Effect of precipitates on the creep rupture behavior of GH4141 superalloy

Zhang Zhao; Feng Xu; Guo Xulong; Zhang Weiwei; Wang Kaimeng; Xin Ruishan; Pei Binghong; Xiao Dongping; Zhou Yang

doi:10.7513/j.issn.1004-7638.2024.04.017

Volume 45 Issue 4

Aug. 2024

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Zhang Zhao, Feng Xu, Guo Xulong, Zhang Weiwei, Wang Kaimeng, Xin Ruishan, Pei Binghong, Xiao Dongping, Zhou Yang. Effect of precipitates on the creep rupture behavior of GH4141 superalloy[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(4): 123-128. doi: 10.7513/j.issn.1004-7638.2024.04.017

Citation:

Zhang Zhao, Feng Xu, Guo Xulong, Zhang Weiwei, Wang Kaimeng, Xin Ruishan, Pei Binghong, Xiao Dongping, Zhou Yang. Effect of precipitates on the creep rupture behavior of GH4141 superalloy[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(4): 123-128. doi: 10.7513/j.issn.1004-7638.2024.04.017

Citation:

Zhang Zhao, Feng Xu, Guo Xulong, Zhang Weiwei, Wang Kaimeng, Xin Ruishan, Pei Binghong, Xiao Dongping, Zhou Yang. Effect of precipitates on the creep rupture behavior of GH4141 superalloy[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(4): 123-128. doi: 10.7513/j.issn.1004-7638.2024.04.017

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Effect of precipitates on the creep rupture behavior of GH4141 superalloy

doi: 10.7513/j.issn.1004-7638.2024.04.017

1.
Ansteel Beijing Research Institute Co., Ltd., Beijing 102200, China
2.
State Key Laboratory of Metallic Materials for Marine Equipment and Application, Anshan 114009, Liaoning, China
3.
Pangang Group Jiangyou Changcheng Special Steels Co., Ltd., Jiangyou 621704, Sichuan, China
4.
Chengdu Advanced Metallic Materials Industrial Technology Institute Co., Ltd., Chengdu 610303, Sichuan, China

Received Date: 2023-06-01
Publish Date: 2024-08-30

Abstract

Abstract

This study focused on the effect of precipitates on the creep rupture behavior of GH4141 superalloy, involving creep crack initiation and propagation. Microstructures including carbides, γ′ precipitate hardening phase, void and intergranular crack were characterized by SE and EBSD. Meanwhile, plastic deformation and hardening mechanisms for crystal grains were analyzed. Voids occurred at the interfaces of grain boundary and carbides. Voids coalescence with wavy morphology were observed. The increase in crack length enhanced plastic deformation degree in front of the crack tip. The crystal grain strengthening was caused by the suppression of dislocation motion resulting from γ′ pinning effect. Due to the activation of multiple glide systems, dislocation piled up and tangled to enable crystal grain strengthening.
- GH4141 superalloy,
- creep rupture,
- precipitate,
- crack propagation,
- precipitates hardening

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References(11)

References

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