Temperature dependent fatigue crack propagation in a single crystal Ni-base superalloy affected by primary and secondary orientations

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 724; pp. 559 - 565
• Main Authors: Suzuki, Shiyu, Sakaguchi, Motoki, Inoue, Hirotsugu
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 02.05.2018; Elsevier BV
• Subjects: Crack propagation; Crystal orientation; Crystal structure; Fatigue crack; Fatigue failure; Fatigue tests; Fracture behavior; Fracture mechanics; Materials fatigue; Microstructure; Nickel base alloys; Orientation effects; Propagation modes; Shearing; Single crystal Ni-base superalloy; Single crystals; Superalloys; Temperature; Temperature dependence; Temperature effects; Single crystal Ni-base superalloy; Temperature; Crystal orientation; Microstructure; Fracture behavior; Fatigue crack

The effects of temperature and crystal orientations on fatigue crack propagation in a single crystal Ni-base superalloy were experimentally investigated at room temperature, 450 °C and 700 °C. Four types of C(T) specimens with different combinations of crystal orientations in loading and crack propa...