Effect of μ precipitation and γ′ evolution on intra-/intergranular strength of Ni-Co-Cr-based superalloys after 800 ℃ thermal exposure

Wang, Zhaotian; Ning, Yongquan; Huang, Shuo; Di, Peng; Liu, Qiaomu

doi:10.1016/j.jallcom.2024.175073

Journal of Alloys and Compounds

2024

DOI: 10.1016/j.jallcom.2024.175073

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Effect of μ precipitation and γ′ evolution on intra-/intergranular strength of Ni-Co-Cr-based superalloys after 800 ℃ thermal exposure

Zhaotian Wang,

Yongquan Ning,

Shuo Huang

et al.

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Cited by 2 publications

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Mechanical degradation behavior and γ′ coarsening mechanism of a Ni-based superalloy during long-term high-temperature thermal exposure

Wang,

Ning,

et al. 2024

Journal of Materials Research and Technology

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Mechanical degradation behavior and γ′ coarsening mechanism of a Ni-based superalloy during long-term high-temperature thermal exposure

Wang,

Ning,

et al. 2024

Journal of Materials Research and Technology

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Effect of Primary γ′ Phase on High-Temperature Endurance Performance of GH4720Li Superalloy

Zhou,

Dong,

Xie

et al. 2024

Crystals

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To investigate the effect of the primary γ′ phase on the high-temperature endurance performance of GH4720Li superalloy, samples with different volume fractions of the primary γ′ phase were prepared by adjusting the heat treatment process. The high-temperature endurance performance was tested, and the microstructure was examined. Results indicate that samples with a higher volume fraction of the γ′ phase exhibit a greater stress rupture life. Additionally, alloy samples with varying γ′ phase volume fractions show improved plasticity and toughness at 760 °C/530 MPa. Fracture morphology results reveal that high-volume-fraction primary γ′ phase samples primarily undergo transgranular fracture, whereas low-volume-fraction samples exhibit intergranular fracture due to grain boundary sliding. During high-temperature endurance, the secondary γ′ phase in the crystal is affected. Long-term aging refines the secondary γ′ phase, resulting in a more uniform distribution. Finally, the influence of the primary γ′ phase and the creep behavior of each material group on high-temperature endurance performance are discussed.

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Effect of μ precipitation and γ′ evolution on intra-/intergranular strength of Ni-Co-Cr-based superalloys after 800 ℃ thermal exposure

Cited by 2 publications

References 32 publications

Mechanical degradation behavior and γ′ coarsening mechanism of a Ni-based superalloy during long-term high-temperature thermal exposure

Mechanical degradation behavior and γ′ coarsening mechanism of a Ni-based superalloy during long-term high-temperature thermal exposure

Effect of Primary γ′ Phase on High-Temperature Endurance Performance of GH4720Li Superalloy

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Effect of μ precipitation and γ′ evolution on intra-/intergranular strength of Ni-Co-Cr-based superalloys after 800 ℃ thermal exposure

Cited by 2 publications

References 32 publications

Mechanical degradation behavior and γ′ coarsening mechanism of a Ni-based superalloy during long-term high-temperature thermal exposure

Mechanical degradation behavior and γ′ coarsening mechanism of a Ni-based superalloy during long-term high-temperature thermal exposure

Effect of Primary γ′ Phase on High-Temperature Endurance Performance of GH4720Li Superalloy

Contact Info

Product

Resources

About

Effect of μ precipitation and γ′ evolution on intra-/intergranular strength of Ni-Co-Cr-based superalloys after 800 ℃ thermal exposure