Responsibilities and tasks
The long-term goal is to develop a material model suitable for process simulation of metal forming. During metal forming involving several strain paths the material exhibits sudden stress jumps or stress transients, which often lead to early fracture. The origin of this behaviour is changes in the microstructure of the metal, which are at present not fully understood. A collaboration between scientists at DTU and University of Illinois, USA, aims at formulating a new microstructure based material model for this mechanical behaviour. Two fully financed PhD projects are offered.
Main tasks of PhD Project 1:
- Design and analysis of mechanical tests to characterise the mechanical response of single and polycrystals to strain path changes
- Crystal plasticity modelling relating microstructural and mechanical changes
- Probing the microstructure of individual grains during mechanical testing by three-dimensional X-ray diffraction using synchrotron radiation (experiment and data analysis)
- Crystal plasticity modelling focusing on the interaction between grains
