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The oxidation of single-crystal nickel-based superalloys

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Abstract

A phase transformation occurs in nickel-based single-crystal superalloys as a result of the oxidation that creates the external NiO scale. This transformation, which is the precursor to internal oxidation, creates the β phase (NiAl) first followed by the δ phase (Ni2Al3) prior to the formation of the spinel Ni (Cr, Al)2O4 and Al2O3 in succession. The implications of this effect on the rate of oxidation are discussed in this article.

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Authors and Affiliations

  1. Department of Materials Engineering at the University of British Columbia in Vancouver, Canada

    A. Akhtar (adjunct professor) & S. Hegde (graduate student)

  2. Department of Materials at Imperial College in London, London, UK

    R. C. Reed (professor and chair of Materials Science and Engineering)

Authors
  1. A. Akhtar
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  2. S. Hegde
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  3. R. C. Reed
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Akhtar, A., Hegde, S. & Reed, R.C. The oxidation of single-crystal nickel-based superalloys. JOM 58, 37–42 (2006). https://doi.org/10.1007/s11837-006-0066-0

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  • DOI: https://doi.org/10.1007/s11837-006-0066-0

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