Title of article
Nanostructure formation on the surface of railway tracks
Author/Authors
Lojkowski، نويسنده , , W. and Djahanbakhsh، نويسنده , , M. B. Burkle Bonecchi، نويسنده , , G. and Gierlotka، نويسنده , , S. and Zielinski، نويسنده , , W. and Fecht، نويسنده , , H.-J.، نويسنده ,
Pages
12
From page
197
To page
208
Abstract
The microstructure of the surface layer of railway tracks is investigated. It is shown that the surface layer of the rail transforms during exploitation into a nanocrystalline Fe–C alloy. The mechanism of the nanostructure formation is discussed. It is shown that the transformation of pearlite to the nanostructured Fe–C alloy layer is caused by the heavy plastic deformation at the wheel–rail contact zone. The transformation of the microstructure of the surface may take place at rail–wheel contact temperatures less than 230°C and its mechanism is similar to that taking place during mechanical alloying.
Keywords
Nanostructure , Grain boundary diffusion , Railway tracks , White etching layer , mechanical properties
Journal title
Astroparticle Physics
Record number
2058010
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