MECHANICAL PROPERTIES OF HIGH NITROGEN 16CR - 2NI - MN - MO - N STAINLESS STEEL SYNTHESIZED BY MECHANICAL ALLOYING AND SPARK PLASMA SINTERING

1 MAKHMUTOV Tagir
Co-authors:
1 RAZUMOV Nikola 1 POPOVICH Anatoliy 1 GYULIKHANDANOV Evgeniy 1 KIM Artem 1 SHAMSHURIN Alexey
Institution:
1 Peter the Great St, Petersburg Polytechnic University, St. Petersburg, Russian Federation, mahmutovtagir@mail.ru
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
752-757
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
26 views / 10 downloads
Abstract

16Cr - 2Ni - Mn- Mo - xN (wt.%) stainless steel powders were synthesized by mechanical alloying (MA) of elemental powders and nitrogen-containing ferrochrome (FeCrN) powders alloy. Compaction of resulting powders was carried out using spark plasma sintering (SPS) technology.The microstructural and phase evolution of the powders at different times of alloying, microstructure, phase composition and mechanical properties after SPS were studied. The X-Ray diffraction (XRD) and Scanning Electron Microscopy (SEM) analysis showed that increasing alloying time up to 30 ks improves chemical homogeneity of the powders and promotes the formation of α-phase solid solution for the sample without nitrogen source and incomplete dissolution of FeCrN on the α-phase solid solution for the sample with a nitrogen source. The XRD and SEM analysis of sintering samples showed the formation of α and γ-phase solid solution. Tensile and microhardness tests showed increasing of tensile stress and increasing hardness for the sample with a nitrogen source.

Keywords: High nitrogen stainless steels, mechanical properties, mechanical alloying, microstructure, phase evolution
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