Materials and Mechanical Engineering - Modeling team

Our modeling team focuses heavily on steel research, with a wide variety of production processes, including:

  • Roughing,
  • Hot strip rolling,
  • Accelerated water cooling on a run-out table,
  • Coil cooling,
  • Welding,
  • Squaring

as well as various important metallurgical phenomena occurring in these processes. The metallurgists working with our group provide valuable insight into these phenomena as well as crucial experimental data, which is used both for fitting the simulation models and verifying simulation results.

The following simulation methods are used to model multi-physical and multi-scale phenomena occurring during steel production:

  • FEM,
  • CA,
  • FD

Here are a few demo videos show-casing our simulation models:

CA-phase transformation model
The Cellular Automata (CA) -model for phase transformation is a graphical simulation method, where austenite decomposition is applied directly into a microstructural image by inserting ferritic nuclei in favorable locations and allowing them to grow according to user-defined rules. These rules are designed to imitate experimentally observed growth as well as growth depicted by well-founded theories. The model has been published in 2018 and can be found in https://doi.org/10.1016/j.promfg.2018.07.204.

Currently the model is used to simulate bainite as well as martensite, both of which have directional growth patterns that can be described quite nicely with vectorized growth. In the below videos cooling rates and material compositions have been chosen so that in the first video only martensitic growth occurs and in the second video both martensitic and bainitic growth occurs.

Martensitic growth:



Martensitic+Bainitic growth:


 

Last updated: 9.9.2019