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A Burner Rig Investigation of the Hot Corrosion Behavior of Several Wrought Superalloys and Intermetallics PUBLIC ACCESS

[+] Author Affiliations
G. Y. Lai, J. J. Barnes, J. E. Barnes

Haynes International, Inc., Kokomo, IN

Paper No. 91-GT-021, pp. V005T12A004; 10 pages
doi:10.1115/91-GT-021
From:
  • ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award; General
  • Orlando, Florida, USA, June 3–6, 1991
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7902-3
  • Copyright © 1991 by ASME

abstract

The hot corrosion behavior of wrought Ni- and Co-base superalloys and nickel aluminide intermetallics was studied in a burner rig at 900°C (1650°F) injected with 5 and 50 ppm sea salt. Nickel aluminides (IC-50 and IC-218) were found to be extremely susceptible to hot corrosion attack. Some state-of-the-art wrought superalloys, such as HAYNES alloys 230 and 188, on the other hand, were extremely resistant to hot corrosion. The behavior of different alloy systems, breakaway corrosion and corrosion morphology are discussed.

Copyright © 1991 by ASME
This article is only available in the PDF format.

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