Carbide phases in a multicomponent superalloy Ni-Co-W-Cr-Ta-Re

Pigrova, G. D.; Rybnikov, A. I.

doi:10.1134/s0031918x13070089

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…In this superalloy, 4 wt% of rhenium element is added to improve its creep strength. Various aspects of this superalloy such as its thermal fatigue and creep behaviour [13], microstructural investigation of ZHS32 after selective laser melting, vacuum heat treatment and hot isostatic pressing [14], and the influence of heat treatment on the composition of carbide phases [15] have been investigated.…”

Section: Introductionmentioning

confidence: 99%

Effect of aging heat treatment on the microstructure and hardness of a serviced ZHS32 superalloy

Shademani

Zadeh

Rahimipour

et al. 2019

Micro & Nano Letters

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According to the gradual changes of the microstructure of superalloys during harsh service condition of turbine blades and the detrimental effects of these changes on the mechanical properties of superalloys, performing of a rejuvenation heat treatment (solution treatment + aging process) on ex-serviced superalloys is necessary. In this work, the aging heat treatment was conducted on a serviced single crystal ZHS32 superalloy in the temperature range of 950-1150°C. It was found that while performing the aging process at 950 and 1050°C for 10 h did not provide appropriate conditions for the nucleation and growth of primary ϒ′ phases, conducting aging at the temperature of 1150°C for 10 and 16 h yields to the formation of ϒ′ precipitates with the desired cuboidal morphology. The comparison of the microstructure of the rejuvenated samples with the un-rejuvenated samples confirms that with applying this procedure, the size of strengthening ϒ′ precipitates reduces and the volume fraction of these phases considerably increases, which yields to the recovery of the superalloy microstructure and improvement of its mechanical properties such as hardness.

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Section: Introductionmentioning

confidence: 99%

Effect of aging heat treatment on the microstructure and hardness of a serviced ZHS32 superalloy

Shademani

Zadeh

Rahimipour

et al. 2019

Micro & Nano Letters

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“…Single crystals alloys are characterized by the presence of primary carbides of spherical, block or script-like morphology [14][15][16][17][18][19]. The main method for studying such fine structures is x-ray spectroscopy, which fully makes it possible to determine the main characteristics of the fine structure [20][21][22][23][24].…”

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confidence: 99%

Influence of Alloying Elements on Composition of Primary Carbides in Ni–11.5Cr–5Co–3.6Al–4.5Ti–7W–0.8Mo–0.06C System

Ol'shanetskii¹,

Глотка²

2022

Metallofiz. Noveishie Tekhnol.

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In this work, theoretical modelling of the thermodynamic processes of the release of excess phases is carried out using the CALPHAD method. As well as a practical study of the structure and distribution of chemical elements in carbides, depending on alloying using scanning electron microscopy. It has been established that in typical carbides, for the system Ni-11.5Cr-5Co-3.6Al-4.5Ti-7W-0.8Mo-0.06C, there is a tendency to degeneration and phase reactions depending on the level of alloying with the given elements. The mathematical dependences of the influence of alloying on the temperature of precipitation (dissolution) of carbides and the change in the chemical composition of the alloy on the content of elements in carbides are established. The obtained dependences were experimentally confirmed using scanning electron microscopy on nickel-based superalloys.

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Superalloys

Behera

2021

Advanced Materials

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Carbide phases in a multicomponent superalloy Ni-Co-W-Cr-Ta-Re

Cited by 4 publications

References 3 publications

Effect of aging heat treatment on the microstructure and hardness of a serviced ZHS32 superalloy

Effect of aging heat treatment on the microstructure and hardness of a serviced ZHS32 superalloy

Influence of Alloying Elements on Composition of Primary Carbides in Ni–11.5Cr–5Co–3.6Al–4.5Ti–7W–0.8Mo–0.06C System

Superalloys

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