INFLUENCE OF C CONTENT AND ANNEALING TEMPERATURE ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF DOUBLE ANNEALED MEDIUM MN STEELS.

1 ARLAZAROV Artem
Co-authors:
1 KEGEL Frederic 1 KENNEL Nicolas
Institution:
1 ArcelorMittal Maizieres Research and Development, Maizières-lès-Metz Cédex, France, EU, artem.arlazarov@arcelormittal.com, frederic.kegel@arcelormittal.com, nicolas.kennel@arcelormittal.com
Conference:
33rd International Conference on Metallurgy and Materials, Orea Congress Hotel Brno, Czech Republic, EU, May 22 - 24, 2024
Proceedings:
Proceedings 33rd International Conference on Metallurgy and Materials
Pages:
119-124
ISBN:
978-80-88365-21-1
ISSN:
2694-9296
Published:
26th June 2024
Proceedings of the conference have been sent to Web of Science and Scopus for evaluation and potential indexing.
Metrics:
58 views / 54 downloads
Abstract

<div>The effect of holding temperature on the microstructure and mechanical properties evolution of double annealed medium Mn steels with two different C level was studied. Samples were annealed at various intercritical temperatures using gradient batch annealing furnace after preliminary austenitization and quench. Mechanical properties were measured using a standard tensile test. Microstructure observations were performed and retained austenite fraction was measured using the X-ray diffraction. Curious effect of C content on the RA fraction and strength-ductility balance was observed and explained. The influence of holding temperature on the microstructure was more classical, but the resulting RA fractions and associated mechanical behavior were appealing. The questions about these relationships were addressed and certain explanations were proposed.</div>

Keywords: medium Mn steel, double annealing, C effect, retained austenite, mechanical properties,

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