Deformation mechanisms of a nickel-based single-crystal superalloy during low-cycle fatigue at different temperatures. (1st April 2015)

• Record Type: Journal Article
• Authors: Wang, X.G.; Liu, J.L.; Jin, T.; Sun, X.F.; Zhou, Y.Z.; Hu, Z.Q.; Do, J.H.; Choi, B.G.; Kim, I.S.; Jo, C.Y.
• Is Part Of: Scripta materialia. Volume 99(2015)
• Page Start: 57
• Page End: 60
• Publication Date: 2015-04-01
• Subjects: Low-cycle fatigue -- Slip band -- Dislocation configuration -- Ni-based superalloy; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2014.11.026
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract : Deformation mechanisms of an Ni-based superalloy during low-cycle fatigue at various temperatures were studied. A new configuration of cross-slip dislocation was observed in the γ matrix during the deformation at 760 and 900 °C, which is an important component of the slip band at 900 °C. Slip bands with different morphologies were observed at room temperature and 900 °C, corresponding to the obvious work-hardening. It was observed that stacking faults spread throughout the γ/γ′ interface.