Abstract
A three-term interaction crack growth model developed for creep-brittle materials is restudied. Derivation of cycle-time interaction intensity factor from the Gaussian equation is discussed. The model's prediction ability was verified by test data of a nickel base superalloy under 750 °C with 25 s dwell time. Data of two other superalloys namely Alloy 718 and Hastelloy® X from literature are analyzed to further examine applicability of the model. Satisfactory results are obtained. Parameter fitting procedure and limitation of the model are discussed at the end.
| Original language | English |
|---|---|
| Pages (from-to) | 112-120 |
| Number of pages | 9 |
| Journal | Engineering Fracture Mechanics |
| Volume | 124-125 |
| DOIs | |
| State | Published - Jul 2014 |
Keywords
- Crack growth
- Creep-fatigue
- Interaction effect
- Nickel-based superalloys
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