University of Oulu

O Seppälä et al 2022 IOP Conf. Ser.: Mater. Sci. Eng. 1270 012077

Analysis of grain size distribution evolution of steel during recrystallization and grain growth

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Author: Seppälä, Oskari1; Pohjonen, Aarne1; Ali, Mohammed1,2;
Organizations: 1Materials and Mechanical Engineering, Oulu University, Oulu, 90014, Finland
2Steel Technology Department, Central Metallurgical Research and Development Institute, Helwan 11421, Cairo, Egypt
3Process Metallurgy Research Unit, Oulu University, 90014 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.9 MB)
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Language: English
Published: IOP Publishing, 2022
Publish Date: 2023-01-18


Controlling the hot rolling process requires a deep understanding of the underlying metallurgical phenomena. Quantitative methods are of paramount importance for achieving the capability of controlling microstructural evolution. Since the final mechanical properties of steel result from microstructural evolution in the whole process, analysis of the microstructure provides an important input for numerical simulations that can be used for tailoring the mechanical properties of steel. The evolution of grain size distribution of a low-carbon CrNiMnB ultrahigh-steel in austenitic state is studied in hot forming and annealing using experimental data obtained with the Gleeble 3800 thermo-mechanical simulator. A general method is described that can be utilized to systematically compare the grain size distributions obtained from the experimental studies. The experimental data has been obtained from laser scanning confocal microscopy images using the mean linear intercept method. A custom-made semi-automatic software has been utilized to process the data rapidly and reliably.

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Series: IOP conference series. Materials science and engineering
ISSN: 1757-8981
ISSN-E: 1757-899X
ISSN-L: 1757-8981
Volume: 1270
Article number: 012077
DOI: 10.1088/1757-899x/1270/1/012077
Host publication: The 19th International Conference on Metal Forming (MF 2022) 11/09/2022 - 14/09/2022 Online
Conference: International Conference on Metal Forming
Type of Publication: A4 Article in conference proceedings
Field of Science: 216 Materials engineering
Funding: The work of Mohammed Ali was conducted within the framework of the AMET project funded by Business Finland. Financial assistance of Business Finland, project FOSSA- Fossil-Free Steel Applications, is acknowledged.
Copyright information: Published under licence by IOP Publishing Ltd. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.