Time‐ and cycle‐dependent growth of surface cracks in alloy 718

Thermomechanical fatigue (TMF) crack growth of Alloy 718 when the cycle includes long high‐temperature tensile dwells is often accelerated because sustained‐load crack growth occurs during the dwells and a temperature affected zone (TAZ) develops ahead of a crack tip that reduces fatigue crack growt...

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Veröffentlicht in:	Fatigue & fracture of engineering materials & structures 2024-04, Vol.47 (4), p.1395-1416
Hauptverfasser:	Satin, Morris M., Johnson, W. Steven, Neu, Richard W.
Format:	Artikel
Sprache:	eng
Schlagworte:	Crack propagation Crack tips Cracks creep‐fatigue dynamic embrittlement Edge cracks Fatigue cracks Fatigue failure Fracture mechanics Grain size Growth models IN718 Load tests Metal fatigue Nickel base alloys Prediction models Superalloys Surface cracks tensile dwell thermomechanical fatigue
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