Prediction of low carbon steels behaviour under hot rolling service conditions

Kováč, František; Dzubinsky, Mykola; Boruta, J.

doi:10.1016/s1359-6454(02)00578-5

Cited by 8 publications

(6 citation statements)

References 14 publications

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“…Therefore, temperature distribution should concurrently be evaluated employing Eq. (11). The thermal and deformation boundary conditions used for the heat conduction and plastic deformation equations are:…”

Section: Mathematical Modelmentioning

confidence: 99%

“…In addition, to determine flow stress at the strains greater than the critical strain (( c ) Eqs. (10), (11) and (6) will be solved at the same time. For doing so, four-node isoparametric elements are used for the finite element formulation and in order to solve the nonlinear system of resulting equations Newton -Raphson and direct iteration methods are employed.…”

Section: Mathematical Modelmentioning

confidence: 99%

“…The kinetics of dynamic recrystallization and flow behavior of steels under hot forging conditions has been modeled by Bang et al [10]. Kovac et al [11] have predicted flow behavior of low carbon steels under nonisothermal conditions employing a combination of isothermal and nonisothermal interrupted tests.…”

Section: Introductionmentioning

confidence: 99%

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A mathematical model for evolution of flow stress during hot deformation

Serajzadeh

2005

Materials Letters

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Section: Mathematical Modelmentioning

confidence: 99%

Section: Mathematical Modelmentioning

confidence: 99%

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A mathematical model for evolution of flow stress during hot deformation

Serajzadeh

2005

Materials Letters

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“…Numerical simulation has become an important method to develop the roll by its easy operation and repeated testing, which provide reasonable technological parameter for real production and shorten production period. At present, numerical simulation is widely used to research the die forging, cold roll forming, and hot rolling (Ref [13][14][15], but the forging process of the HSS roll is rarely reported ever before.…”

Section: Introductionmentioning

confidence: 99%

Parameter Optimization During Forging Process of a Novel High-Speed-Steel Cold Work Roll

Guo

Liu

Sun

et al. 2015

J. of Materi Eng and Perform

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The forging of high-speed-steel (HSS) roll has always been a technical problem in manufacturing industry. In this study, the forging process of a novel HSS cold work roll was simulated by deform-3D on the basis of rigid-viscoplastic finite element model. The effect of heating temperature and forging speed on temperature and stress fields during forging process was simulated too. The results show that during forging process, the temperature of the contact region with anvils increases. The stress of the forging region increases and distributes un-uniformly, while that of the non-forging region is almost zero. With increasing forging time, Z load on anvil increases gradually. With increasing heating temperature or decreasing forging speed, the temperature of the whole billet increases, while the stress and Z load on anvil decrease. In order to ensure the high efficiency and safety of the forging process, the heating temperature and the forging speed are chosen as 1160°C and 16.667 mm/s, respectively.

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“…The first approach deals with the macro modelling of the metal forming processes regardless of metallurgical phase transitions occurring and their influences on flow behaviour, [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] while the second trend is concentrated on metallurgical phase transformations that happen in metal during or after hot deformation. [19][20][21][22][23][24][25][26] These studies have been mainly devoted to modelling the metallurgical aspect of hot deformation and development of constitutive equations. To do so, hot compression and hot torsion experiments have been extensively employed for physical modelling of hot working processes.…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical modelling of hot slab rolling

Serajzadeh¹

2005

Materials Science and Technology

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A model is developed to evaluate strain and temperature fields as well as to predict microstructural changes within the metal during a hot rolling operation. For this purpose, the governing heat conduction and energy equations are solved with the aid of a two-dimensional finite element method and Galerkin and Petrov-Galerkin techniques. Also, to consider microstructural changes such as dynamic and static recrystallisation, the Bergstrom dislocation model and Avrami's equation are coupled with the finite element model. Verification of the modelling results is performed through hot rolling experiments and microstructural studies. The comparison between the experimental and the theoretical results shows the reliability of the simulation results.

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Prediction of low carbon steels behaviour under hot rolling service conditions

Cited by 8 publications

References 14 publications

A mathematical model for evolution of flow stress during hot deformation

A mathematical model for evolution of flow stress during hot deformation

Parameter Optimization During Forging Process of a Novel High-Speed-Steel Cold Work Roll

Thermomechanical modelling of hot slab rolling

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