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Original scientific paper

EFFECT OF CHROMIUM CONTENT ON MECHANICAL PROPERTIES OF NICKEL-FREE AUSTENITIC STAINLESS STEELS

By
Jasmin Halilović ,
Jasmin Halilović
Contact Jasmin Halilović

Faculty of Mechanical Engineering, University of Tuzla, Tuzla, Bosnia and Herzegovina

Edis Nasić ,
Edis Nasić

Faculty of Mechanical Engineering, University of Tuzla, Tuzla, Bosnia and Herzegovina

Derviš Mujagić
Derviš Mujagić

University of Zenica, Zenica, Bosnia and Herzegovina

Abstract

This study investigated the mechanical properties of a series of Fe-Cr-Mn (Mo)-N alloys. The chromium
content ranged from 16 to 18 mass%. The test alloys were produced by adding nitrided ferroalloys during
melting in an induction furnace. Test specimens of each alloy were prepared for mechanical testing and
microstructural observation. Tensile strength (TS) and elongation (EL) were determined. By increasing or
decreasing the content of the chromium, it can directly affected on the values of the mechanical properties
and the final microstructure. A series of experiments showed that increasing the chromium content by
1.46 mass% in the Fe-16Cr-8Mn (Mo)-N alloy led to a decrease in the TS value by 12% and in the EL value by
16.1%, while increasing the chromium content by 0.72 mass% in the Fe-16Cr-11Mn (Mo)-N alloy caused a
decrease in the TS value by 6.1% and in the EL value by 16%. The chromium content of 16 mass % in the
studied alloys was found to provide sufficient strength and a relatively high elongation value. The alloys
can also contain a higher mass fraction of chromium, but to obtain a complete austenitic structure it is
necessary to increase the content of manganese and nitrogen.

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Citation

Funding Statement

The research presented in this paper was financially supported by the Federal Ministry of Education and Science of Bosnia and Herzegovina (Nr. 01-3840-8/23).

Authors retain copyright. This work is licensed under a Creative Commons Attribution 4.0 International License. Creative Commons License

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