Finite Element Simulation of Hot Strip Continuous Rolling Process Coupling Microstructural Evolution

Wang, Min-ting; Zang, Xin-liang; Li, Xuetong; Du, Fengshan

doi:10.1016/s1006-706x(07)60039-9

Cited by 22 publications

(12 citation statements)

References 13 publications

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“…Hwang et al (2002) have developed a rigid-visco-plastic finite element analysis to predict the thermomechanical responses of strip and work rolls in hot rolling operations. Wang et al (2007) have computed temperature and strain fields during hot rolling of low-carbon steels utilizing finite element formulations and at the same time, the microstructural changes were estimated by means of the predicted macro-parameters. Phaniraj et al (2005) have used a thermal-mechanical-metallurgical model to estimate temperature variations and phase transformations during hot strip rolling.…”

Section: Introductionmentioning

confidence: 99%

An upper-bound finite element solution for rolling of stainless steel 304L under warm and hot deformation conditions

Pourabdollah

Serajzadeh

2016

MMMS

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Purpose The purpose of this paper is to investigate the thermomechanical behavior of stainless steel AISI 304L during rolling at elevated temperatures. Design/methodology/approach Two-dimensional finite element analysis together with the upper-bound solution were used for predicting temperature field and required power in warm and hot rolling operations. The required power and heat of deformation were estimated employing an upper-bound solution based on cylindrical velocity field and at the same time, temperature distributions within the rolling steel and the work rolls were determined by means of a thermal finite element analysis. To consider the effect of flow stress and its dependence on temperature, strain and strain rate, a neural network model was used and combined with the thermal and mechanical models. Finally, the microstructure of rolled steel was studied and the effect of rolling conditions was justified employing the predictions. Findings The results have shown that the predicted temperature variations were in good agreement with the experiments. Moreover, the model was shown to be capable of determining the effects of various rolling parameters such as reduction and rolling speed with low-computational cost as well as reasonable accuracy. Originality/value A combined upper-bound finite element analysis was developed to predict the required power and temperature field during plate rolling while the model can be employed under both hot and warm rolling conditions.

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Section: Introductionmentioning

confidence: 99%

An upper-bound finite element solution for rolling of stainless steel 304L under warm and hot deformation conditions

Pourabdollah

Serajzadeh

2016

MMMS

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“…For example, it is impossible to obtain detailed information about the evolution of the temperature and stress-strain fields. Recently, the combination of physical metallurgy with computer simulation techniques, such as the finite element method (FEM), has been successfully used to investigate the effect of hot rolling process variables on the microstructures and properties of steels [7,8]. Song et al [7] developed a coupled two-dimensional elasticplastic thermal-mechanical model to simulate the hot ring rolling process, providing quantitative information regarding the ring shape, temperature, stress, and strain distributions.…”

Section: Introductionmentioning

confidence: 99%

“…Song et al [7] developed a coupled two-dimensional elasticplastic thermal-mechanical model to simulate the hot ring rolling process, providing quantitative information regarding the ring shape, temperature, stress, and strain distributions. Wang et al [8] studied the multipass continuous rolling process by using nonlinear rigid-viscoplastic FEM. However, limited work has so far been reported regarding applying FEM simulations to analyze the DSIT hot rolling process of steels.…”

Section: Introductionmentioning

confidence: 99%

Study of the Dynamic Strain-Induced Transformation Process of a Low-Carbon Steel: Experiment and Finite Element Simulation

He¹,

Ruan²,

Chen³

et al. 2016

Advances in Materials Science and Engineering

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The microstructures and mechanical properties of a low-carbon steel, hot-rolled by a six-pass dynamic strain-induced transformation (DSIT) process, with different start rolling temperatures, are studied by combining experiments and finite element simulations. The start rolling temperatures of the last three passes are about 10°C higher and 20°C lower than theAr3temperature, for Processes 1 and 2, respectively. The results show that as the rolling process proceeds, rolling forces increase, while slab temperatures decrease. Before starting Pass 4, the temperature of the slab center is higher than that of the slab surface. During Pass 4 to Pass 6, however, the temperatures of the slab center and surface are nearly identical but fluctuate remarkably due to the large reduction rate. The simulated maximum rolling force and start rolling temperature of each pass agree reasonably with the experimental measurements. It is found that the simulated start temperatures of the slab center in the last three passes are about 5~25°C higher than theAr3temperature for Process 1, and the DSIT condition is better satisfied for Process 2. As a result, Process 2 produces finer grain sizes and higher yield strengths than Process 1.

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“…Attention in warm and hot rolling processes has mostly been toward the prediction of temperature, strain and strain rate distributions in the rolled material, as these variables control the final microstructure and mechanical properties of the rolled product. [7][8][9] For instance, Wang et al 10 have considered temperature and strain fields in the strip, during hot rolling of lowcarbon steels, and studied the microstructural developments which occurred during the process. Moreover, temperature variations and thermal stresses of the work-roll during high-temperature rolling operations have been studied in a few works.…”

Section: Introductionmentioning

confidence: 99%

Finite element modeling of thermal and mechanical stresses in work-rolls of warm strip rolling process

Koohbor

2015

Proceedings of the Institution of Mechanical Engineers, Part B:

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An integrated mathematical model was developed to study the thermo-mechanical behavior of strips and work-rolls during warm rolling process of steels. A two-dimensional finite element analysis was first employed to solve for the thermomechanical response of the rolled strip under steady-state conditions. The calculated roll pressure and temperature fields were then used to apply proper boundary conditions for solving the governing thermo-mechanical problem for the work-roll. The obtained results indicate that in warm strip rolling of steels, the thermal and mechanical stresses developed within the work-roll are comparable; however, the more significant influence is due to heating and cooling of the work-roll during the process, particularly in case of warm rolling operations of the strips with higher initial temperature. Besides, the utilized model was shown to be capable of determining the effects of various rolling parameters on the thermo-mechanical behavior of strips and work-rolls during warm rolling process.

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Finite Element Simulation of Hot Strip Continuous Rolling Process Coupling Microstructural Evolution

Cited by 22 publications

References 13 publications

An upper-bound finite element solution for rolling of stainless steel 304L under warm and hot deformation conditions

An upper-bound finite element solution for rolling of stainless steel 304L under warm and hot deformation conditions

Study of the Dynamic Strain-Induced Transformation Process of a Low-Carbon Steel: Experiment and Finite Element Simulation

Finite element modeling of thermal and mechanical stresses in work-rolls of warm strip rolling process

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