Corrosion fatigue crack growth behavior of oil-grade nickel-base alloy 718. Part 2: Effect of aging treatment

Chen, Ting; Nutter, Jared; Bai, Jingsheng; Hawk, Jeffrey A.; Liu, Xingbo

doi:10.1016/j.corsci.2015.05.033

Cited by 21 publications

(4 citation statements)

References 31 publications

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“…The results clearly indicate that microstructural particularities, which defines not only the strength but also the corrosion resistance in alloy 718, play a relevant role in its CF behavior. This contrast with preliminary results, where no significant differences in the corrosion fatigue crack propagation rate in a 3.5 wt % NaCl-solution at 80 • C between two metallurgical conditions of alloy 718 were observed [29]. This disagreement could be attributed to the test environment used in the present study, which contains a higher chloride concentration, and to the higher test temperature.…”

Section: Discussioncontrasting

confidence: 99%

On the Influence of the Microstructure upon the Fatigue and Corrosion Fatigue Behavior of UNS N07718

Engler¹,

Klapper

Oechsner³

2021

Metals

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Due to the challenging operational conditions occurring during drilling, e.g., in the oil and gas industry, the corrosion fatigue (CF) behavior of materials used in drillstring components needs to be well understood. The combination of cyclic mechanic loads and a corrosive environment can affect significantly the integrity of a material, which has to be taken into account when selecting and qualifying materials for drilling equipment. Nickel alloys such as the precipitation-hardenable alloy 718 (UNS N07718) are widely used in many industrial applications including subterranean drilling. In the present study, the fatigue and CF behavior of alloy 718 in three different metallurgical conditions was investigated. The CF behavior of the different conditions was determined using customized rotating bending machines enabling testing in a simulated drilling environment at 125 °C. Results have shown that the fatigue and CF strength of alloy 718 is affected by its microstructural particularities, for instance, the amount of strengthening phases and δ-phase.

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Section: Discussioncontrasting

confidence: 99%

On the Influence of the Microstructure upon the Fatigue and Corrosion Fatigue Behavior of UNS N07718

Engler¹,

Klapper

Oechsner³

2021

Metals

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“…Hydrogen embrittlement in H 2 S-containing solutions has not generally been observed in 718, with the exception of a result from slow-strain rate testing [87]. In contrast to SCC/HE, precipitation of γ and γ′ in alloy 718 upon aging decreased the fatigue CGR ( R ratio of 0.1 and frequency of 1 Hz) in NaCl solutions [89].…”

Section: Effect Of Metallurgical Variables On Scc and Hementioning

confidence: 99%

Corrosion-resistant alloy testing and selection for oil and gas production

Sridhar¹,

Thodla²,

Gui³

et al. 2017

Corrosion Engineering, Science and Technology

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Corrosion-resistant alloys (CRAs) are employed in severe oil and gas production environments that operate at high pressures and temperatures and contain chlorides, CO 2 , and H 2 S. They exhibit high resistance to uniform corrosion in these environments due to their passivity. However, they can suffer from different forms of environmentally assisted cracking (EAC), depending on the environmental and metallurgical conditions. This paper reviews the recent literature of EAC in CRAs and presents an overall framework for evaluating the SCC based on electrochemical modelling of corrosion and repassivation potentials for localised corrosion. The modelling is supported by experimental data on crack growth as a function of environmental variables, alloy content, and potential.

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“…IN 718 Ni-based SA is known to possess higher tensile strength, excellent creep resistance, low-cycle fatigue strength, good formability and weldability [1][2][3][4][5][6][7][8][9][10]. Hence, it is often chosen as a good alloy, to be used for high speed machinery shafts.…”

Section: Introductionmentioning

confidence: 99%

Tribological Behavior of Inconel 718 Nickel-Based Super Alloy Doped with Graphene Nanoplatelets

Khoele¹,

Ama²,

Disai³

et al. 2023

Port. Electrochim. Acta

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In continuation of our previously published work entitled Mechanical and CorrosionBehavior of Inconel 718 Nickel-Based Super Alloy Doped with Graphene Nanoplatelets, the present study investigated the tribological performance of modified IN 718 doped with GrNs. Friction and wear properties were analised using an advance universal tribometer, while surface mophologies were studied by SEM. The modified SA tribological properties validation was done in relative comparison to those of pure IN 718. Mechanical properties with higher , younger modulus values, better morphologies, higher AWI, lower SWR and µ values were noted on the modified IN 718. Nonetheless, an increase in the load proved to affect the tribological oxide layer properties of both pure and modified IN 718.

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Corrosion fatigue crack growth behavior of oil-grade nickel-base alloy 718. Part 2: Effect of aging treatment

Cited by 21 publications

References 31 publications

On the Influence of the Microstructure upon the Fatigue and Corrosion Fatigue Behavior of UNS N07718

On the Influence of the Microstructure upon the Fatigue and Corrosion Fatigue Behavior of UNS N07718

Corrosion-resistant alloy testing and selection for oil and gas production

Tribological Behavior of Inconel 718 Nickel-Based Super Alloy Doped with Graphene Nanoplatelets

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