Study on the hot deformation behaviors of B50A789G blade steel

Yu Zhanyang; Xin Ruishan; He Yudong; Yao Bin; Wu Zhiwei; Zhao Jiqing; Li Xiaokai; Cao Chenxing

doi:10.7513/j.issn.1004-7638.2024.04.028

Volume 45 Issue 4

Aug. 2024

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Article Navigation > IRON STEEL VANADIUM TITANIUM > 2024 > 45(4): 198-204

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Yu Zhanyang, Xin Ruishan, He Yudong, Yao Bin, Wu Zhiwei, Zhao Jiqing, Li Xiaokai, Cao Chenxing. Study on the hot deformation behaviors of B50A789G blade steel[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(4): 198-204. doi: 10.7513/j.issn.1004-7638.2024.04.028

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Study on the hot deformation behaviors of B50A789G blade steel

doi: 10.7513/j.issn.1004-7638.2024.04.028

1.
Ansteel Beijing Research Institute Co., Ltd., Beijing 102211, China
2.
Pangang Group Jiangyou Changcheng Special Steel Co., Ltd., Jiangyou 621700, Sichuan, China
3.
Chengdu Advanced Metallic Materials Industry Technology Research Institute Co., Ltd., Chengdu 610300, Sichuan, China
4.
Special Steels Research Institute, Central Iron and Steel Research Institute Co., Ltd., Beijing 100081, China

Received Date: 2023-05-16
Publish Date: 2024-08-30

Abstract

Abstract

The isothermal hot compression test of B50A789G blade steel was conducted by Gleeble-3800 thermo-mechanical simulator in the strain rate range of 0.01-10 s⁻¹ and the deformation temperature range of 950-1200 ℃. Based on Arrhenius hyperbolic sine equation, the constitutive equation was established．The hot processing map was constructed based on dynamic material model (DMM). The hot working window was determined on the basis of hot processing map and deformed microstructures．The results show that the optimum domain for hot forming of B50A789G blade steel is determined in the temperature ranges of 1000-1050 ℃ with strain rates of 0.01-10 s⁻¹ and 1150-1200 ℃ with strain rates of 1-10 s⁻¹, respectively. It is found that complete dynamic recrystallization occurs in this domain．In addition, the grain size distribution of original austenite is uniform and fine, which is conducive to the homogenization and refinement of the material microstructures. This study provides support for the industrial application of B50A789G blade steel.
- blade steel,
- hot deformation behavious,
- constitutive equation,
- hot processing map,
- dynamic recrystallization

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References

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