SELECTED PROPERTIES OF HIGH STRENGTH MANGANESE STEELS

1 MAZANCOVÁ Eva
Co-authors:
2 KUČERA Pavel
Institutions:
1 VŠB-Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Tř. 17. listopadu 15/ 2172, 708 33 Ostrava, Czech Republic, EU, eva.mazancova@vsb.cz
2 Vítkovice Cylinders a.s., Ruská 24/83, 706 00 Ostrava-Vítkovice, Czech Republic, EU, pavel.kucera@vitkovice.cz
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
789-794
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
14 views / 4 downloads
Abstract

Work is aimed at three laboratory manufactured high strength manganese steels after cast, rolling and aging process (at 500 °C after 6, 12, 30 and/or 60 minutes of dwell). Micro-hardnesses (HV0.2) as well as potential k-carbides formation of micro- and/or nano-size and microstructures characters of all treatment modes are mutually compared. Revealed disproportions are explained by differences in chemical composition and in finishing hot rolling temperature leading to undesirable coarser k-carbides formation on the austenite-austenite, resp. austenite-ferite interphase. Simultaneously, changes in selected thermos-physical parameters both after hot rolling and after subsequent aging (560 °C / 6 minutes) were studied. Between micro-hardness and those thermos-physical parameters some proportionality was observed.

Keywords: high strength manganese steel, micro-hardness, k-carbides, microstructure, thermo-physical parameter
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