Multiscale Model of Shape Rolling Taking into Account the Microstructure Evolution – Finite Element Modeling

Abstract:

The use of appropriate forming processes allows to obtain materials of required quality, which are fulfill different technological criteria. The basic type of properties, which are fundamental for material use in specific operating conditions, are mechanical ones. They directly depend on the microstructure. Model of microstructure evolution allows for multi-criteria optimization of technological processes in view of final product properties, taking into account technological conditions. The objective of this study is development a multiscale model of microstructure evolution during the shape rolling process and presentation the finite element modeling results for 5 mm round bars rolled in diamond, oval and round grooves. The model allows to obtain parameters of technological process (by means of finite element model - FEM) and microstructural parameters (with use cellular automata - CA). FEM is used for design and selection of the grooves on the first stage [1] and for the simulations of shape rolling process in macro scale on the second stage. The next stage includes the use of FEM modeling results for simulation of microstructure evolution by cellular automata. The article presents the simulation results of shape rolling (5 mm round bars in diamond - oval scheme) with used the finite element method. This stage is the second one in the calculation sequence of the developed multiscale model. The basic process parameters such as temperature, components of strain and strain rate tensors and strain rate intensity at arbitrary points of deformed material are the modeling results. Selected FEM simulation results are presented in the article.

• Periodical: Advanced Materials Research (Volumes 1025-1026)
• Pages: 379-384
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1025-1026.379
• Online since: September 2014
• Authors: Łukasz Łach*, Dmytro Svyetlichnyy
• Keywords: Finite Element Method (FEM), Multiscale Modeling, Shape Rolling

References

[1] Ł. Łach and D. Svyetlichnyy: Adv. Mater. Res. Vol. 871 (2014), p.263.

[2] I. Steinbach: Model. Simul. Mater. Sci. Eng Vol. 17 (2009), p.1.

[3] M. Bernacki, R.E. Logé and T. Coupez: Scr. Mater Vol. 64 (2011), p.525.

[4] K. Nakashima, T. Nagai and K. Kawasaki: J. Stat. Phys Vol. 57 (1989), p.759.

[5] D.S. Svyetlichnyy: Comp. Mater. Sci. Vol. 60 (2012), p.153.

[6] D.S. Svyetlichnyy: Comp. Mater. Sci. Vol. 77 (2013), p.408.

[7] D.S. Svyetlichnyy: ISIJ Int. Vol. 52 (2012), p.559.

[8] D.S. Svyetlichnyy: ISIJ Int. Vol. 54 (2014), p.1386.

[9] D.S. Svyetlichnyy, J. Nowak and Ł. Łach: Lect. Not. Comp. Sci Vol. 47 (2012), p.494.

[10] D. Svyetlichnyy, J. Majta, K. Muszka and Ł. Łach: AIP Conf. Proc Vol. 1315 (2010), p.1473.

[11] Ł. Łach and D. Svyetlichnyy: Key Eng. Mater Vol. 504–506 (2012), p.187.

[12] D.S. Svyetlichnyy and Łach Ł.: Steel Res. Int. Vol. spec. ed. (2012), p.1151.

[13] H.W. Lee: PhD thesis School of Mechanical, Aerospace and Systems Engineering, Daejeon, (2010).

[14] Ł. Łach and D. Svyetlichnyy: submitted to Materials Research Innovations (2013).

[15] Ł. Łach and D. Svyetlichnyy: submitted to Advanced Materials Research (2014).