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Modeling and simulation of dynamic recrystallization behavior for Q890 steel plate based on plane strain compression tests
Open Physics ( IF 1.9 ) Pub Date : 2020-07-28 , DOI: 10.1515/phys-2020-0166
Lei Yang 1 , Yi-Zhu He 1
Affiliation  

Abstract In view that the traditional dynamic recrystallization (DRX) model cannot effectively predict the DRX process in the hot deformation process of sheet metal, DRX behavior modeling and simulation of q890 steel plate based on the plane strain compression test are designed. The plane strain thermal simulation tests were performed at 1,223–1,373 K and the strain rates of 1–50−1 on Gleeble-3500 thermal–mechanical simulator. The flow stress curves were well smoothed. The stress–strain data were investigated for the analysis of the dynamic recrystallization in the process of thermal deformation. The activation energy of DRX was calculated as Q = 394.53 kJ/mol by the simulation data. The equation of peak strain was developed with the flow stress data by the Zener–Hollomon parameter. The DRX transformation fraction of Q890 steel was studied, and the DRX kinetics equation was developed by the Avrami equation. The experimental data are in good agreement with the calculated values, which proves the reliability of the DRX model and can be widely used in real life.

中文翻译:

基于平面应变压缩试验的Q890钢板动态再结晶行为建模与仿真

摘要 针对传统动态再结晶(DRX)模型不能有效预测板料热变形过程中的DRX过程,设计了基于平面应变压缩试验的q890钢板DRX行为建模与仿真。平面应变热模拟测试在 Gleeble-3500 热机械模拟器上在 1,223-1,373 K 和 1-50-1 的应变率下进行。流动应力曲线非常平滑。应力-应变数据用于分析热变形过程中的动态再结晶。根据模拟数据计算出 DRX 的活化能为 Q = 394.53 kJ/mol。峰值应变方程是通过 Zener-Hollomon 参数用流动应力数据建立的。研究了Q890钢的DRX相变分数,DRX动力学方程由Avrami方程发展而来。实验数据与计算值吻合较好,证明了DRX模型的可靠性,可广泛应用于现实生活中。
更新日期:2020-07-28
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