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Surface segregation in an engineering alloy: Hastelloy C-276

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Abstract

We have examined the surface composition of a cold-worked nickel-base superalloy, HASTELLOY C-276, by Auger electron spectroscopy. The alloy was subjected to annealing cycles at temperatures between 100 and 900°C. A number of elements, including C, N, O, P, S, and Si, segregated to the sample surface. The segregation behavior appears to be quite complex. Yet it can be understood in terms of five fundamental effects: kinetic limitations, thermodynamic temperature effects, cold-work annealing, depletion of trace impurities, and solute interactions.

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Authors and Affiliations

  1. Exxon Research and Engineering Company Linden, 07036, NJ

    J. J. Burton & B. J. Berkowitz

  2. Battelle, Houston Operations, Houston, TX

    R. D. Kane

Authors
  1. J. J. Burton
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  2. B. J. Berkowitz
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  3. R. D. Kane
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Formerly with Exxon Production Research Company

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Burton, J.J., Berkowitz, B.J. & Kane, R.D. Surface segregation in an engineering alloy: Hastelloy C-276. Metall Trans A 10, 677–682 (1979). https://doi.org/10.1007/BF02658388

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  • DOI: https://doi.org/10.1007/BF02658388

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