Cyclic Behavior of Nickel-Based Superalloy 617 M at Elevated Temperature

Dupare, Prasanna; Mhaiske, Akshay; Ballal, Atul; Thawre, Manjusha M.; Nagesha, A.

doi:10.1007/s41403-021-00317-9

Trans Indian Natl. Acad. Eng.

2022

DOI: 10.1007/s41403-021-00317-9

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Cyclic Behavior of Nickel-Based Superalloy 617 M at Elevated Temperature

Prasanna Dupare

Akshay Mhaiske

Atul Ballal

et al.

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2024

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“…These observations were also corroborated by other researchers. 15,16 Numerous studies have tried to explore the association of low cycle fatigue loading [17][18][19][20][21][22][23][24] with the microstructural attributes of this alloy in past. However, only a few investigators have attempted to study the behavior under pure HCF loading.…”

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Microstructural damage assessment in alloy 617M near high cycle fatigue threshold at elevated temperature

Kale,

Thawre,

Peshwe

et al. 2024

Fatigue Fract Eng Mat Struct

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High cycle fatigue (HCF) behavior of Ni superalloy 617M is investigated at 973 K and R‐ratio −1 on a resonance‐based fatigue testing system at 85 Hz frequency. The alloy experiences an abrupt drop in fatigue life within a narrow domain of 2.5–5 MPa near its fatigue strength at 320 MPa. Electron microscopy and diffraction techniques were employed to thoroughly analyze the nominal fatigue damage. The characterization revealed the significance of precipitation of secondary phases M23C6, Ti (C, N), and γ′ phase in dictating the HCF strength of the alloy. Cyclic loading at high temperature causes γ‐matrix hardening and secondary phase precipitation synergistically strengthening the material beyond its yield strength. Conjunctively, dynamic strain aging was also seen to play a major role in the evolution of fatigue damage. The work highlights the collective contribution of γ′‐phase precipitation, carbides, and dynamic strain aging and their influence on the HCF behavior of alloy 617M.

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mentioning

confidence: 99%

Microstructural damage assessment in alloy 617M near high cycle fatigue threshold at elevated temperature

Kale,

Thawre,

Peshwe

et al. 2024

Fatigue Fract Eng Mat Struct

Self Cite

View full text Add to dashboard Cite

show abstract

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Cyclic Behavior of Nickel-Based Superalloy 617 M at Elevated Temperature

Cited by 1 publication

References 11 publications

Microstructural damage assessment in alloy 617M near high cycle fatigue threshold at elevated temperature

Microstructural damage assessment in alloy 617M near high cycle fatigue threshold at elevated temperature

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