Peter Hedström

This PhD position at KTH Royal Institute of Technology focuses on the advanced characterisation and modelling of tungsten, a material critical for industries requiring resistance to extreme heat, pressure, and corrosion. Despite its exceptional properties, tungsten's brittleness and high melting point limit its processability. The ElectronsMatter network, supported by the Marie Skłodowska-Curie Actions programme, aims to overcome these challenges using electron beam powder bed fusion, an innovative additive manufacturing technique. The project integrates modelling, process optimisation, and advanced materials characterisation to develop crack-free tungsten components. Two main research tracks are available: microstructure modelling and advanced materials characterisation. The microstructure modelling project involves developing thermodynamic and kinetic models for tungsten and its alloys, integrating these into microstructure models to predict phase transformations and grain structure during additive manufacturing. This work is closely coordinated with experimental researchers to validate models and contribute to the development of robust tungsten components. The advanced materials characterisation project focuses on atomic-level analysis of tungsten and its alloys using techniques such as atom probe tomography (APT) and electron-ion microscopy. The goal is to understand the effects of trace and alloying elements on microstructure and properties, with experimental data feeding back into the modelling efforts. Supervision will be provided by Dr. Greta Lindwall and Dr. Peter Hedström. The position offers a dynamic, international research environment with collaboration opportunities across academia, research institutes, and industry as part of the ElectronsMatter network. The role includes research secondments at partner universities and industry, as well as participation in joint doctoral courses and training schools. The position is fully funded, with a monthly salary according to KTH’s doctoral student salary agreement (starting at 33,000 SEK/month, approx. 2950 EUR), and includes additional Marie Curie mobility and possible family allowances. Applicants must have a Master’s degree in Materials Science or a related field, or equivalent qualifications, and must not have resided or conducted their main activity in Sweden for more than 12 months in the 3 years prior to recruitment (Marie Curie mobility rule). Proficiency in English equivalent to English B/6 is required. Selection is based on academic qualifications, ability to work independently and collaboratively, professional approach, and analytical skills. The position is based in Stockholm, Sweden, and offers a supportive work and study environment, with guidance on relocation and settling in Sweden. Applications must be submitted through KTH’s recruitment system by December 1, 2025, and should include a CV, application letter, certified copies of diplomas and grades, proof of English proficiency, and representative publications or technical reports.