| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7172015 | International Journal of Fatigue | 2015 | 8 Pages |
Abstract
Confined crack tip plasticity model is employed to predict time independent fatigue crack growth rate (FCGR) behavior of HAYNES® 282® alloy at temperatures 1200F and 1400F. Crack growth tests were done in lab air, vacuum and steam environments at load ratios RÂ =Â Kmin/Kmax ranging from 0.05 to 0.5. Calibrated model predicts average cyclic crack growth rate behavior of the material reasonably well. Predictions do not capture the accelerated fatigue crack growth rates observed in the data at low load levels. Such effects are believed to be caused by environmentally driven factors, which are not expected to be predicted by plasticity based models.
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Authors
Shakhrukh Ismonov, Adrian Loghin, Timothy Hanlon, Chen Shen,