Fatigue Crack Growth Behavior of Nickel-base Superalloy Haynes 282 at 550-750° C Public Deposited

http://ir.library.oregonstate.edu/concern/articles/1831cm63x

To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by ASM International and published by Springer. It can be found at:  http://link.springer.com/article/10.1007%2Fs11665-015-1588-9.

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  • The fatigue crack growth rates for nickel-based superalloy Haynes 282 were measured at temperatures of 550, 650, and 750 °C using compact tension specimens with a load ratio of 0.1 and cyclic loading frequencies of 25 Hz and 0.25 Hz. Increasing the temperature from 550 to 750 °C caused the fatigue crack growth rates to increase from ~20 to 60% depending upon the applied stress intensity level. The effect of reducing the applied loading frequency increased the fatigue crack growth rates from ~20 to 70%, also depending upon the applied stress intensity range. The crack path was observed to be transgranular for the temperatures and frequencies used during fatigue crack growth rate testing. At 750 °C, there were some indications of limited intergranular cracking excursions at both loading frequencies; however, the extent of intergranular crack growth was limited and the cause is not understood at this time.
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  • Rozman, K. A., Kruzic, J. J., & Hawk, J. A. (2015). Fatigue Crack Growth Behavior of Nickel-base Superalloy Haynes 282 at 550-750° C. Journal of Materials Engineering and Performance, 24(8), 2841-2846. doi:10.1007/s11665-015-1588-9
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