Integration of FEM and Process Map to Determine the Formability of a Continuous Cooling Bainitic Steel

This chapter delves into the integration of Finite Element Analysis (FEA) and Process Maps to determine the formability of continuous cooling bainitic steel. It begins by introducing the unique properties of this steel, which combines strength and ductility due to its bainitic microstructure. The authors then discuss the use of Dynamic Material Modeling (DMM) to simulate material behavior under various processing conditions. A key contribution is the creation of a subroutine in QFORM UK® for implementing a virtual process map, calibrated through experimentation. The methodology involves characterizing the rheological and metallurgical behavior of the steel and performing a forgeability test using a wedge sample. The chapter highlights the use of FEA to dynamically visualize power dissipation values and unstable regions during thermal processing, facilitating the optimization of hot processing parameters. The results and discussion focus on the thermomechanical behavior of the wedge workpiece, power dissipation, and instability, showcasing the ability of FEA to predict microstructural changes and optimize steel properties.