A re-visit to the Haigh diagram with the effect of creep damage on the high cycle fatigue behavior of alloy 617M

Ponnapureddy, Shiven; Sarkar, Aritra; Narasaiah, N.; Rao, Bonta Srinivasa

doi:10.1016/j.ijfatigue.2021.106258

Cited by 8 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Upon decreasing the alternating stress amplitude by just 2.5 MPa, specimen S5 sustained 10 7 cycles under the fatigue loading, whereas specimen S6 withstood the cyclic load till 10 8 cycles without failure, at alternating stress of 320 MPa which marks the fatigue strength of the material at 973 K. Thus, only S5 and S6 were termed to have fulfilled “runout” criterion. It is also important to know that the yield strength and ultimate tensile strength of the alloy were found to be 248 and 496 MPa, respectively, at 973 K as per the previous studies 21,29 . The results are represented in the form of a semilogarithmic S–N plot as given in Figure 2.…”

Section: Resultsmentioning

confidence: 73%

See 1 more Smart Citation

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

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.

show abstract

Section: Resultsmentioning

confidence: 73%

“…It is also important to know that the yield strength and ultimate tensile strength of the alloy were found to be 248 and 496 MPa, respectively, at 973 K as per the previous studies. 21,29 The results are represented in the form of a semilogarithmic S-N plot as given in Figure 2.…”

Section: Experimental S-n Plotmentioning

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

“…It was detected that the Goodman equation is applicable to VDSiCr spring steel [ 13 ] and Ti–15Mo–5Zr–3Al alloy [ 27 ] under axial fatigue, the Geber equation is suitable for the X10CrNiMoV12‐2‐2 steel [ 18 ] under axial fatigue and VDSiCr spring steel [ 28 ] under torsional fatigue, and the Dietman and elliptical equations give reasonable results for the influence of stress ratio on the axial fatigue strength of 7075‐T6 and 2014‐T6 aluminum alloys, [ 24 ] respectively. Besides, it has been found that the above four kinds of classic models all cannot effectively correct the effect of stress ratio on the axial fatigue strength of SUJ2 steel, [ 23 ] Alloy 617M, [ 29 ] SWOSC‐V spring steel, [ 30 ] and selective laser melted Ti–6Al–4V ELI. [ 31 ] Based on the above statements, it can be inferred that the above four kinds of classic models are only applicable to some materials.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Fatigue Behaviors of Maraging Steel at Different Stress Ratios

et al. 2023

View full text Add to dashboard Cite

Herein, the high‐cycle fatigue behaviors of 18Ni maraging steel with different tensile strength in the stress ratio range from 0.1 to 0.5 are investigated, and compared with those at the stress ratio of −1. It is found that the relationship between the fatigue strength at the stress ratios of −1 and 0.1 and tensile strength is nonmonotonic, while the fatigue strength at the stress ratio of 0.5 improves as the tensile strength heightens. The tensile strength corresponding to the optimal fatigue strength state would change with the variation of the stress ratio, which is related to the alteration of key factors affecting the fatigue damage. Moreover, it is found that the Walker equation: σaR = σ−1 ⋅ [(1 − R)/2]β gives reasonable results for the influence of stress ratio on the fatigue strength of 18Ni maraging steel.

show abstract

“…Inconel617 is a nickel-based solid solution strengthened alloy with excellent, comprehensive high-temperature strength and oxidation resistance and corrosion resistance. It is mainly used in industrial and aviation steam turbine hot-end parts [1][2][3]. In the face of a complex working environment and product upgrade requirements, its oxidation and corrosion resistance under high-temperature conditions cannot fully meet the higher use requirements of the new generation of hot-end components [4,5].…”

Section: Introductionmentioning

confidence: 99%

Study on the Solidification Behavior of Inconel617 Electron Beam Cladding NiCoCrAlY: Numerical and Experimental Simulation

et al. 2022

View full text Add to dashboard Cite

To better control the Inconel617 electron beam cladding solidification process, a three-dimensional temperature field model was built to simulate the temperature gradient, cooling rate, and solidification rate in the solidification process and take a deep dive into the solidification behavior, as well as the calculation of the solidification characteristic parameters at the edge of the molten pool and then predict the solidification tissue structure. The study shows that the largest temperature gradient occurred in the material thickness direction. The self-cooling effect of the material dominated the solidification of the alloy layer; the cooling rate depended on the high-temperature thermal conductivity of the material and the self-cooling effect of the matrix, and the maximum cooling rate in the bonding zone was 1380 °C/s. The steady-state solidification rate was equal to the moving speed of the heat source; the solidification characteristics of the solidification process at the edge of the molten pool increased with the distance from the surface: the cooling rate decreased from 1421.61 to 623 °C/s, the temperature gradient increased from 0.0723 × 106 to 0.417 × 106, and the solidification rate decreased from 0.01 to 0 m/s. The prediction was made that the small and thin equiaxed crystals are on the top, a thin and short dendritic transition structure in the middle, and relatively coarse dendrites at the bottom. Experiments confirmed that the solidification tissue structure is basically consistent with the simulation law.

show abstract

A re-visit to the Haigh diagram with the effect of creep damage on the high cycle fatigue behavior of alloy 617M

Cited by 8 publications

References 15 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

Investigation on the Fatigue Behaviors of Maraging Steel at Different Stress Ratios

Study on the Solidification Behavior of Inconel617 Electron Beam Cladding NiCoCrAlY: Numerical and Experimental Simulation

Contact Info

Product

Resources

About