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.

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