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MicDif - Microstructure evolution in high precision strip steel during heat treatment

Reference number
Coordinator SWERIM AB - Produktionsteknik
Funding from Vinnova SEK 498 000
Project duration November 2020 - October 2022
Status Ongoing
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.

The project description has been provided by the project members themselves and the text has not been looked at by our editors.

Last updated 26 November 2021

Reference number 2020-03796

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