Fatigue and fracture behavior of nickel-based superalloy Inconel 718 up to the very high cycle regime

Ma, Xianfeng; Duan, Zhihui; Shi, Hui‐Ji; Murai, Ryosuke; Yanagisawa, Eiichi

doi:10.1631/jzus.a1000171

Cited by 53 publications

(29 citation statements)

References 33 publications

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“…With lower annealing temperatures, as used in the work of Bürgel 1 and Okazaki, 3 cellular RX with coarser γ/γ′ would be formed, which has poor mechanical properties compared with the raw SX. 23 Note that the conclusions obtained here are under the present testing conditions, especially the temperature. 3a, the morphology and size of γ′ precipitate are comparable with that of the SX substrate.…”

Section: Indication From the Fracture Of Recrystallizationmentioning

confidence: 50%

“…The transgranular fracture is mainly induced by crystallographic slipdominated deformation mechanism at this temperature, similar to the fracture mode of DS superalloy 15 or polycrystalline nickel-based superalloy. 23 Note that the conclusions obtained here are under the present testing conditions, especially the temperature. At higher temperatures (e.g.…”

Section: Indication From the Fracture Of Recrystallizationmentioning

confidence: 50%

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Influence of surface recrystallization on the low cycle fatigue behaviour of a single crystal superalloy

Shi

et al. 2014

Fatigue Fract Eng Mat Struct

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This paper investigated the effect of surface recrystallization (RX) on the low cycle fatigue (LCF) behaviour of a single crystal (SX) superalloy. LCF tests on both raw and recrystallized samples showed that fatigue life was significantly reduced by surface RX. Fractography indicated that fatigue cracks initiated from the casting defects in RX layer and multiple crack initiations were commonly observed. Moreover, RX grains exhibited predominantly transgranular cracking, in contrast to the intergranular fracture reported in literature. The fatigue crack propagation behaviour was discussed in light of fracture mechanics and crack growth life model. The fatigue cycles required to penetrate RX layer were estimated to be about one magnitude lower than that in forming an equivalent crack in SX specimens. It is suggested that the earlier crack initiation and promoted crack propagation in RX layer, as well as the trend of multiple initiations, are responsible for the fatigue degradation by RX.

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Section: Indication From the Fracture Of Recrystallizationmentioning

confidence: 50%

Section: Indication From the Fracture Of Recrystallizationmentioning

confidence: 50%

Influence of surface recrystallization on the low cycle fatigue behaviour of a single crystal superalloy

Shi

et al. 2014

Fatigue Fract Eng Mat Struct

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“…The crack source is typically with cleaver fracture feature. A detailed description of the fracture feature at 52.5 Hz case has been done in our previous work [19]. The fracture feature at 20 kHz feature will be discussed in the following.…”

Section: Fractographymentioning

confidence: 99%

Notice of Retraction: Load frequency effect on gigacycle fatigue properties of superalloy inconel 718

Duan

Shi

2010

2010 2nd International Conference on Computer Engineering and Technology

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Fatigue behaviors of the superalloy inconel 718 under gigacycle regime with load frequencies of 52.5 Hz and 20 kHz were investigated in this paper. The results indicated that there are gigacycle fatigue failure behaviors for this material. On the one hand, some specimens were submitted to conventional rotating bending experiments with a frequency of 52.5 Hz. On the other hand some were submitted to 20 kHz ultrasonic loading experiments. Apparently, different S-N curves could be observed for both experiments. The fracture photographs through SEM were compared and the effects of the frequency on the fracture mechanism were analyzed.

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“…Comparison: Application of CA model to present work Table 5 Fatigue properties of PC superalloy (Ma et. al., 2010).…”

Section: (A) Stress Intensity Factorsmentioning

confidence: 99%

Role of tangential force coefficient on fretting fatigue life estimation of a single crystal Ni-base superalloy

Rengaraj

Baba

Okazaki

2017

Mechanical Engineering Journal

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Fretting fatigue behavior of Ni-base superalloys used in gas turbine blades and disk assemblies have been investigated under ambient and high temperature conditions. A major emphasis was placed on the influence of experimentally measured tangential force coefficient on the fretting fatigue life prediction of a single crystal superalloy. Significant differences in the experimental fretting fatigue lives with respect to contacting superalloy combinations were found. These experimental findings were correlated with an analytical approach for the estimation of fretting fatigue life. The predicted results employing the crack analogue model provided good agreement with the experimental results. Also, the influence of secondary crystal orientation of single crystal superalloy on the frictional response and fretting fatigue life prediction was highlighted.

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Fatigue and fracture behavior of nickel-based superalloy Inconel 718 up to the very high cycle regime

Cited by 53 publications

References 33 publications

Influence of surface recrystallization on the low cycle fatigue behaviour of a single crystal superalloy

Influence of surface recrystallization on the low cycle fatigue behaviour of a single crystal superalloy

Notice of Retraction: Load frequency effect on gigacycle fatigue properties of superalloy inconel 718

Role of tangential force coefficient on fretting fatigue life estimation of a single crystal Ni-base superalloy

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