Effect of Ta Addition on the Microstructure and Tensile Properties of a Ni-Co Base Superalloy

Zhu, Chen; Zhang, Rong; Cui, Chuanyong; Zhou, Yu; Yuan, Yong; Yu, Zhi-Qiang; Liu, X.; Sun, Xiaofeng

doi:10.1007/s11661-020-06081-9

Cited by 28 publications

(2 citation statements)

References 40 publications

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“…The National Institute for Materials Science of Japan successfully developed the TMW series Ni-Co-based superalloys first by reducing SFE [8]. Compared with the stronger cast-forged U720Li superalloy, the temperature-bearing capacity of this Ni-Co-based superalloy can be increased by 30 • C. The mechanical properties and structural stability of Ni-Co-based superalloys are better than those of the U720Li superalloy, which is expected to become a key material for hot-end components [9][10][11][12]. With the unstoppable trend of product miniaturization in many fields such as aerospace, the nuclear industry, weapons equipment, and energy, precise plastic forming technology of Ni-Co-based superalloy micro components is a key task that needs to be solved urgently.…”

Section: Introductionmentioning

confidence: 99%

Effects of Ultra-Low Temperatures on the Mechanical Properties and Microstructure Evolution of a Ni-Co-Based Superalloy Thin Sheet during Micro-Tensile Deformation

Zhu,

Wang,

Sun

et al. 2023

Materials

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With the development of product miniaturization in aerospace, the nuclear industry, and other fields, Ni-Co-based superalloys with excellent overall properties have become key materials for micro components in these fields. In the microforming field, size effects significantly impact the mechanical properties and plastic deformation behavior of materials. In this paper, micro-tensile experiments at room temperature and an ultra-low temperature were carried out to study the effects of initial microstructure and deformation temperature on the deformation behavior of Ni-Co-based superalloy thin sheets. The results show that as the ratio of specimen thickness to grain size (t/d) decreased from 8.6 to 2.4, the tensile strength σb decreased from 1221 MPa to 1090 MPa, the yield strength σs decreased from 793 MPa to 622 MPa, and the elongation decreased from 0.26 to 0.21 at room temperature. When t/d decreased from 8.6 to 2.4, σb decreased from 1458 MPa to 1132 MPa, σs decreased from 917 MPa to 730 MPa, and the elongation decreased from 0.31 to 0.28 at ultra-low temperatures. When t/d decreased from 8.6 to 2.4, the surface roughness of the specimen increased from 0.769 to 0.890 at room temperature and increased from 0.648 to 0.809 at ultra-low temperatures. During the microplastic deformation process of Ni-Co-based superalloy thin sheets, the coupled effects of surface roughening caused by free surface grains and hindered dislocation movement induced by grain boundary resulted in strain localization, which caused fracture failure of Ni-Co-based superalloy thin sheets.

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Section: Introductionmentioning

confidence: 99%

Effects of Ultra-Low Temperatures on the Mechanical Properties and Microstructure Evolution of a Ni-Co-Based Superalloy Thin Sheet during Micro-Tensile Deformation

Zhu,

Wang,

Sun

et al. 2023

Materials

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“…They influence on mechanical properties depending on their morphology and distribution. 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].…”

mentioning

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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The Effect of Ta Additions on a Low γ′ Volume Fraction Ni–Fe Base Superalloy System

Liu

Tin

2022

Metall Mater Trans A

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Effect of Ta Addition on the Microstructure and Tensile Properties of a Ni-Co Base Superalloy

Cited by 28 publications

References 40 publications

Effects of Ultra-Low Temperatures on the Mechanical Properties and Microstructure Evolution of a Ni-Co-Based Superalloy Thin Sheet during Micro-Tensile Deformation

Effects of Ultra-Low Temperatures on the Mechanical Properties and Microstructure Evolution of a Ni-Co-Based Superalloy Thin Sheet during Micro-Tensile Deformation

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

The Effect of Ta Additions on a Low γ′ Volume Fraction Ni–Fe Base Superalloy System

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