Modelling the mechanical properties of multiphase steels
Corinna Thomser1, Ulrich Prahl1, Henk Vegter2, Wolfgang Bleck1
1Institute of Ferrous Metallurgy, RWTH Aachen University, Germany. 2Corus RD&T, IJmuiden, Netherlands.
DOI:
https://doi.org/10.7494/cmms.2007.1.0118
Abstract:
Due to economic, environmental and safety reasons the use of high strength steels for the automotive industry is increasing rapidly. For an optimal combination of strength and formability of multiphase steels an accurate material model is required for forming simulations. Currently, the microstructure of multiphase steels is not taken into account in FE simulations of forming processes which is the most important factor influencing the strain hardening behaviour of multiphase steels. Within this work, an approach is presented which describes the microstructure evolution during intercritical annealing by thermodynamic calculations and predicts the strain hardening behaviour of dual phase steels by means of FE simulation of Representative Volume Elements based on microstructural characterisations. The calculated strain hardening behaviour will be used for the FE simulation of real forming operations.
Cite as:
Thomser, C., Prahl, U., Vegter, H., & Bleck, W. (2007). Modelling the mechanical properties of multiphase steels. Computer Methods in Materials Science, 7(1), 42 – 46. https://doi.org/10.7494/cmms.2007.1.0118
Article (PDF):
Keywords:
Dual phase steel, Mechanical properties, FE simulation, Representative volume element, Modelling, Intercritical annealing, Microstructure, Multiphase steels
References: