Creep–fatigue tests were carried out on Jethete M152 at 550°C under mode I, mode II, and mixed mode (K1/KII ≈ 1.6) conditions. The results were correlated and compared with corresponding fatigue and creep data. The results indicated that damage due to creep caused a larger increase in fatigue crack growth rate than a simple superposition model would predict. Also creep appeared to have a more dominant influence than fatigue on crack growth direction.
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References
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ChambersA. C.HydeT. H.WebsterJ. J.‘Mixed-mode fatigue crack growth at 550°C under plane stress conditions in Jethete M152’, Engng Fracture Mech., in press.
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HydeT. H.ChambersA. C.‘An experimental investigation of mixed-mode creep crack growth in Jethete M152 at 550°C’, to appear inMater. High Temp., in press.
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