Creep behavior in the new AD730TM nickel-based disk superalloy – Influence of aging heat treatment and local chemical fluctuations

Pettinari‐Sturmel, Florence; Vultos, Winnie; Hantcherli, Muriel; Warot-Fonrose, Bénédicte; Marcelot, Cécile; Douin, Joël; Cormier, Jonathan; Villechaise, Patrick; Devaux, Alexandre

doi:10.1016/j.msea.2019.02.088

Cited by 14 publications

(3 citation statements)

References 36 publications

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“…At a given temperature, take the logarithm of both sides of Equation (1) and convert it to Equation (2): lg…”

Section: Creep Damage and Endurance Life Predictionmentioning

confidence: 99%

“…The first one is the traditional casting and forging (C & W) process. For example, the superalloys such as Inconel718, U720Li, and AD730TM, which have service temperature of 650-700 • C, are produced by the C & W process [2]. The second one is made by the powder metallurgy (PM) process, that is, vacuum induction melting + argon atomization powder making + electrostatic powder screening and then canning + compacting (hot pressing, hot isostatic pressing, extrusion) + the hot working deformation (isothermal forging, die forging) process.…”

Section: Introductionmentioning

confidence: 99%

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Influences of a Hot-Working Process on the Microstructural Evolution and Creep Performance of a Spray-Formed Nickel-Based Superalloy

Tian

Chen

et al. 2020

Metals

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A new third generation nickel-based powder metallurgy (PM) superalloy, designated as FGH100L, was prepared by spray forming. The effects of hot isostatic pressing (HIP) and isothermal forging (IF) processes on the creep performance, microstructure, fracture, and creep deformation mechanism of the alloy were studied. The microstructure and fracture were characterized by optical microscopy (OM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The coupled HIP and IF process improved the creep performance of the alloy under the creep condition of 705 °C/897 MPa. As for both the HIPed and IFed alloys, the creep process was dominated by the accumulation of dislocations and stacking faults, cutting through γ’ precipitates. The microstructural evolution was the main factor affecting the creep performance, which mainly manifested as coarsening, splitting, and morphology change of γ’ precipitates. Both the creep fractures of the HIPed and IFed alloys indicated intergranular fracture characteristics. In the former, wedge-shaped cracks usually initiated at the trigeminal intersection of the grain boundaries, while in the latter, cavity cracks generate more easily around the serrated curved grain boundary and carbides.

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“…At a given temperature, take the logarithm of both sides of Equation (1) and convert it to Equation (2): lg…”

Section: Creep Damage and Endurance Life Predictionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influences of a Hot-Working Process on the Microstructural Evolution and Creep Performance of a Spray-Formed Nickel-Based Superalloy

Tian

Chen

et al. 2020

Metals

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“…In [12], methods for producing coatings using simultaneously two components of a saturating mixture are experimentally investigated. It is established that two-component coatings expand the field of application of the layers, for example, Alloying with chromium borides reduces the fragility of the latter.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determination of the peculiarities of obtaining coatings of different hardness on structural steel at diffusion metalization

Марков

Diachenko

Aliievа

et al. 2019

EEJET

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Metallurgical Mechanisms upon Stress Relaxation Annealing of the AD730TM Superalloy

et al. 2020

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Tout d'abord, je remercie mes encadrants académiques Nathalie BOZZOLO et Jonathan CORMIER ainsi que mon encandrant industriel Jean-Michel FRANCHET pour toute l'énergie investie, votre soutien et la grande disponibilité dont vous avez su faire preuve tout au long de ces trois belles années. Je suis ravi d'avoir travaillé en votre compagnie car outre l'appui scientifique, vous avez toujours été là pour me soutenir et me conseiller au cours de la construction de cette thèse. Vos futurs doctorants ne savent pas encore la chance qu'ils auront de vous côtoyer.Ce travail n'aurait pu être mené à bien sans les collaborations, la disponibilité et l'accueil des personnes qui ont gravité autour de sujet. Je tiens donc à remercier chaleureuse-

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Creep behavior in the new AD730TM nickel-based disk superalloy – Influence of aging heat treatment and local chemical fluctuations

Cited by 14 publications

References 36 publications

Influences of a Hot-Working Process on the Microstructural Evolution and Creep Performance of a Spray-Formed Nickel-Based Superalloy

Influences of a Hot-Working Process on the Microstructural Evolution and Creep Performance of a Spray-Formed Nickel-Based Superalloy

Determination of the peculiarities of obtaining coatings of different hardness on structural steel at diffusion metalization

Metallurgical Mechanisms upon Stress Relaxation Annealing of the AD730TM Superalloy

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