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New Technique to Map Hot Corrosion Damage: CMSX-4 Example

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Abstract

Despite their extraordinary properties, superalloys are subject to hot corrosion; a phenomenon potentially leading to catastrophic failure of turbine blades. However hot corrosion is understood to be highly temperature dependent, undergoing different reaction rates and even reaction mechanisms with changing alloy temperature. As such, a detailed understanding of the variation in rates of damage with temperature is required when producing superalloy components for use in sectors such as aerospace and energy. This article outlines a novel method for rapidly acquiring temperature-dependent hot corrosion data for superalloys in the temperature range 600–1000 °C. The technique is illustrated for the aerospace superalloy, CMSX-4, generating results that localise peak hot corrosion damage at 725 °C (Type II) and 900 °C (Type I).

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Acknowledgments

Humphrey Haight would like to acknowledge the assistance of A Potter, T Roberts and L Butler.

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Authors and Affiliations

  1. Cranfield University, Bedfordshire, MK43 0AL, UK

    H. Haight, A. Potter, J. Sumner & S. Gray

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  1. H. Haight
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  2. A. Potter
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  3. J. Sumner
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  4. S. Gray
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Correspondence to S. Gray.

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Haight, H., Potter, A., Sumner, J. et al. New Technique to Map Hot Corrosion Damage: CMSX-4 Example. Oxid Met 84, 607–619 (2015). https://doi.org/10.1007/s11085-015-9590-z

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  • DOI: https://doi.org/10.1007/s11085-015-9590-z

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