids were estimate.

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Authors and Affiliations

  1. Coming Glass Works, Corning, NY

    C. L. Baker

  2. Laboratoire de Metallurgie Structurale, University of Paris-Sud, Orsay, France

    J. Chene

  3. Provost, Illinois Institute of Technology, IL 60616, Chicago

    I. M. Bernstein

  4. Dean of Car-negie Institute of Technology, Carnegie Mellon University, 15213, Pittsburgh, PA

    J. C. Williams

Authors
  1. C. L. Baker
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  2. J. Chene
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  3. I. M. Bernstein
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  4. J. C. Williams
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Baker, C.L., Chene, J., Bernstein, I.M. et al. Hydrogen effects in [001] oriented nickel-base superalloy single crystals. Metall Trans A 19, 73–82 (1988). https://doi.org/10.1007/BF02669816

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  • DOI: https://doi.org/10.1007/BF02669816

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