An approach to life prediction for a nickel-base superalloy under isothermal and thermo-mechanical loading conditions

Vöse, F.; Becker, M.; Fischersworring‐Bunk, Andreas; Hackenberg, Hans-Peter

doi:10.1016/j.ijfatigue.2011.10.018

Cited by 35 publications

(7 citation statements)

References 8 publications

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“…According to that study, the crack growth in IP TMF loading is intergranular and transgranular for the OP TMF loading at high strain amplitudes. The same life behavior for the forged nickel base superalloy IN718 was also described by Vöse et al [78].…”

Section: Fatigue Livessupporting

confidence: 75%

Isothermal and thermo-mechanical fatigue behavior of the nickel base superalloy Waspaloy™ under uniaxial and biaxial-planar loading

Kulawinski

Weidner

Henkel

et al. 2015

International Journal of Fatigue

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Section: Fatigue Livessupporting

confidence: 75%

Isothermal and thermo-mechanical fatigue behavior of the nickel base superalloy Waspaloy™ under uniaxial and biaxial-planar loading

Kulawinski

Weidner

Henkel

et al. 2015

International Journal of Fatigue

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“…Thus it can be deduced that the non-proportional hardening can increase the creep damage, which can be a main reason of that the fatigue life under MOPTIP loading is obviously lower than that under MIPTIP loading, as shown in Fig. 3 The extent of the oxidation damage also depends on the magnitude of stress and the temperature condition [23]. It can be deduced that the non-proportional hardening can increase the oxidation damage.…”

Section: Creep Damage Under At-tmf Loadingmentioning

confidence: 96%

Thermo-mechanical fatigue damage behavior for Ni-based superalloy under multiaxial loading

Shang

2018

MATEC Web Conf.

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Abstract. The fatigue damage behavior was experimentally investigated in different axial-torsional thermo-mechanical loading conditions for Ni-based superalloy GH4169. The strain controlled tests were carried out with the same von Mises equivalent mechanical strain amplitude of 0.8% in the temperature range from 360°C to 650°C. The results show that the fatigue life is drastically reduced when the axial mechanical strain and the temperature are in-phase, which can be due to that the creep damage is induced by the tensile stress at high temperature. Moreover, the fatigue life is further decreased when the axial mechanical strain and the shear strain are out-of-phase, which can be attributed to that the non-proportional hardening can increase the creep and the oxidation damages. Furthermore, the tensile stress is crucial to the nucleation of creep cavities at high temperature compared with the shear stress. The tensile and shear stresses all can increase the creep damage under fatigue loading at high temperature. In addition, the oxidation damage can be induced during cyclic loading at high temperature, and it can be increased by the tensile mean stress caused in non-isothermal loading.

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“…The authors also reported less accurate prediction of the TMF tests which lifetimes were systematically overestimated by the both models. In order to get a better prediction of TMF loadings, a creep phasing factor is defined [36]…”

Section: Incremental Lifetime Rulesmentioning

confidence: 99%

“…where the effective plastic strain range is defined based on (37) as ∆ε p eff = ε max − ε op − ∆σ eff /E. The relations (35)- (36) and (39)-(40) are very similar: they both include elastic and plastic contributions with different coefficients, which however insignificantly affect the computation of the lifetime. The principal qualitative distinction is that the latter accounts for the crack closing effect on the plastic term.…”

Section: Fatigue Lifetimes By Microcracks Growthmentioning

confidence: 99%

“…where σ is the peak stress,ε cr is the creep rate and n is the Norton exponent. Note the similarities between (36) and (44). Parameter (44) was taken in the integral form over the tensile portion of the loading history in order to compute the creep damage value, assuming that the compressive hold period did not contribute to creep damage [63].…”

Section: The Impact Of Creep Deformation On Damage Due To Microcrack mentioning

confidence: 99%

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Computational Methods for Lifetime Prediction of Metallic Components under High-Temperature Fatigue

Kindrachuk

Fedelich

Rehmer

et al. 2019

Metals

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The issue of service life prediction of hot metallic components subjected to cyclic loadings is addressed. Two classes of lifetime models are considered, namely, the incremental lifetime rules and the parametric models governed by the fracture mechanics concept. Examples of application to an austenitic cast iron are presented. In addition, computational techniques to accelerate the time integration of the incremental models throughout the fatigue loading history are discussed. They efficiently solve problems where a stabilized response of a component is not observed, for example due to the plastic strain which is no longer completely reversed and accumulates throughout the fatigue history. The performance of such an accelerated integration technique is demonstrated for a finite element simulation of a viscoplastic solid under repeating loading–unloading cycles.

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An approach to life prediction for a nickel-base superalloy under isothermal and thermo-mechanical loading conditions

Cited by 35 publications

References 8 publications

Isothermal and thermo-mechanical fatigue behavior of the nickel base superalloy Waspaloy™ under uniaxial and biaxial-planar loading

Isothermal and thermo-mechanical fatigue behavior of the nickel base superalloy Waspaloy™ under uniaxial and biaxial-planar loading

Thermo-mechanical fatigue damage behavior for Ni-based superalloy under multiaxial loading

Computational Methods for Lifetime Prediction of Metallic Components under High-Temperature Fatigue

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