MicDif - Microstructure evolution in high precision strip steel during heat treatment
|Coordinator||SWERIM AB - Produktionsteknik|
|Funding from Vinnova||SEK 498 000|
|Project duration||November 2020 - October 2022|
|Venture||Research infrastructure - utilisation and collaboration|
|Call||Industrial pilot projects for utilisation of large-scale infrastructures for neutron and photon based techniques – 2020|
Purpose and goal
Heat treatment is one of the important steps in steel manufacturing which has a decisive role in the final properties of the material. As a producer of special strip steel, voestalpine Precision Strip AB has a strong interest in knowing the relationship between material microstructure and tempering operations used in their manufacturing process. Therefore, the main objective of the work is to investigate the relationship between heat-treatment and microstructure in high-performance martensitic steels using a state of the art synchrotron X-ray diffraction setup in-situ.
Expected results and effects
Results of the study expected to provide a deep understanding of the effect of tempering operation on the microstructure evolution of the martensitic stainless steel and helping voestalpine Precision Strip to optimize their manufacturing process. In addition, the microstructure of the martensitic steel is difficult to understand by conventional techniques owing to microstructural complexity and inherent limitations of lab methods. The work also expected to demonstrate the potential use of the LSI facilities for studying anisotropic and multiphase metallic materials in situ.
Planned approach and implementation
Representative martensitic stainless steel sample will be produced by voestalpine Precision Strip AB. Then, the in situ heat treatment experiment will be performed at the P07 beamline at DESY, Hamburg by Swerim and voestalpine experts together. Complimentary lab works will be performed at Swerim if necessary and all data analysis will be carried out jointly with Swerim and voestalpine. To develop LSI competence at voestalpine and disseminate the findings, a joint seminar related to the experiments will be organized, and potentially an academic publication will be produced.