Original title: Changes in structure and phase composition in the surface of tram rail
Authors: Švábenská, Eva ; Roupcová, Pavla ; Schneeweiss, Oldřich
Document type: Papers
Conference/Event: METAL 2016 - Anniversary International Conference on Metallurgy and Materials /25./, Brno (CZ), 20160525
Year: 2016
Language: eng
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: microstructure analysis; surface; tram rail
Host item entry: METAL 2016: 25th International Conference on Metallurgy and Materials, ISBN 978-80-87294-67-3

Institution: Institute of Physics of Materials AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0266067

Permalink: http://www.nusl.cz/ntk/nusl-261729


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Research > Institutes ASCR > Institute of Physics of Materials
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