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Long-Term Oxidation Resistance of Several Precipitation Strengthened Ni-Based Superalloys

[+] Author Affiliations
Joseph Meyer, Vinay Deodeshmukh

Haynes International, Kokomo, IN

Paper No. GT2017-64605, pp. V006T24A016; 8 pages
doi:10.1115/GT2017-64605
From:
  • ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition
  • Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy
  • Charlotte, North Carolina, USA, June 26–30, 2017
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5091-6
  • Copyright © 2017 by ASME

abstract

Precipitation strengthened alloys are a staple material in the gas-turbine industry due to their excellent creep and mechanical strength. HAYNES® 282® alloy was developed to have excellent creep resistance while maintaining good fabricability and thermal stability. However, its long-term oxidation resistance has not been fully established. The purpose of this paper is to present yearlong oxidation data of 282 alloy at 871°C (1600°F) and to rank it with well-known gamma prime strengthened alloys: 263 alloy, R-41 alloy, and Waspaloy alloy. The oxidation resistance of each alloy was ranked based on weight change behavior, metal recession, Cr depletion, and microstructure. It was found that at 871°C, 282 alloy had oxidation resistance similar to 263 alloy but better than Waspaloy alloy.

Copyright © 2017 by ASME

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