Abstract
The oxidation of 24 commercially available superalloys was measured after exposure in still air at up to 1150°C for up to 10,000 hr. The total depth affected by oxidation, which includes subscale reactions, followed the expected exponential relationship with temperature and the expected parabolic relationship with exposure time at 1000°C; oxidation of “Haynes” 25 and TD nickel chromium was not parabolic at 1150°C. The alloys could be divided into four groups according to relative resistance to oxidation at 1000°C. These differences in resistance could be explained qualitatively by the nominal compositions of the alloys.
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The information contained in this article was developed during the course of work under Contract AT(07-2)-1 with the U.S. Atomic Energy Commission.
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Angerman, C.L. Long-term oxidation of superalloys. Oxid Met 5, 149–167 (1972). https://doi.org/10.1007/BF00610842
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DOI: https://doi.org/10.1007/BF00610842