The Solid State Materials Processing department of the Institute of Materials Mechanics, at the Helmholtz-Zentrum Geesthacht is looking for three PhD students (m/f/d), possible starting date after June 1st, 2021, initially limited to 3 years, within the ERC Consolidator Grant "Modelling Assisted Solid State Materials Development and Additive Manufacturing". The first PhD position is experimental oriented with the focus to produce and process novel value-added Al-based materials with the friction extrusion process (FEP). The second PhD position is modelling oriented with a strong experimental component, focused on establishing a throughout thermodynamic description of the phase formations during the process. The third PhD position is mainly modelling oriented focusing on the development of a micromechanical model to describe the microstructure evolution during FEP.