| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 768871 | Engineering Failure Analysis | 2011 | 9 Pages |
Abstract
Creep–fatigue crack growth behaviour of a nickel-based powder metallurgy superalloy has been investigated. Experiments were conducted at 750 °C with various dwell times. Results show that dwell time induced creep damage is significant by transforming a transgranular dominating cracking mode into a completely intergranular one. The observed dependence of crack growth rate on the dwell time and ΔK is complex indicating that the interaction between creep and fatigue is significant. Therefore, a factor reflecting the degree of the interaction was proposed to help modelling the creep–fatigue crack growth rates. The results are encouraging.
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Authors
Hongqin Yang, Rui Bao, Jianyu Zhang, Lei Peng, Binjun Fei,