Metall. Res. Technol.
Volume 114, Number 6, 2017
|Number of page(s)||9|
|Published online||06 October 2017|
Deformation behavior of MnO13%-Al2O318%-SiO269% inclusion in different steels during hot rolling processes
State Key Laboratory of Advanced Metallury, University of Science and Technology Beijing,
100083, PR China
2 College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063299, PR China
* Corresponding author: firstname.lastname@example.org
Received in final form: 23 May 2017
Accepted: 18 July 2017
To investigate the influence of steel properties on the deformation behavior of MnO13%-Al2O318%-SiO269% inclusions during hot rolling processes. The deformation of inclusions with rolling temperatures (800, 850, 900, 925, 950 and 1000 °C) in three steels (A, B, C) have been simulated with a finite element method. The equivalent plastic strain distributions and the shapes of inclusions after rolling are obtained by the model. The influences of rolling temperatures, flow stress of steel, reduction, etc., on the voids length and the deformation degree of inclusions are discussed. We note that 900, 925 and 950 °C are the critical temperatures of the inclusion deformations in steel A, B and C, respectively. No voids occur above the critical temperature. Voids form between the matrix and inclusions below the critical temperature. And the lower rolling temperature leads to the longer length of voids and the smaller deformation of inclusions. The mechanism of voids formation is also analyzed. Experiments on the slab deformations using a titanium ball instead of the inclusion inside the slab at 950 °C during hot rolling processes are conducted. The simulated shapes of the inclusions mostly agree with the experimental results.
Key words: deformation / inclusion / void / rolling temperature / flow stress
© EDP Sciences, 2017
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