Physically-based model for creep in nickel-base superalloy C263 both above and below the gamma solvus

Manonukul, Anchalee; Dunne, Fionn P.E.; Knowles, David

doi:10.1016/s1359-6454(02)00119-2

Cited by 95 publications

(69 citation statements)

References 9 publications

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“…With increasing test time precipitates dissolve and both specimens exhibit the same response. The dissolution of γ at higher temperatures has already been observed by other authors [3][4][5].…”

Section: Discussionsupporting

confidence: 70%

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Cyclic plasticity and lifetime of the nickel-based Alloy C-263: Experiments, models and component simulation

Maier

Hübsch

Riedel

et al. 2014

MATEC Web of Conferences

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Abstract. The present work deals with the thermomechanical fatigue and low-cycle fatigue behavior of C-263 in two different material conditions. Microstructural characteristics and fracture modes are investigated with light and electron microscopy. The experimental results indicate that viscoplastic deformations depend on the heat treatment or rather on the current state of the microstructure. The measured data are used to adjust the parameters of a Chaboche type model and a fracture-mechanics based model for fatigue lifetime prediction. The Chaboche model is able to describe the essential phenomena of time and temperature dependent cyclic plasticity including the complex cyclic hardening during thermo-cyclic loading of both material conditions with a unique set of material parameters. This could be achieved by including an additional internal variable into the Chaboche model which accounts for changes in the precipitation microstructure during high temperature loading. Furthermore, the proposed lifetime model is well suited for a common fatigue life prediction of both investigated heats. The deformation and lifetime models are implemented into a user defined material routine. In this work, the material routine is applied for the lifetime prediction of a critical power plant component using the finite element method.

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Section: Discussionsupporting

confidence: 70%

“…Fatigue, creep and precipitation behavior of different age hardened C-263 materials have been investigated by several other authors [3][4][5]. They developed physically based creep models considering the γ -precipitation.…”

Section: Introductionmentioning

confidence: 99%

Cyclic plasticity and lifetime of the nickel-based Alloy C-263: Experiments, models and component simulation

Maier

Hübsch

Riedel

et al. 2014

MATEC Web of Conferences

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show abstract

“…In group 2, three further creep tests were performed on identical bimodal samples with standard heat-treatment at 700℃, but the stresses are 750MPa, 720MPa and 660MPa, respectively. The group 2 creep tests were used to calculate the thermodynamic parameters in the crystal plasticity model [11] described later. The creep life and secondary creep rate are also shown in Table 3, and all the creep tests were terminated once a strain level of 3% had been achieved.…”

Section: Creep Tests Resultsmentioning

confidence: 99%

“…Gibbs developed a rate equation for dislocation movement from first principles using a statistical-thermodynamic analysis of dislocation glide controlled by dispersed local obstacles [11,20] . The creep strain rate, , is determined from the Orowan equation as (6) in which is the density of gliding dislocations with average velocity , and b is Burger's vector magnitude.…”

Section: Physically-based Creep Modelmentioning

confidence: 99%

“…The model proposed by Manonukul et al [11] indicates that there is a critical size of γ' precipitate, above which the activation volume is that relevant to dislocation bowing at precipitates, and can be determined by ∆V=lb 2 , in which l is the spacing between γ' precipitates, and b is the Burger vector magnitude. A critical activation volume ∆V c for cutting was introduced depending on a critical size of γ'.…”

Section: Assessment Of the Crystal Modelmentioning

confidence: 99%

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Mechanistic behaviour and modelling of creep in powder metallurgy FGH96 nickel superalloy

Peng

Tian

Jiang

et al. 2016

Materials Science and Engineering: A

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Physics‐Based Modeling of Thermo‐Mechanical Fatigue in PWA 1484

et al. 2012

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Thermomechanical fatigue (TMF) is a common damage process incurred by superalloys used for turbine components. Life modeling of TMF in superalloys has traditionally looked to phenomenological approaches for coupling the environmentalfatigue interactions occurring during TMF loading. While these approaches provide good predictive results within the range of test variables studied, they are not easily extrapolated to other conditions. A life model has been developed for single crystal Nibase superalloys experiencing out-of-phase (OP) TMF which explicitly couples the interactions between the dominant damage mechanisms and the base material evolution affecting inelastic deformation. This paper concentrates on the fundamental physics of the deformation and damage processes which are the foundation for the model. This study represents a fundamental experimental/analytical/numerical approach to life prediction under complex loading and thermal conditions. It integrates detailed dislocation substructure development, microstructural evolution, oxidation, constitutive behavior, solid mechanics and numerical modeling; resulting in very accurate and robust TMF life prediction capability.

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Physically-based model for creep in nickel-base superalloy C263 both above and below the gamma solvus

Cited by 95 publications

References 9 publications

Cyclic plasticity and lifetime of the nickel-based Alloy C-263: Experiments, models and component simulation

Cyclic plasticity and lifetime of the nickel-based Alloy C-263: Experiments, models and component simulation

Mechanistic behaviour and modelling of creep in powder metallurgy FGH96 nickel superalloy

Physics‐Based Modeling of Thermo‐Mechanical Fatigue in PWA 1484

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