Modelling of diffusionless phase transitions in crystalline materials

  • Type:Bachelor or Master Thesis
  • Date:Start negotiable
  • Supervision:

    Prof. Thomas Böhlke
    Claudius Klein (M.Sc.)

  • Graduand/Requirements:

    Methodological focus: theory and numerics
    Specialisation in mechanics desired

  • Contact:

    M.Sc. Claudius Klein

  • Topic Description:
     

    Diffusionless phase transformations can be used in a variety of technical applications. For example, in shape memory alloys (austenite→martensite transformation) or to simultaneously increase the strength and ductility of steels (in TRIP steels through austenite→martensite transformation or in TWIP steels through twin formation).

    Very high strain rates occur during the phase transformation itself, which makes micromechanical modelling for general load cases challenging. The influence of the phase transformation on the macroscopic behaviour is to be investigated using a multi-scale modelling approach.


    The following subtasks are part of the work:
    - Familiarisation with diffusionless phase transformation for thermomechanical materials
    - Creation of a material model for modelling diffusionless phase transformations
    - Documentation of the results