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