Study on Microstructure Transformation of High Strength Hot Rolled Steel by Using Finite Element Simulation

Abstract:

Advanced High-strength steels (AHSS) has widely application in automotive due to their high tensile strength and remarkable ductility. These good mechanical performances are strongly influenced by the processing and final microstructure. This paper performed Deformation Dilatometer and finite element simulation to study the effect of hot rolling parameters such as strain, cooling rate, and holding time at constant temperature on the microstructure formation of Nb-V low carbon microalloyed steel grade. It found that increasing deformation degree increased the volume fraction of ferrite, both of deformation dilatometer and finite element simulation give a similar trend of effects of hot rolling parameters on evolution of volume fraction of ferrite. These results give an insight for industrial application.

• Periodical: Materials Science Forum (Volume 1009)
• Pages: 95-100
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1009.95
• Online since: August 2020
• Authors: Siam Thongnak*, Tanongsak Yingnakorn, Loeslakkhana Sriklang, Sakhob Khumkoa
• Keywords: Advanced High Strength Steel, Finite Element Simulation, Hot Rolling of Steel, Thermomechanical Treatment Process

References

[1] Y. Doshi and S. Loomba: Advanced High-strength Steel Market by Grade (Dual Phase, Transformation-Induced Plasticity, Complex Phase, and Others) and End User (Automotive, Construction, and Others) - Global Opportunity Analysis and Industry Forecast, 2017-2023, (2018).

[2] P. Suwanpinij: Multi-Scale Modelling of Hot Rolled Dual-Phase Steels for Process Design, Dissertation, RWTH Aachen University, (2010).

[3] P. Suwanpinij, N. Togobytska, U. Prahl, W. Weiss, D. Hömberg and W. Bleck: Numerical Cooling Strategy Design for Hot Rolled Dual Phase Steel, Steel Research International, 81(11), 2010, pp.1001-1009.

DOI: 10.1002/srin.201000091

[4] R.R. Dema, R.N. Amirov and O.B. Kalugina: Determining the Parameters Effecting the Work of the Lubricants Supplying System at Wide-Strip Hot Rolling, Proceedings of the 4th International Conference on Industrial Engineering. ICIE Lecture Notes in Mechanical Engineering, Springer, Cham, (2018).

DOI: 10.1007/978-3-319-95630-5_97

[5] ‏ R.R. Dema, A.N. Shapovalov, V.V. Alontsev and O.B. Kalugina: Computer Simulation and Research of the Hot Rolling Process in DEFORM-3D, Materials Today, (2019).

DOI: 10.1016/j.matpr.2019.07.677

[6] M. Avrami: Kinetics of Phase Change I. General Theory, Journal of Chemical Physics, 7(11), 1939, pp.1103-1112.

[7] M. Avrami: Kinetics of Phase Change II. Transformation-Time Relations for Random Distribution of Nuclei, Journal of Chemical Physics, 8(2), 1940, pp.212-224.

DOI: 10.1063/1.1750631

[8] R. Jadudom: Effects of Hot Rolling Parameters on Microstructure Evolution of Dual Phase Steel, Master's Thesis, Institute of Engineering, Suranaree University of Technology, (2013).

[9] R. Jadudoma and S. Khumkoa: A Study on Phase Transformation of Hot Rolled Dual Phase Steel Using Deformation Dilatometer, International Conference on Multidisciplinary Innovation for Sustainability and Growth (MISG-2014), 27-28th August, Malaysia, (2014).

[10] P. Suwanpinij, J. Rudnizki, U. Prahl and W. Bleck: Investigation of the Effect of Deformation on γ-α Phase Transformation Kinetics in Hot-Rolled Dual Phase Steel by Phase Field Approach. Steel Research International, 80(9), 2009, pp.616-622.

DOI: 10.1002/srin.201000091