{"id":3001770,"url":"https://alion.io/job/scania-master-thesis-student-processing-microstructure-relationships-in-developed-low-alloy-steels","title":"Master Thesis Student: Processing-Microstructure Relationships in Developed Low-Alloy Steels","company":{"id":445730,"name":"Scania","domain":"scania.com","url":"https://alion.io/company/scania-4","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Career sitemap","truth_index":{"grade":"A","score":100,"open_postings":17,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":18,"computed_at":"2026-11-01T06:10:25Z"}},"role":"Early Careers","role_family":"Early Careers","seniority":null,"employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Södertälje, Sweden"],"countries":["SE"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Electron Microscopy (SEM/TEM)","optional":false}],"status":"live","first_seen_at":"2026-10-21T12:23:32Z","employer_posted_date":"2026-10-21","last_verified_at":"2026-11-01T23:01:54Z","board_verified":true,"closed_at":null,"days_open":11,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":11},"description":"30 hp - Microstructure Relationships in Developed Low-Alloy Steels\nIntroduction\nThesiswork is an excellent way to get closer to Tratonand build relationships for the future. Many of today's employees began their Tratoncareer with their degree project.\nBackground\nThe development of advanced steels for automotive applications requires careful control of microstructure throughout manufacturing and heat-treatment processes. In particular, controlling austenite grain growth during high-temperature heat treatment is important for achieving the desired final material properties.\nAustenite grain growth is strongly influenced by the presence, size, distribution, and stability of precipitates. Fine precipitates such as AlN, Nb(C,N), and V(C,N) can inhibit grain-boundary movement through the Zener pinning effect. However, the precipitate state is itself affected by the steel composition, heat-treatment conditions, and previous thermomechanical processing history. Understanding these relationships is therefore important for controlling grain growth in newly developed low-alloy steels.\nObjective\nThe main objective is to determine how steel composition and processing history influence precipitate characteristics and, consequently, the resistance of austenite grains to growth during the final high-temperature heat treatment. Particular attention will be given to identifying which combinations of steel composition and processing history provide the greatest resistance to grain growth and to understanding the underlying mechanisms responsible for the observed differences.\nJob description\nThis master's thesis investigates the relationship between processing history, precipitate evolution, and austenite grain growth in five model alloys designed to investigate low-alloy steels for automotive applications.\nEach steel has been processed using two different rolling routes, resulting in ten different initial material conditions. These materials will subsequently undergo controlled thermal cycles with different cooling rates using dilatometry. The aim is to generate different precipitate states and initial austenite grain structures before subjecting the materials to final heat treatments in the temperature range of 1000-1100 °C, followed by rapid cooling.\nThe microstructure will be characterized using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS), supported by thermodynamic calculations using the Thermo-Calc Software package. Electron backscatter diffraction (EBSD) will be used to investigate austenite grain size and grain-size distributions, as well as relevant grain-boundary characteristics, crystallographic texture, kernel average misorientation (KAM), and phase information.\nIf required and feasible within the project timeframe, extraction replicas will be used to characterize precipitates that are too small to be reliably resolved using SEM.\nEducation/program/focus\nIndicate education, program,or focus:\nMaster’s student in Materials Science and Engineering, Metallurgical Engineering, with an interest in physical metallurgy, steel development, and microstructural characterization.\nRelevant focus areas include:\nPhysical metallurgy and phase transformations\n\nSteel metallurgy and heat treatment\n\nMicrostructure characterization (SEM/EDS, EBSD)\n\nThermodynamics and computational materials science\n\nThermomechanical processing and grain growth\n\nNumber of students:one\nStart date for the thesis work: Jan 2027.\nEstimated time required:20W.\nContact persons and supervisors\nRoonak Khamooshian, development engineer and industrial PhD Student, +46 8 553 83393, \nApplication:\nYour application must include a CV, personal letter,and transcript of grades\nA background check might be conducted for this position. 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