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Experience With in 939 as a Hot Corrosion Resistant Turbine Vane Material FREE

[+] Author Affiliations
Klaus Schneider, Roland Bauer, Marc Staubli, Hermann W. Grünling

Brown, Boveri & Cie AG., Mannheim, FRG

Paper No. 84-GT-297, pp. V005T11A011; 7 pages
doi:10.1115/84-GT-297
From:
  • ASME 1984 International Gas Turbine Conference and Exhibit
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries; Technology Resources
  • Amsterdam, The Netherlands, June 4–7, 1984
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7950-4
  • Copyright © 1984 by ASME

abstract

For stationary gas turbine vanes IN 939 was evaluated very thoroughly in Europe as a promising hot corrosion resistant nickel base alloy.

This paper shows examples of properties and behavior of IN 939 from literature and from actual application in stationary gas turbines.

After long-term operation in stationary gas turbines vanes are analysed to show the type of oxide scale formation, the hot corrosion attack and phase stability. The alloy IN 939 exhibited excellent hot corrosion resistance under severe environmental conditions comparable to that of commercial hot corrosion protective coatings.

Phases are described developed after casting and during heat treatment and sensitivity towards M-phase formation is briefly discussed. Creep and fatique data of IN 939 are compared with IN 738 LC as well as the hot corrosion behavior.

Copyright © 1984 by ASME
Topics: Corrosion , Turbines
This article is only available in the PDF format.

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