Project Title: Multi-scale modelling of high-temperature deformation mechanisms in Co-Al-W-based superalloys
Supervisors: Dr. Vassili Vorontsov, Prof. Peter Haynes & Prof. David Dye
Since their discovery nearly ten years ago, Co-Al-W-based superalloys have emerged as the frontrunner materials to replace the ubiquitous Ni-based superalloys used in gas turbines. The modelling of deformation mechanisms in these alloys is of paramount importance for accelerating the identification of optimal alloy compositions, saving both time and money during the development process.
The dynamics of dislocations within these superalloys and the effects of diffusion will be studied using the Phase Field Model for Dislocations. Prior to this, a Generalised Stacking Fault Energy Surface will need to be calculated, as an input, at a much smaller length scale using Density Functional Theory.
The aim of the project is to characterize the effect of composition on the mechanical deformation of Co-Al-W-based superalloys using the above models.