Název: Changes in structure and phase composition in the surface of tram rail
Autoři: Švábenská, Eva ; Roupcová, Pavla ; Schneeweiss, Oldřich
Typ dokumentu: Příspěvky z konference
Konference/Akce: METAL 2016 - Anniversary International Conference on Metallurgy and Materials /25./, Brno (CZ), 20160525
Rok: 2016
Jazyk: eng
Abstrakt: 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.
Klíčová slova: microstructure analysis; surface; tram rail
Zdrojový dokument: METAL 2016: 25th International Conference on Metallurgy and Materials, ISBN 978-80-87294-67-3

Instituce: Ústav fyziky materiálů AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0266067

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-261729


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav fyziky materiálů
Konferenční materiály > Příspěvky z konference