Constitutive equation and dynamic recrystallization behavior of ultra high strength steel A100

Lin Faju; Li Xiong; Wu Chengchuan

doi:10.7513/j.issn.1004-7638.2023.02.027

Volume 44 Issue 2

Apr. 2023

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Lin Faju, Li Xiong, Wu Chengchuan. Constitutive equation and dynamic recrystallization behavior of ultra high strength steel A100[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(2): 187-193. doi: 10.7513/j.issn.1004-7638.2023.02.027

Citation:

Lin Faju, Li Xiong, Wu Chengchuan. Constitutive equation and dynamic recrystallization behavior of ultra high strength steel A100[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(2): 187-193. doi: 10.7513/j.issn.1004-7638.2023.02.027

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Constitutive equation and dynamic recrystallization behavior of ultra high strength steel A100

doi: 10.7513/j.issn.1004-7638.2023.02.027

Lin Faju^{1, 2
,},
Li Xiong^{1, 2},
Wu Chengchuan^{1, 2}

1.
Pangang Group Research Institute Co., Ltd., Panzhihua 617000 , Sichuan, China
2.
State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan114009 , Liaoning, China

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Received Date: 2022-08-01
Publish Date: 2023-04-30

Abstract

Abstract

The flow stress behavior of A100 ultra-high strength steel under the conditions of strain rate of 0.01~10 s⁻¹, deformation of 63.3% and deformation temperature of 850～1 200 ℃ was studied by compression test with a Gleeble-3500 thermal simulation test machine, and the dynamic recrystallization behavior under different deformation conditions was analyzed combined with microstructure observation. The results show that the flow stress of A100 steel decreases with the increase of temperature and increases with the increase of strain rate. Dynamic recovery mainly occurs at 850 ℃, and dynamic recrystallization occurs at deformation temperature of 900～1 200 ℃ and strain rate of 0.01～10 s⁻¹. Based on Arrhenius hyperbolic sine model, the constitutive equation of high strength steel A100 is established by using linear regression method, which provides a theoretical basis for the numerical simulation of A100 steel and the formulation of hot working process.
- ultra-high strength steel,
- A100,
- flow stress,
- activation energy of deformation,
- dynamic recrystallization

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References(16)

References

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