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Hot Deformation Behavior of Q345 Steel and Its Application in Rapid Shear Connection

1
School of Materials Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, Hebei, China
2
Hebei Key Laboratory of Material Near-Net Forming Technology, Hebei University of Science and Technology, Shijiazhuang 050018, Hebei, China
3
School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, Hebei, China
*
Author to whom correspondence should be addressed.
Materials 2019, 12(13), 2186; https://doi.org/10.3390/ma12132186
Received: 28 May 2019 / Revised: 1 July 2019 / Accepted: 2 July 2019 / Published: 7 July 2019
(This article belongs to the Special Issue Development of the Rolling Process in Metallic Materials)
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Abstract

The high-temperature deformation behavior of Q345 steel is detected by a Gleeble-3800 thermal simulator. The Arrhenius constitutive equation for high-temperature flow stress and the dynamic recrystallization model are constructed. With the secondary development technology, customized modifications are made on existing Deform-3D software. The constructed constitutive model and dynamic recrystallization model are embedded into Deform-3D to realize the secondary development of Deform-3D. The grain size and volume percentage distribution of dynamic recrystallization are obtained by simulating the shear connection process at high temperature and high speed. The results show that the constitutive equation and the dynamic recrystallization model constructed in this paper can be used to predict the evolution of the microstructure. The difference between the prediction results and the experimental data is about 3%. The accuracy of Arrhenius constitutive equation, dynamic recrystallization model and the feasibility of software secondary development are verified. View Full-Text
Keywords: the thermal deformation behavior; Arrhenius constitutive equation; dynamic recrystallization model; secondary development; shear connection; microstructural evolution the thermal deformation behavior; Arrhenius constitutive equation; dynamic recrystallization model; secondary development; shear connection; microstructural evolution
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Wu, M.; Zhang, S.; Ma, S.; Yan, H.; Wang, W.; Li, Q. Hot Deformation Behavior of Q345 Steel and Its Application in Rapid Shear Connection. Materials 2019, 12, 2186.

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