CHANGES IN STRUCTURE AND PHASE COMPOSITION IN THE SURFACE OF TRAM RAIL

1 ŠVÁBENSKÁ Eva
Co-authors:
1 ROUPCOVÁ Pavla 1,2 SCHNEEWEISS Oldřich
Institutions:
1 Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Brno, Czech Republic, EU, svabenska@ipm.cz
2 CEITEC IPM, Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Brno, Czech Republic, EU
Conference:
25th Anniversary International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 25th - 27th 2016
Proceedings:
Proceedings 25th Anniversary International Conference on Metallurgy and Materials
Pages:
867-872
ISBN:
978-80-87294-67-3
ISSN:
2694-9296
Published:
14th December 2016
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
63 views / 22 downloads
Abstract

We have investigated structure and phase composition of surface layer of tram rails after long time running and the results were compared with those obtained on the original part of material. Changes due to effects of severe plastic deformation together with thermal shocks by friction process were expected. The information about structure and phase composition was obtained by optical and scanning electron microscopy, X-Ray Powder Diffraction, Mössbauer Spectroscopy and Glow Discharge Emission Spectroscopy (GDOES) and this was completed by microhardness measurements. The results show that the surface layer in comparison with the original material exhibits important changes in grain structure, an increase in microhardness and high content of iron oxide and hydrooxides. According to the depth profile of the chemical composition measured by GDOES there is an increase in carbon content in the surface layer which can be effect of up-hill diffusion.

Keywords: Tram rail, microstructure analysis, surface

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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