Creep‐fatigue behaviour of single‐crystal Ni‐base superalloy CMSX‐8. Issue 9 (23rd July 2019)

• Record Type: Journal Article
• Authors: Estrada Rodas, Ernesto A.; Gorgannejad, Sanam; Neu, Richard W.
• Other Names: Hong Youshi guestEditor.; Susmel Luca guestEditor.; Berto Filippo guestEditor.; Neu Richard W. guestEditor.; Endo Masahiro guestEditor.
• Is Part Of: Fatigue & fracture of engineering materials & structures. Volume 42:Issue 9(2019)
• Page Start: 2155
• Page End: 2171
• Publication Date: 2019-07-23
• Subjects: creep‐fatigue interaction -- life analysis -- mean stress effect -- Ni‐base superalloy -- single crystal; Materials -- Fatigue -- Periodicals; Fracture mechanics -- Periodicals; 620.1123
• DOI: 10.1111/ffe.13098
• Languages: English
• ISSNs: 8756-758X

Abstract

Abstract: The creep‐fatigue behaviour of a lower cost, reduced rhenium Ni‐base superalloy, CMSX‐8, a variant of CMSX‐4, cast in a single crystal was experimentally evaluated over a broad range of conditions, from room temperature to 1100°C, and for two loading orientations: <001> and <111>. The fatigue lives depend on the orientation, cycle type, and temperature. The relative importance of these parameters on influencing the life is identified and discussed. From this understanding, a simple life model is constructed to capture the influence of these broad test conditions. The results are compared with those of the higher Re superalloy, CMSX‐4.