A Microstructure Based Model for the Mechanical Behavior of Multiphase Steels

Abstract:

Multiscale tools are important for the development of multiphase steel grades within Tata Steel R&D. The spatial distribution and morphology of the hard and soft phases in the microstructure as well as their micromechanical properties influences strongly the macroscopic behaviour. To be able to predict the macroscopic response and be of use in an industrial research environment accurate modelling on microscale has to be coupled to efficient homogenization principles. A new algorithm, which extends the capabilities of voronoi tessellations has been developed capturing relevant microstructure parameters. In this paper we show the versatility of the algorithm in simulating many microstructure features in 2 and 3 dimensions and how it is used for micromechanical simulations.

• Periodical: Key Engineering Materials (Volumes 651-653)
• Pages: 975-980
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.651-653.975
• Online since: July 2015
• Authors: P.J.J. Kok*, W. Spanjer, Henk Vegter
• Keywords: Crystal Plasticity, Finite Elements, Microstructure, Multi Phase, Multi Scale, Voronoi

References

[1] S. Yadegari, S. Turteltaub, A.S.J. Suiker and P.J.J. Kok, Analysis of banded microstructures in multiphase steels assisted by transformation-induced plasticity, Comp. Mat. Science 84 (2014) 339-349.

DOI: 10.1016/j.commatsci.2013.12.002

[2] S.M.T. Mousavi, B. Hosseinkhani, C. Vieillard, M. Chambart, P.J.J. Kok and J.F. Molinari, On the influence of transgranular and intergranular failure mechanisms during dynamic loading of silicon nitride, Acta Materialia 67 (2014) 239-251.

DOI: 10.1016/j.actamat.2013.12.032

[3] A. Okabe, B. Boots, K. Sugihara and S.N. Chiu, Spatial Tessellations, second ed., Wiley, Chichester, (2000).

[4] C. Geuzaine, J.F. Remacle, Gmsh: a three-dimensional finite element mesh generator with built-in pre- and post-processing facilities, Int. Journal for Numerical Methods in Engineering 79, issue 11 (2009) 1309-1331.

DOI: 10.1002/nme.2579

[5] P. Eisenlohr, M. Diehl, R.A. Lebensohn and F. Roters, A spectral solution method to crystal elasto-viscoplasticity at finite strains, Comp. Mat. Science 46 (20?) 37-53.

DOI: 10.1016/j.ijplas.2012.09.012

[6] R. Smit, Toughness of heterogeneous polymeric systems, PhD. Thesis Technical University of Eindhoven (1998).

[7] R.G. Kouznetsova, Computational homogenization for the multi-scale analysis of multi-phase materials, PhD. Thesis Technical University of Eindhoven (2002).