| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7172373 | International Journal of Fatigue | 2014 | 9 Pages |
Abstract
A trinomial superposition model containing a temperature parameter and accounting for creep-fatigue interactive effect for predicting creep-fatigue crack growth rates is proposed in this paper. Items and parameters in the model are investigated via fatigue crack growth experiments with 0 s and 90 s dwell time at different elevated temperatures on a nickel-based powder metallurgy superalloy FGH97. The results indicate a good capability of the proposed model in correlating the crack growth rate with creep-fatigue interactive effect. The model is also validated by available test results of Alloy 718 at 550 °C and 650 °C with various dwell times.
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Authors
Hao Liu, Rui Bao, Jianyu Zhang, Binjun Fei,