Third-cycle subject: Engineering Materials Science
Cemented carbide tools are essential to Sweden’s manufacturing, construction, and mining industries due to their exceptional hardness and wear resistance. At the same time, the supply of virgin tungsten (W) and cobalt (Co) is uncertain, and only about 10% of today’s cemented carbide tools are produced from recycled material. Increasing recycling is therefore crucial for reducing energy use, climate impact, and dependence on critical raw materials.
The aim of the PhD project is to contribute to a mechanistic understanding of how recycled raw materials influence the microstructure and performance of cemented carbides in demanding applications, primarily metal cutting but also rock excavation. Recycled raw material often contains impurities which can affect the final properties of the product. The work builds on a pre-study in which real‑time characterization under simulated loading conditions showed strong potential for explaining how impurities and microstructure govern material behaviour.
The project will be carried out within the CHARM project funded by Vinnova and involves close collaboration with leading industrial partners (Sandvik Coromant, Seco Tools, Sandvik Mining) as well as researchers at KTH and Lund University. It is also linked to Vinnova’s competence centre NEXT and European networks such as AIM‑NEXT and RESQTOOL. The work includes development of new characterization methods, analysis of microstructure–property relationships, and knowledge‑based optimization of recycled cemented carbides.
The overall goal is to enable high‑performance tools based on recycled materials, thereby strengthening sustainability, competitiveness, and raw‑material security for Swedish and European industry.
Supervision: Peter Hedström and Lisa Toller Nordström are proposed to supervise the doctoral student. Decisions are made on admission
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| Type of employment | Temporary position |
|---|---|
| Contract type | Full time |
| First day of employment | According to agreement |
| Salary | Monthly salary according to KTH's doctoral student salary agreement |
| Number of positions | 1 |
| Full-time equivalent | 100% |
| City | Stockholm |
| County | Stockholms län |
| Country | Sweden |
| Reference number | PA-2026-0330 |
| Contact |
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| Published | 12.Feb.2026 |
| Last application date | 05.Mar.2026 |