High temperature fatigue and creep-fatigue behaviors in a Ni-based superalloy: Damage mechanisms and life assessment

• Published in: International journal of fatigue Vol. 118; pp. 8 - 21
• Main Authors: Wang, Run-Zi, Zhu, Shun-Peng, Wang, Ji, Zhang, Xian-Cheng, Tu, Shan-Tung, Zhang, Cheng-Cheng
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.01.2019; Elsevier BV
• Subjects: Coincident site lattice boundary; Cold flow; Compressive properties; Crack propagation; Cracking (fracturing); Creep-fatigue; Cyclic testing; Damage assessment; Damage mechanism; Electron backscatter diffraction; Energy dissipation; Failure mechanisms; Failure modes; Fatigue cracks; Fatigue failure; Fatigue life; Fracture mechanics; Fracture toughness; High temperature; Hold time effect; Life assessment; Low cycle fatigue; Materials fatigue; Metal fatigue; Metals creep; Nickel alloys; Nickel base alloys; Optical microscopy; Oxidation; Scanning electron microscopy; Strain analysis; Superalloys; Waveforms; Coincident site lattice boundary; Life assessment; Hold time effect; Damage mechanism; Creep-fatigue

•Low cycle fatigue and creep-fatigue behaviors are systematically explored.•Cracking modes and damage mechanisms under different loading waveforms are investigated.•Σ3 CSLBs show great resistance of intergranular damage.•The present model addresses fatigue, creep and oxidation on life prediction. Th...